Unity游戏开发

“Work Smarter”

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1.快速搭建

在全局下安装express

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npm install -g express

执行
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express -v yourProject 	
或者
cd yourProject
express

就会快速在目录yourProject中搭建express，-v参数指定模板引擎，没写就默认为jade

2.express中间件

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var app = requrie('express')();
app.use (function (req, res, next) {
    ...
    next()
})

next()作用是交付控制权，前往下一个中间件
可以利用这一点做验证功能

3.MVC架构

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/app
    /controllers
    /models
    /schemas
    /views
/public
    /libs
    /css
    /js
/router
    router.js
app.js
package.json
.bowerrc
bower.json
gruntfile.js
.gitignore

以上就是项目的架构，按照MVC架构，后台代码都放在app下，schemas存放mongodb的模式，可以看作是一张张表，models放生成模型的文件，模型与模式对接起来。public存放静态文件，/libs存放前端框架如bootstrap。把router路由模块抽离放在router目录。
bower模块用来安装项目依赖的前端框架。需要在全局安装bower

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npm install -g bower

安装bootstrap
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bower init
bower install bootstrap

bower init 生成bower.json
然后安装bootstrap时，会根据.bowerrc文件
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{
    "directory": "public/libs"
}

把依赖的框架安装在public/libs下

4.项目管理工具grunt

gruntfile.js

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module.exports = function(grunt) {

    grunt.initConfig({
        watch: {
            jade: {
                files: ['views/**'],
                options: {
                    livereload: true
                }
            },
            js: {
                files: ['public/js/**', 'app/**/*.js'],
                //tasks: ['jshint'],
                options: {
                    livereload: true
                }
            },
            uglify: {
                files: ['public/**/*.js'],
                tasks: ['jshint'],
                options: {
                    livereload: true
                }
            },
            styles: {
                files: ['public/**/*.less'],
                tasks: ['less'],
                options: {
                    nospawn: true
                }
            }
        },

        nodemon: {
            dev: {
                script: 'bin/www',  //入口文件
                options: {
                    nodeArgs: ['--debug'], //开启开发模式
                    args:　[],
                    ignoredFiles: ['README.md', 'node_modules/**', 'public/libs/**', '.vscode'],
                    watchedExtensions: ['js'],
                    watchedFolders: ['./'], //监听定义的文件夹,根目录
                    debug: true,
                    delayTime: 1000,
                    env: {
                        PORT: 3000
                    },
                    cwd: __dirname
                }
            }
        },

        jshint: {
            options: {
                jshintrc: '.jshintrc',
                ignores: ['public/libs/**/*.js']
            },
            all: ['public/javascripts/*.js', 'test/**/*.js', 'app/**/*.js']
        },

        less: {
            development: {
                options: {
                    compress: true,
                    yuicompress: true,
                    optimization: 2
                },
                files: {
                    'public/build/index.css' : 'public/less/index.less'
                }
            }
        },

        uglify: {
            development: {
                files: {
                'public/build/admin.min.js': 'public/javascripts/admin.js',
                'public/build/detail.min.js': [
                    'public/javascripts/detail.js'
                ]
                }
            }
        },

        mochaTest: {
            options: {
                reporter: 'spec'
            },
            src: ['test/**/*.js']
        },

        concurrent: {
            tasks: ['nodemon', 'watch', 'jshint', 'less', 'uglify'],
            options: {
                logConcurrentOutput: true
            }
        }
    });

    grunt.loadNpmTasks('grunt-contrib-watch'); //监控定义好的静态文件变动
    grunt.loadNpmTasks('grunt-nodemon'); //监控入口文件变动
    grunt.loadNpmTasks('grunt-concurrent'); //优化慢任务的构建时间，比如sass,less，并发执行多个阻塞的任务,比如nodemon和watch
    grunt.loadNpmTasks('grunt-mocha-test');  //测试框架
    grunt.loadNpmTasks('grunt-contrib-less');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-contrib-jshint');

    grunt.option('force', true); //避免程序因语法错误而终止执行

    grunt.registerTask('default', ['concurrent']);
    grunt.registerTask('test', ['mochaTest']);
}

前期开发只需要前面三个模块包即watch,nodemon,concurrent就行。

5.router模块

这里有两种方法
第一种是将路由分类

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app.js
//挂载路由表
app.use('/', index);
app.use('/admin', admin);
app.use('/user', user)

user.js
var express = require('express');
var User = require('../models/user');
var router = express.Router();

//用户注册
router.post('/signup', function(req, res) {
    ...
}
module.exports = router;

当url以/user开头时就会进入user.js文件。
第二种是路由全部写在一个文件
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app.js
require('./config/routers')(app); //不能传入express.Router(),它只能作为中间件用,如上

router.js
var Movie = require('../app/controllers/movie');
var Index = require('../app/controllers/index')


module.exports = function(app) {

    //Index
    app.get('/', Index.index);

    //Movie
    app.get('/movie/:id', Movie.detail);
    app.get('/admin/movie/list',User.signinRequired,User.adminRequired, Movie.list);
    
};

6.数据库模块mongose

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app.js
var mongoose = require('mongoose');
var dbURL = 'mongodb://localhost:27017/movieWeb';

//连接数据库
mongoose.Promise = global.Promise; //避免控制台输出Promise错误 
mongoose.connect(dbURL) //数据库名为movieWeb
mongoose.connection.on('connected', function () {    //绑定connected函数，连接成功时触发
  console.log('Connection success!');
});

模式schemas(表)

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var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var ObjectId = Schema.Types.ObjectId;

var MovieSchema = new mongoose.Schema({  //定义模式
    doctor: String,
    title: String,
    language: String,
    country: String,
    summary: String,
    flash: String,
    poster: String,
    year: String,
    pv: {
        type: Number,
        default: 0
    },
    category: {
        type: ObjectId,
        ref: 'Category'
    },
    meta: {
        createAt: {
            type: Date,
            default: Date.now()
        },
        updateAt: {
            type: Date,
            default: Date.now()
        }
    }
})

//每次存取数据之前，都调用save方法
MovieSchema.pre('save', function(next){
    if(this.isNew) {
        this.meta.createAt = this.meta.updateAt = Date.now()
    } else {
        this.meta.updateAt = Date.now()  
    }

    next() //将流程走下去
})

MovieSchema.statics = {  //实例化以后就会具有以下方法，相当于构造函数的成员方法
    fetch: function(cb) {
        return this
            .find({})
            .sort('meta.updateAt')
            .exec(cb)
    },
    fetchById: function(id, cb) {
        return this
            .findOne({_id: id})
            .exec(cb)
    }
}

module.exports = MovieSchema

模型models（模式跟模型对接）
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var mongoose = require('mongoose')
var MovieSchema = require('../schemas/movie')
var Movie = mongoose.model('Movie', MovieSchema)  //模式和模型对接

module.exports = Movie


值得注意的是，使用mongodb之前，需要在电脑上安装mongodb，并注册成一个服务，方便使用前开启，具体参考笔记：mongodb错误

7.将session存放在mongodb里

session是会话支持，作为客户端的id，跟服务器交互

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//使用mongodb来储存sesion信息
var cookieParser = require('cookie-parser');
var session = require("express-session");
var MongoStore = require('connect-mongo')(session);

//配置session
app.use(cookieParser());
app.use(session({
  secret: 'imoocMovieWeb',
  store: new MongoStore({
    url: dbURL,
    collection: 'sessions'
  }),
  resave: true,
  saveUninitialized: true
}))

其中呢，cookieParser()中间件是session和bodyParser的依赖的中间件
bodyParser是解析request请求的中间价
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配置
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended:true})); //extended为true则可以解析字符串和数组以外的数据

8.前后台传数据

可以用res.render方法

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controllers/movie.js

//获取后列表页
exports.list = function(req, res, next) {
  Movie.fetch(function(err, movies) {
    if(err) {
      console.log(err)
    }

    res.render('list', {
      title: '后台列表页',
      movies: movies
    });
  })
};

还可以用res.locals，可以传递方法和变量
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app.js

//前后台传递数据
app.use(function(req, res, next) {
  res.locals.moment = moment;  //向前台模板发送处理时间的moment方法
  
  var _user = req.session.user;
  res.locals.user = _user; //传递用户转态

  next();
})

8.各种用到的中间件

  • flash 

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    var flash = require('connect-flash') //存储变量的中间件，相当全局变量
    app.use(flash())

    使用
    var error = req.flash('error')

  • logger 

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    var logger = require('morgan'); //处理日志模块 

    //日志文件
    var fs = require('fs');
    var accessLogfile = fs.createWriteStream('access.log', {flags:'a'});
    var errorLogfile = fs.createWriteStream('error.log', {flags:'a'});

    app.set('env', 'production');
    app.use(logger({stream: accessLogfile})); //访问日志

    //处理错误日志，处理错误的中间件一定要写在路由后面
    if ('production' == app.get('env')) {
      app.use(function(err, req, res, next){
        var meta = '[' + new Date() + '] ' + req.url + '\n';
        errorLogfile.write(meta + err.stack + '\n');
        next();
      });
    }

  • moment 

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    app.js
    var moment = require('moment'); //处理时间格式
    在中间件里
    res.locals.moment = moment;  //向前台模板发送处理时间的moment方法

    jade模板文件
    moment(item.meta.updateAt).format('MM/DD/YYYY') //item.meta.updateAt是后台传过来的时间数据new Date()

  • bcrypt-nodejs 加盐模块

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    var bcrypt = require('bcrypt-nodejs');
    var SALL_WORK_FACTOR = 10; //数值越大，破解越复杂
    bcrypt.genSalt(SALL_WORK_FACTOR, function(err, salt) {
            if(err) return next(err);

            bcrypt.hash(user.password, salt, null, function(err, hash) {
                if(err) return next(err);

                user.password = hash
                next() //将流程走下去
            })
        })

  • underscore （用到这模块的继承方法） 

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    var _ = require('underscore');
    _movie = _.extend(movie, movieObj)

9.jade模板引擎

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layout.jade 公用的部份

doctype html
html
  head
    meta(charset="utf-8")
    title #{title} - imoocMovie
    include ./includes/head
  body
    include ./includes/header
    block content
    include ./includes/footer

引进用include
block content是主体内容

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extends ../layout  //-扩展layout

block content
  .container
    .row
      each cat in categories
        .panel.panel-default
          .panel-heading
            h3
              a(href='/results?cat=#{cat._id}&p=0') #{cat.name}
          .panel-body
            if cat.movies && cat.movies.length > 0
              each item in cat.movies
                .col-md-2
                  .thumbnail
                    a(href="/movie/#{item._id}")
                      if item.poster.indexOf('http:') > -1
                        img(src="#{item.poster}", alt="#{item.title}")
                      else
                        img(src="/upload/#{item.poster}", alt="#{item.title}")
                    .caption
                      h4 #{item.title}
                      p: a.btn.btn-primary(href="/movie/#{item._id}", role="button") 观看预告片
    script(src='/build/admin.min.js')

  • request（发http请求）
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    var request = require('request');

    //用法
    request({url: url, json: true}, function (error, response, body) {
                if (!error && response.statusCode === 200) {
                    var data = body;
                    var now = (new Date().getTime());
                    var expires_in = now + (data.expires_in - 20) * 1000;
                    data.expires_in = expires_in;
                    resolve(data);
                    //console.log(data);
                } else {
                    reject('can not get ticket')
                }
            });

发表于 更新于 阅读次数：

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错误：

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request = Promise.promisify( require( ‘request’ ) )

调用
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return new Promise(function(resolve, reject){
       request({url: url, json: true} ).then (function ( response ) {
          
                var data = response[1];
                var now = (new Date().getTime());
                var expires_in = now + (data.expires_in - 20) * 1000;
                data.expires_in = expires_in;
                resolve(data);
         
        })
  
   })

**报错**：属性expires undefined

本来以为request promise化后可以用then函数，所以一开始没有怀疑then的使用

分析：expires没有定义，那么就跟data有关，data与response有关，假如没有获取的话，就会出错。那么，response是由request发请求后相应回来的数据，有理由怀疑是request使用的问题。
分析报错信息，一步步追根溯源，才能找出问题所在。

解决：
Request的使用改为：

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return new Promise(function(resolve, reject){
       request({url: url, json: true}, function (error, response, body) {
            if (!error && response.statusCode === 200) {
                var data = body;
                var now = (new Date().getTime());
                var expires_in = now + (data.expires_in - 20) * 1000;
                data.expires_in = expires_in;
                resolve(data);
                console.log(data);
            } else {
                reject()
            }
        });     
   })

没有使用promise化的then函数

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问题：客户端收不到微信服务器发来的消息，并显示”该公众号暂时无法提供服务“
为什么会这样呢？
第一步推断：假如微信服务器没有在5秒内接收到服务器发来的消息，会自动断开连接，重发请求，重复三次。所以可能是服务器或者代码程序的问题
进一步推断： 可是程序没有报错，昨天微信服务器是可以接受到第三方服务器的消息的。
反复的检查：发现发送过去的小xml格式如下：


<![CDATA[ o1PAWszjPU3zudiu7yxmNg7hLp00 ]]>
<![CDATA[ gh_4a832c2991ae ]]>

![CDATA][ ]里的内容是无法被服务器解析的，可是有一点很显眼，【】里面userId号的前面多了个空格，难道它连空格也不去除直接导致userId不正确，找不到用户吗？？
二话不说，直接测试一下….
丫的，还果真如此！哈哈，xml格式还真TM的严格
以后一定要注意![CDATA][ ]里首字母不能有空格！

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错误：上传永久素材时，回复客户端是出错，“改公众号无法提供服务”
解决：不一定是代码的问题，这是由于微信服务器在这一块不稳定，再试多一次就好了

发表于 更新于 阅读次数：

前言

编写web离线应用，需要把应用文件和数据存在本地，也就是浏览器中。这主要用到了H5的三个重要的知识点，Application Cache(应用程序缓存), localStorage/sessionStorage(web存储), web SQL(web数据库)。

Application cache

如果要启用应用缓存，就需要在html标签加manifest属性

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<!DOCTPYE HTML>
<html manifest="demo.appcache">
...
</html>

demo.appcache就是写需要缓存页面信息的manifest文件，文件的后缀名可以任写，但建议统一为.appcache。

manifest文件

告知浏览器需要（或不需要）缓存的文件，包括三部分：

  • CACHE MANIFEST 此标题下出现的文件将在首次下载后进行缓存
  • NETWORK 此标题下列出的文件需要在访问服务器，且不被缓存
  • FALLBACK 此标题下列出的文件是页面无法被访问时退回的页面

第一行写CACHE MANIFEST是必须的，写法为

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CACHE MANIFEST
# 2017-06-10 v1.0.0
index.html 
jqury.min.js

#后面的是注释，写上日期和版本号，当index.html等页面有更新时，改日期或者版本号，浏览器会将页面进行更新和缓存，方便。其中能应用默访问的页面，也就是index.html是默认被缓存的，不写也可以。一般写修改不频繁的文件

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NETWORK:
*

一般写星号，也就是其他的页面都要通过访问服务器

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FALLBACK:
/html/ /offline.html

如果无法建立因特网连接，则用 “offline.html” 替代 /html5/ 目录中的所有文件。

更新缓存的情况

  • 用户清空浏览器缓存
  • manifest文件被修改
  • 由程序文件来更新应用缓存

设置MIME-type

需要给manifest文件设置MIME-type为text/cache-manifest

  • 在Apache服务器
    可以在根目录下添加.htaccess文件
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    AddType text/cache-manifest manifest
    或者在manifest文件开头添加（前提是文件是php后缀名）
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    <?php
    header("Content-Type: text/cache-manifest");
    ?>
    ==貌似使用nodejs做后台不用设置MIME-type也可以将程序文件写进缓存==

localStorage/sessionStorage

在浏览器上（本地）储存用户的浏览数据
两者的区别就在于，localStorage储存的数据没有时间的限制，sessionStorage储存的数据，当关闭浏览器时，数据就没了。

两者的API都是相同的，主要有一下：

  • 保存数据：localStorage.setItem(key,value);
  • 读取数据：localStorage.getItem(key);
  • 删除单个数据：localStorage.removeItem(key);
  • 删除所有数据：localStorage.clear();
  • 得到某个索引的key：localStorage.key(index);
    保存数据还可以直接定义localStorage的属性，比如localStorage.resource = value
    一般储存变更频繁的文件

web SQL

位于浏览器中的关系型数据库
核心的方法就三个：

  • openDatabase：这个方法使用现有数据库或创建新数据库创建数据库对象。

  • transaction：这个方法允许我们根据情况控制事务提交或回滚，意思是可以划分事务。

  • executeSql：这个方法用于执行真实的SQL查询。

打开数据库

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var db = openDatabase('mydb', '1.0', 'Test DB', 2 * 1024 * 1024);

openDatebase方法接受五个参数，分别是：

  • 数据名称
  • 数据库版本（写死就行）
  • 数据库描述
  • 大小
  • 回调（可选）

插入和读取数据

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var db = openDatabase('mydb', '1.0', 'Test DB', 2 * 1024 * 1024);
 
db.transaction(function (tx) {
   tx.executeSql('CREATE TABLE IF NOT EXISTS LOGS (id unique, log)');
   tx.executeSql('INSERT INTO LOGS (id, log) VALUES (1, "菜鸟教程")');
   tx.executeSql('INSERT INTO LOGS (id, log) VALUES (2, "www.runoob.com")');
});
 
db.transaction(function (tx) {
   tx.executeSql('SELECT * FROM LOGS', [], function (tx, results) {
      var len = results.rows.length, i;
      msg = "<p>查询记录条数: " + len + "</p>";
      document.querySelector('#status').innerHTML +=  msg;
    
      for (i = 0; i < len; i++){
         alert(results.rows.item(i).log );
      }
    
   }, null);
});

采用MVC思想写js代码

  • applicationcontroller.js //程序的入口程序主控制器，向外暴露一个start方法，作为程序的入口。其他的私有函数都是对次控制器暴露出的方法的调用

  • articlescontroller.js //操作articles模型，调用article暴露出的方法实现增删改查以及调用template的方法渲染页面

  • article.js //article模型，调用更底层的database对象（对数据库操作的封装）

  • database.js //更底层的M层，封装对数据库的操作

  • templates.js //V层，插入html节点

程序的入口就只有一个

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//applicationController.js
//webapp的入口函数，类似C语言中的main，或者jq中的$(document).ready
    function start(resources, storeResources) {
        APP.database.open(function() {
            //监听hash的变化
            $(window).bind("hashchange", route);

            //往DOM里添加CSS
            $("head").append('<style>' +　resources.css + '</style>');

            //创造app应用名称节点
            $('body').html(APP.templates.application());

            //移除下载提示
            $('#loading').remove();

            route();
        });

        if(storeResources) {
            localStorage.resources = JSON.stringify(resources);
        }
    }

在index.html调用
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$(document).ready(function() {
            console.log('ready %o', new Date()); //%o代替javascript对象

            var APP_START_FAILED = "I'm sorry, the app can't start right now."

            function startWithResources(resources, storeResources) {
                //执行加载的js函数
                try {
                    //eval(resources.js)
                    insertScript(resources.js);
                    setTimeout(function() {
                        APP.applicationController.start(resources, storeResources);  //程序入口
                    }, 500); 

                } catch(e) {
                    alert(APP_START_FAILED);
                    console.log('%o', e);
                } 
            }

            function startWithOnlineResources(resources) {
                startWithResources(resources, true);
            }

            function startWithOfflineResources() {
                var resources;

                //假如之前已经访问了并且js文件已经缓存进localStorage，执行以下
                if(localStorage && localStorage.resources) {
                    resources = JSON.parse(localStorage.resources);
                    startWithResources(resources, false);

                    //否则输出提醒信息
                }else {
                    alert(APP_START_FAILED);
                }
            }
            
            function insertScript(script) {
                var node = document.createElement('script');
                node.innerHTML = script;
                document.head.appendChild(node);
            }

            //假如设备离线，则执行离线操作
            if(navigator && navigator.onLine === false) {
                startWithOfflineResources();

                //否则，下载资源并执行，假如成功就把资源添加进local storage。
            }else {
                $.ajax({
                    url: 'api/resources',
                    success: startWithOnlineResources,
                    error: startWithOfflineResources,
                    dataType: 'json'
                });
            }

            
        })

程序的设计就类似于树形的结构：

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graph TD
    A[程序入口]-->B[主控制器]
    B-->C[各种次控制器]
    C-->D[模型]
    C-->E[视图]
    B-->E

主控制器的第一步工作是打开数据库

对象的封装

全局就一个APP对象，为window的全局变量

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window.APP = {};
(function(APP){
    APP.applicationController = (function(){
        ...
        
        return {
            start: start
        }
    }());
    
    APP.articleController = (funcion(){
       ...
       
       return {
            synchronizeWithServer:　synchronizeWithServer,
            showArticle: showArticle,
            showArticleList: showArticleList
        }
    }());
    
    
    
    APP.templates = (function(){}(
        ...
        
        return {
            application: application,
            home: home,
            articleList: articleList,
            article: article,
            articleLoading:　articleLoading
        }
        
    )()};
    
    APP.database = (function(){}(
        ...
        
        return {
            open: open,
            runQuery: runQuery
        }
    )()};
    
    APP.article = (function(){}(
        ...
        
        return {
            deleteArticles: deleteArticles,
            insertArticles: insertArticles,
            selectBasicArticles: selectBasicArticles,
            selectFullArticle: selectFullArticle
        }
    )()};
}(APP))

这里运用的JS的闭包思想，每一个(function(){…}()()};都是单独的作用域，代码不会被污染，全局就只有一个对象APP.

发表于 更新于 阅读次数：

开发第一步

不是埋头就是实现各种逻辑，而是，划分好逻辑模块，思考各个模块的位置（目录位置），因为总不能将所有代码都放在app.js里，进而构成了整个项目的架构。

开发微信公众号，理解整个交互的流程。客户端 《 == 》微信服务器 《 == 》项目服务器

开发前的准备工作请详细看微信开发者文档，这里只讨论代码实现。

开始开发

我们使用koa框架。
app.js

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'use strict'

var Koa = require('koa')
var wechat = require('./wechat/g')  //可以看作是程序的第二个流程，实现验证 以及调用回复功能
var config = require('./config') //公众号的配置配置信息
var reply = require('./wx/reply')  //处理客户发过来的消息，回复逻辑
var Wechat = require('./wechat/wechat') //回复各种消息类型获取的api，封装在Wechat对象中

var app = new Koa()

app.use(wechat(config.wechat, reply.reply))

app.listen(1234)
console.log("listening at port 1234...")

wechat/g.js

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'use strict'

var sha1 = require('sha1')
var getRawBody = require('raw-body')
var Wechat = require('./wechat')
var util = require('./util')

module.exports = function(opts, handler) {
    var wechat = new Wechat(opts)

    return function *(next){

                var token = opts.token
                var signature = this.query.signature
                var nonce = this.query.nonce
                var timestamp = this.query.timestamp
                var echostr = this.query.echostr
                var str = [token, timestamp, nonce].sort().join('')
                var sha = sha1(str)

                if(this.method == 'GET'){
                    if(sha === signature){
                        this.body = echostr + ''
                    }
                    else{
                        this.body = 'wrong'
                    }
                }
                else if(this.method == 'POST'){
                    console.log(this.method)
                    if(sha !== signature){
                        this.body = 'wrong'

                        return false
                    }

                    var data = yield getRawBody(this.req, { //xml格式的数据
                        length: this.length,
                        limit: '1mb',
                        encoding: this.charset
                    })

                    //console.log(data.toString())
                    var content = yield util.parseXMLAsync(data) //转化为json格式的数据
                    //console.log(content)
                    var message = util.formatMessage(content.xml)
                    //console.log(message)

                   this.weixin = message

                   yield handler.call(this, next)

                   wechat.reply.call(this)   //数据转化为最终的xml格式，客户端只能解析xml格式数据
                }
                
            }
}

wechat/wechat.js

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'use strict'

var Promise = require('bluebird')
var request = require('request')
var util = require('./util')
var fs = require('fs')
var _ = require('lodash')

var prefix = 'https://api.weixin.qq.com/cgi-bin/'
var api = {
    accessToken : prefix + 'token?grant_type=client_credential',
    temporary: {
        upload : prefix + 'media/upload?',
        fetch: prefix + 'media/get?'
    },
    permanent: {
        upload: prefix + 'material/add_material?',
        fetch: prefix + 'material/get_material?',
        uploadNews: prefix + 'material/add_news?',
        uploadNewsPic:prefix + 'material/uploadimg?',
        del: prefix + 'material/del_material?',
        update: prefix + 'material/update_news?',
        count: prefix + 'material/get_materialcount?',
        batch: prefix + 'material/batchget_material?'
    },
    group: {
        create: prefix + 'groups/create?',
        fetch: prefix + 'groups/get?',
        check: prefix + 'groups/getid?',
        update:prefix + 'groups/update?',
        move: prefix + 'groups/members/update?',
        batchupdata: prefix + 'groups/members/batchupdate?',
        del: prefix + 'groups/delete?'
    },
    user: {
        remark: prefix +　'user/info/updateremark?',
        fetch: prefix +　'user/info?',
        batchFetch: prefix + 'user/info/batchget?',
        list: prefix +　'user/get?'
    },
    mass: {
        group: prefix + 'message/mass/sendall?',
        openId: prefix + 'message/mass/send?',
        del: prefix + 'message/mass/delete?',
        preview: prefix + 'message/mass/preview?',
        check: prefix + 'message/mass/get?'
    },
    menu: {
        create: prefix + 'menu/create?',
        get:　prefix +　'menu/get?',
        del: prefix + 'menu/delete?',
        current: prefix + 'get_current_selfmenu_info?'
    },   
    semantic: 'https://api.weixin.qq.com/semantic/semproxy/search?',
    ticket: {
        get : prefix +　'ticket/getticket?'
    }
    
}

function Wechat(opts){
    var that = this

    this.appID = opts.appID
    this.appSecret = opts.appSecret
    this.getAccessToken = opts.getAccessToken
    this.saveAccessToken = opts.saveAccessToken
    this.getTicket = opts.getTicket
    this.saveTicket = opts.saveTicket

    this.fetchAccessToken()
}

//获取ticket
Wechat.prototype.fetchTicket = function(access_token){
    var that = this

    return this.getTicket()
        .then(function(data){
            try{
                data = JSON.parse(data)
            }
            catch(e){
                return that.updateTicket(access_token)
            }
            
            if(that.isValidTicket(data)){
                return Promise.resolve(data)
            }
            else{
                return that.updateTicket(access_token)
            }
        })
        .then(function(data){
            that.saveTicket(data)

            return Promise.resolve(data)
        })
}

Wechat.prototype.updateTicket = function(access_token){

   var url = api.ticket.get + '&access_token=' + access_token + '&type=jsapi'

   return new Promise(function(resolve, reject){
       request({url: url, json: true}, function (error, response, body) {
            if (!error && response.statusCode === 200) {
                var data = body;
                var now = (new Date().getTime());
                var expires_in = now + (data.expires_in - 20) * 1000;
                data.expires_in = expires_in;
                resolve(data);
                //console.log(data);
            } else {
                reject('can not get ticket')
            }
        });     
   })
   
}

Wechat.prototype.isValidTicket = function(data){
    if(!data || !data.ticket || !data.expires_in){
        return false
    }

    var ticket = data.ticket
    var expires_in = data.expires_in
    var now = (new Date().getTime())

    if(ticket && now < expires_in){
        return true
    }
    else{
        return false
    }
}

//获取access_token
Wechat.prototype.fetchAccessToken = function(data){
    var that = this

    if(this.access_token && this.expires_in){
        if(this.isValidAccessToken(this)){
            return Promise.resolve(this)
        }
    }

    return this.getAccessToken()
        .then(function(data){
            try{
                data = JSON.parse(data)
            }
            catch(e){
                return that.updateAccessToken()
            }
            
            if(that.isValidAccessToken(data)){
                return Promise.resolve(data)
            }
            else{
                return that.updateAccessToken()
            }
        })
        .then(function(data){
            that.access_token = data.access_token
            that.expires_in = data.expires_in

            that.saveAccessToken(data)

            return Promise.resolve(data)
        })
}

Wechat.prototype.isValidAccessToken = function(data){
    if(!data || !data.access_token || !data.expires_in){
        return false
    }

    var access_token = data.access_token
    var expires_in = data.expires_in
    var now = (new Date().getTime())

    if(now < expires_in){
        return true
    }
    else{
        return false
    }
}

Wechat.prototype.updateAccessToken = function(){
   var appID = this.appID
   var appSecret = this.appSecret
   var url = api.accessToken + '&appid=' + appID + '&secret=' + appSecret

   return new Promise(function(resolve, reject){
       request({url: url, json: true}, function (error, response, body) {
            if (!error && response.statusCode === 200) {
                var data = body;
                var now = (new Date().getTime());
                var expires_in = now + (data.expires_in - 20) * 1000;
                data.expires_in = expires_in;
                resolve(data);
                //console.log(data);
            } else {
                reject('can not get access_token')
            }
        });     
   })
   
}

Wechat.prototype.uploadMaterial = function(type, material, permanent){
    var that = this
    var form = {}
    var uploadUrl = api.temporary.upload

    if(permanent){
        uploadUrl = api.permanent.upload

        _.extend(form, permanent)
    }

    if(type === 'pic'){
        uploadUrl = api.permanent.uploadNewsPic
    }

    if(type === 'news'){
        uploadUrl = api.permanent.uploadNews
        form = material
    }
    else{
        form.media = fs.createReadStream(material)
    }
   

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = uploadUrl + 'access_token=' + data.access_token 

                if(!permanent) {
                    url += '&type=' + type
                }
                else{
                    form.access_token = data.access_token
                }

                var options = {
                    method: 'POST',
                    url: url,
                    json: true
                }

                if(type === 'news'){
                    options.body = form
                }
                else{
                    options.formData = form
                }

                request(options, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        //console.log(_data);
                    } else {
                        throw new Error('upload material fails')
                    }
                }) 

           })

          
   })
   
}

Wechat.prototype.fetchMaterial = function(mediaId, type, permanent){
    var that = this
    var fetchUrl = api.temporary.fetch

    if(permanent){
        fetchUrl = api.permanent.fetch
    }
   
   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = fetchUrl + 'access_token=' + data.access_token 
                var form = {}
                var options = {method:'POST', url: url, json: true}

                if(permanent){
                    form.media_id = mediaId
                    form.access_token = data.access_token
                    options.body = form
                }
                else{
                    if(type === 'video'){
                        url = url.replace('https://', 'http://')
                    }
                    url += '&media_id=' + mediaId
                }

               if(type === 'news' || type === 'video'){
                   request(options, function (error, response, body) {
                        if (!error && response.statusCode === 200) {
                            var _data = body;
                            
                            if(_data){
                                resolve(_data);
                            }                     
                        
                        } else {
                            throw new Error('delete material fails')
                        }
                    })
               }
               else{
                   resolve(url)
               }

                

           })

          
   })
   
}

Wechat.prototype.deleteMaterial = function(mediaId){
    var that = this
    var form = {
        media_id:mediaId
    }
   
   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.permanent.del + 'access_token=' + data.access_token + '&media_id=' + mediaId

                request({method:'POST', url: url, body:form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('delete material fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.updateMaterial = function(mediaId, news){
    var that = this
    var form = {
        media_id:mediaId
    }

    _.extend(form, news)
   
   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.permanent.update + 'access_token=' + data.access_token + '&media_id=' + mediaId

                request({method:'POST', url: url, body:form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('delete material fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.countMaterial = function(){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.permanent.count + 'access_token=' + data.access_token

                request({method:'GET', url: url, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('count material fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.batchMaterial = function(options){
    var that = this

    options.type = options.type || 'image'
    options.offset = options.offset || 0
    options.count = options.count || 1

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.permanent.batch + 'access_token=' + data.access_token

                request({method:'POST', url: url, body:options, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('batch material fails')
                    }
                }) 
           })         
   })  
}

//用户分组
Wechat.prototype.createGroup = function(name){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.group.create + 'access_token=' + data.access_token
                var form = {
                    group: {
                        name: name
                    }
                }

                request({method:'POST', url: url, body:form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('create group fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.fetchGroup = function(){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.group.fetch + 'access_token=' + data.access_token

                request({url: url, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('fetch group fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.checkGroup = function(openId){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.group.check + 'access_token=' + data.access_token
                var form = {
                    openid : openId
                }

                request({method:'POST', url: url, body: form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('check group fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.updateGroup = function(id, name){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.group.update + 'access_token=' + data.access_token
                var form = {
                    group: {
                        id: id,
                        name: name
                    }
                }

                request({method:'POST', url: url, body: form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('update group fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.moveGroup = function(openIds, to_groupid){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
               var url
               var form = {
                   to_groupid : to_groupid
               }

               if(_.isArray(openIds)){
                   url = api.group.batchupdata + 'access_token=' + data.access_token
                   form.openid_list = openIds
               }
               else{
                   url = api.group.move + 'access_token=' + data.access_token
                   form.openid = openIds
               }  

                request({method:'POST', url: url, body: form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('move group fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.deleteGroup = function(id){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.group.del + 'access_token=' + data.access_token
                var form = {
                    group: {
                        id: id
                    }
                }

                request({method:'POST', url: url, body: form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('delete group fails')
                    }
                }) 
           })         
   })  
}

//获取用户信息
Wechat.prototype.remarkUser = function(openId, remark){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.user.remark + 'access_token=' + data.access_token
                var form = {
                    openid:　openId,
                    remark: remark
                }

                request({method:'POST', url: url, body: form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('remark user fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.fetchUser = function(openIds, lang){
    var that = this
    
    var lang = lang || 'zh_CN'


   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
               var options　= {
                   json: true
               }

               if(_.isArray(openIds)){
                   options.url = api.user.batchFetch + 'access_token=' + data.access_token
                   options.method = 'POST'
                   options.body = {
                       user_list : openIds
                   }
               }
               else{
                   options.url = api.user.fetch + 'access_token=' + data.access_token + '&openid=' + openIds + '&lang=' + lang
               }

                request(options, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('fetch users fails')
                    }
                }) 
           })         
    })  
}

Wechat.prototype.listUsers = function(openId){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.user.list + 'access_token=' + data.access_token
                
                if(openId){
                    url += '&next_openid=' + openId
                }

                request({method:'GET', url: url, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('list users fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.sendByGroup = function(type, message, groupId){
    var that = this
    var msg = {
        filter:{},
        msgtype:type
    }
    msg[type] = message
    if(!groupId){
        msg.filter.is_to_all = true
    }else{
        msg.filter.is_to_all = false
        msg.filter.group_id = groupId
    }


   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.mass.group + 'access_token=' + data.access_token

                request({method:'POST', url: url,body:msg, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                       
                    } else {
                        throw new Error('sell by group fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.sendByOpenId = function(type, message, openIds){
    var that = this

    var msg = {
        touser:openIds,
        msgtype:type
    }

   msg[type] = message

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.mass.openId + 'access_token=' + data.access_token

                request({method:'POST', url: url, body:msg, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        
                    } else {
                        throw new Error('sell by openid fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.deleteMass = function(msgId){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.mass.del + 'access_token=' + data.access_token
                var form = {
                    msg_id : msgId
                }

                request({method:'POST', url: url,body:form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        
                    } else {
                        throw new Error('delete Mass fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.previewMass = function(type, message, openId){
    var that = this
    var msg = {
        touser:openId,
        msgtype:type
    }
    msg[type] = message

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.mass.preview + 'access_token=' + data.access_token

                request({method:'POST', url: url,body:msg, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        
                    } else {
                        throw new Error('preview mass fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.checkMass = function(msgId){
    var that = this
    var form = {
        msg_id : msgId
    }

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.mass.check + 'access_token=' + data.access_token

                request({method:'POST', url: url,body:form, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        
                    } else {
                        throw new Error('check mass fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.createMenu = function(menu){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){  
                var url = api.menu.create + 'access_token=' + data.access_token

                request({method:'POST', url: url,body:menu, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        
                    } else {
                        throw new Error('create menu fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.getMenu = function(){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.menu.get + 'access_token=' + data.access_token

                request({url: url, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        
                    } else {
                        throw new Error('get menu fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.deleteMenu = function(){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.menu.del + 'access_token=' + data.access_token

                request({url: url, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        
                    } else {
                        throw new Error('delete menu fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.currentSelfMenu = function(){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){
                var url = api.menu.current + 'access_token=' + data.access_token

                request({url: url, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        
                    } else {
                        throw new Error('get current selfmenu fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.semantic = function(semanticData){
    var that = this

   return new Promise(function(resolve, reject){
       that
           .fetchAccessToken()
           .then(function(data){  
                var url = api.semantic + 'access_token=' + data.access_token
                semanticData.appid = data.appID

                request({method:'POST', url: url,body:semanticData, json: true}, function (error, response, body) {
                    if (!error && response.statusCode === 200) {
                        var _data = body;
                        
                        if(_data){
                            resolve(_data);
                        }                     
                        
                    } else {
                        throw new Error('semantic data fails')
                    }
                }) 
           })         
   })  
}

Wechat.prototype.reply = function(){  //实现完整的回复逻辑，放回给客户端xml格式数据
    var content = this.body   //此时的this.body是json数据格式
    var message = this.weixin
    var xml = util.tpl(content, message)  //将content与message中的内容提出整合，此时已经变成了xml格式
    //console.log('xml:'+ xml)

    this.status = 200
    this.type = 'application/xml'
    this.body = xml

}

module.exports = Wechat

wx/reply.js 处理客户端消息

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'use strict'

var config = require('../config')
var Wechat = require('../wechat/wechat')
var wechatApi = new Wechat(config.wechat)
var menu = require('./menu')

/*wechatApi.deleteMenu().then(function(){
    return wechatApi.createMenu(menu)
}).then(function(msg){
    console.log(msg)
})*/

exports.reply = function *(next){
 
    var message = this.weixin

    if(message.MsgType === 'event'){
        if(message.Event === 'subscribe'){
            if(message.EventKey) {
                console.log('扫二维码进来：'+ message.EventKey +' '+ message.ticket)
            }
            this.body =  '么么哒'
        }
        else if(message.Event === 'unsubscribe'){
            console.log('无情取关！')
            this.body = ' '
        }
        else if(message.Event === 'LOCATION'){
            this.body = '您上报的位置是：' + message.Latitude + '/' + message.Longitude + '-' +message.Precision
        }
        else if(message.Event === 'CLICK'){
            this.body = '您点击了菜单：'+ message.EventKey
        }
        else if(message.Event === 'SCAN'){
            console.log('关注后扫二维码'+ message.EventKey + ' '+ message.Ticket)
            this.body = '您扫了二维码哦'
        }
        else if(message.Event === 'VIEW'){
            this.body = '您点击了菜单中的连接：'+ message.EventKey
        }
        else if(message.Event === 'scancode_push'){
            console.log(message.ScanCodeInfo.ScanType)
            console.log(message.ScanCodeInfo.ScanResult)
             this.body = '您点击了菜单中的：'+ message.EventKey
        }
        else if(message.Event === 'scancode_waitmsg'){
             console.log(message.ScanCodeInfo.ScanType)
             console.log(message.ScanCodeInfo.ScanResult)
             this.body = '您点击了菜单中的：'+ message.EventKey
        }
        else if(message.Event === 'pic_sysphoto'){
             console.log(message.SendPicsInfo.Count)
             console.log(message.SendPicsInfo.PicList)
             this.body = '您点击了菜单中的：'+ message.EventKey
        }
        else if(message.Event === 'pic_photo_or_album'){
             console.log(message.SendPicsInfo.Count)
             console.log(message.SendPicsInfo.PicList)
             this.body = '您点击了菜单中的：'+ message.EventKey
        }
        else if(message.Event === 'pic_weixin'){
             console.log(message.SendPicsInfo.Count)
             console.log(message.SendPicsInfo.PicList)
             this.body = '您点击了菜单中的：'+ message.EventKey
        }
        else if(message.Event === 'location_select'){
             console.log(message.SendLocationInfo.Location_X)
             console.log(message.SendLocationInfo.Location_Y)
             console.log(message.SendLocationInfo.Scale)
             console.log(message.SendLocationInfo.Label)
             console.log(message.SendLocationInfo.Poiname)
             this.body = '您点击了菜单中的：'+ message.EventKey
        }
    }
    else if(message.MsgType === 'text'){
        var content = message.Content
        var reply = '你说的“' + message.Content + '” 我们没有这样的服务'

        if(content === '1'){
            reply = '天下第一'
        }
        else if(content === '2'){
            reply = '天下第二'
        }
        else if(content === '3'){
            reply = '天下第三'
        }
        else if(content === '4'){
            reply = [{
                title: 'nodejs开发微信',
                description: 'nodejs是服务器端的js脚本语言，用最火的技术开发微信公众号，你还等什么',
                picUrl: 'http://www.aseoe.com/images/aseoe_nodejs_txal.jpg',
                url: 'https://nodejs.org'
            },{
                title: '前端三大框架',
                description: 'vue.js React.js angular.js是目前前端最火的三大框架',
                picUrl: 'http://5xruby.tw/uploads/course/image/57/thumb_5x_VueJs-1024x768_5x.png',
                url: 'https://cn.vuejs.org/'
            }
            ]
        }
        else if(content === '5'){
            var data  = yield wechatApi.uploadMaterial('image', __dirname + '/2.jpg')

            reply = {
                type:'image',
                mediaId: data.media_id
            }
            console.log(data.media_id)
        }
        else if(content === '6'){
            var data  = yield wechatApi.uploadMaterial('video', __dirname + '/6.mp4')

            reply = {
                type:'video',
                title: '跪着唱征服',
                description: '试试这是个怎样的感觉',
                mediaId: data.media_id
            }
        }
        else if(content === '7'){
            var data  = yield wechatApi.uploadMaterial('image', __dirname + '/2.jpg')

            reply = {
                type:'music',
                title: '《李白》--李荣浩',
                description: '轻松时刻',
                musicUrl: 'http://link.hhtjim.com/163/27678655.mp3',
                hqMusicUrl: 'http://link.hhtjim.com/163/27678655.mp3',
                thumbMediaId: data.media_id
            }
        }
        else if(content === '8'){
            var data  = yield wechatApi.uploadMaterial('image', __dirname + '/2.jpg',{type:'image'})

            reply = {
                type:'image',
                mediaId: data.media_id
            }
        }
        else if(content === '9'){
            var data  = yield wechatApi.uploadMaterial('video', __dirname + '/6.mp4',{type:'video', description:'{"title":"VIDEO_TITLE","introduction":"INTRODUCTION"}'})

            reply = {
                type:'video',
                title: '跪着唱征服',
                description: '试试这是个怎样的感觉',
                mediaId: data.media_id
            }
        }
        else if(content === '10'){
            var picData  = yield wechatApi.uploadMaterial('image', __dirname + '/2.jpg',{})

            var media = {
                articles:[{
                    title:'angularjs入门',
                    thumb_media_id:picData.media_id,
                    show_cover_pic:1,
                    author:'Leo',
                    digest:'关于angularjs摘要',
                    content:'augular是目前前端最火框架之一',
                    content_source_url:'https://docs.angularjs.org/'
                    }
                ]
                
            }

           var  data = yield wechatApi.uploadMaterial('news', media, {})
           console.log('我要的mediaId：'+ data.media_id)
           data = yield wechatApi.fetchMaterial(data.media_id, 'news', {})

           console.log(data)

           var items = data.news_item
           var news = []

           items.forEach(function(item){
               news.push({
                   title: item.title,
                   description: item.digest,
                   picUrl: picData.url,
                   url: item.url
               })
           })

           reply = news

        }
        else if(content === '11'){
            var counts  = yield wechatApi.countMaterial()

            console.log(JSON.stringify(counts))

            var results = yield [
                wechatApi.batchMaterial({
                    type: 'image',
                    offset: 0,
                    count: 10
                }),
                wechatApi.batchMaterial({
                    type: 'video',
                    offset: 0,
                    count: 10
                }),
                wechatApi.batchMaterial({
                    type: 'vioce',
                    offset: 0,
                    count: 10
                }),
                wechatApi.batchMaterial({
                    type: 'news',
                    offset: 0,
                    count: 10
                })
            ]

            console.log(JSON.stringify(results))

            reply = 'ok'
        }
        else if(content === '12'){
           /* var group1 = yield wechatApi.createGroup('wechat1')
            console.log('新分组wechat1:')
            console.log(group1)

            var groups = yield wechatApi.fetchGroup()
            console.log('加了wechat1的分组:')
            console.log(groups)

            var group2 = yield wechatApi.checkGroup(message.FromUserName)
            console.log('查看自己的分组:')
            console.log(group2)

            var group3 = yield wechatApi.updateGroup(100, 'wechat_update')
            console.log('把wechat1分组改为wechat_update')
            console.log(group3)

            groups = yield wechatApi.fetchGroup()
            console.log('查看把wechat1分组改为wechat_update后的分组:')
            console.log(groups)

            var group4 = yield wechatApi.moveGroup(message.FromUserName, 2)
            console.log('把我移动到2组')
            console.log(group4)

            groups = yield wechatApi.fetchGroup()
            console.log('查看把我移动到2组后的分组:')
            console.log(groups)

            var group5 = yield wechatApi.moveGroup([message.FromUserName], 0)
            console.log('批量移动 把我移动到0组')
            console.log(group5)

            var groups = yield wechatApi.fetchGroup()
            console.log('查看 批量移动 把我移动到0组后的分组:')
            console.log(groups)
*/          
            var groups = yield wechatApi.fetchGroup()
            console.log(groups)
            var group_delete = yield wechatApi.deleteGroup(101)
            console.log('删除101')
            console.log(group_delete)
            groups = yield wechatApi.fetchGroup()
            console.log('删除101后的分组')
            console.log(groups)

            reply = 'Groups done'

        }
        else if(content === '13'){
          /* var remark = yield wechatApi.remarkUser(message.FromUserName, '超级大帅哥')
            console.log(remark)
            */
            var user = yield wechatApi.fetchUser(message.FromUserName)
            console.log(user)

           /* var openIds = [{
                openid : message.FromUserName, 
                lang:'zh_CN'
            }]
            var users = yield wechatApi.fetchUser(openIds)
            console.log(users)
            */
            reply = JSON.stringify(user)

        }
        else if(content === '14'){
            var list = yield wechatApi.listUsers()
            console.log(list)

            reply = list.total
        }
        else if(content === '15'){
            var mpnews = {
                media_id : 'fTn2AjmZW41YaIc0iw-86l9rCE_Ex4LNtT_SXvISNFQ'
            }

            var text = {
                content: '天要下雨了'
            }

            var msgData = yield wechatApi.sendByGroup('text', text, 0)

            console.log(msgData)
            reply = '内容如下'
        }
        else if(content === '16'){
            var mpnews = {
                media_id : 'fTn2AjmZW41YaIc0iw-86l9rCE_Ex4LNtT_SXvISNFQ'
            }
          
           /* var text = {
                content: '天一直在打雷还没下雨'
            }
  */
            var msgData = yield wechatApi.previewMass('mpnews', mpnews, 'okFRawx2UAkxdtKG1i9QNGzgXLA4')

            console.log(msgData)
            reply = '内容如下'
        }
         else if(content === '17'){
             var msgData = yield wechatApi.checkMass('1000000010')
             console.log(msgData)
             reply = 'done'
         }
         else if(content === '18'){
            
                wechatApi.createMenu(menu).then(function(msg){
                console.log('菜单生成状态：'+ JSON.stringify(msg))
            })
             /*var createMenu = yield wechatApi.createMenu(menu)
             console.log(createMenu)
             */
             reply = 'done'
         }
         else if(content === '19'){
            var semanticData = {
                query:"查一下明天从北京到上海的南航机票",
                city:"北京",
                category: "flight,hotel",
                uid: message.FromUserName
            }

            var _semantic = yield wechatApi.semantic(semanticData)
            console.log(_semantic)
             reply = JSON.stringify(_semantic)
         }

        this.body = reply
    }
    

    yield next
}

在koa中使用ejs模板 与 heredoc模块

heredoc模块是作用是封装模板
比如：

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'use strict'

var ejs = require('ejs')
var heredoc = require('heredoc')

var tpl = heredoc(function(){/*
    <xml> 
        <ToUserName><![CDATA[<%= toUserName %>]]></ToUserName>
        <FromUserName><![CDATA[<%= fromUserName %>]]></FromUserName> 
        <CreateTime> <%= createTime %> </CreateTime>
        <MsgType><![CDATA[<%= msgType%>]]></MsgType>
        <% if (msgType === 'text') {%>
            <Content><![CDATA[<%= content%>]]></Content>
        <% } else if(msgType === 'image') { %>
            <Image>
                <MediaId><![CDATA[<%= content.mediaId %>]]></MediaId>
            </Image>
         <% } else if(msgType === 'video') { %>
             <Video>
                <MediaId><![CDATA[<%= content.mediaId %>]]></MediaId>
                <Title><![CDATA[<%= content.title %>]]></Title>
                <Description><![CDATA[<%= content.description %>]]></Description>
            </Video> 
         <% } else if(msgType === 'voice') { %>
             <Voice>
                <MediaId><![CDATA[<%= content.mediaId %>]]></MediaId>
            </Voice>
        <% } else if(msgType === 'music') { %>
            <Music>
                <Title><![CDATA[<%= content.title %>]]></Title>
                <Description><![CDATA[<%= content.description %>]]></Description>
                <MusicUrl><![CDATA[<%= content.musicUrl %>]]></MusicUrl>
                <HQMusicUrl><![CDATA[<%= content.hqMusicUrl%>]]></HQMusicUrl>
                <ThumbMediaId><![CDATA[<%= content.thumbMediaId %>]]></ThumbMediaId>
            </Music> 
        <% } else if(msgType === 'news') { %>
            <ArticleCount><%= content.length %></ArticleCount>           
            <Articles>
            <% content.forEach(function(item){ %>
                <item>
                    <Title><![CDATA[<%= item.title %>]]></Title> 
                    <Description><![CDATA[<%= item.description %>]]></Description>
                    <PicUrl><![CDATA[<%= item.picUrl %>]]></PicUrl>
                    <Url><![CDATA[<%= item.url %>]]></Url>
                </item>
            <% }) %>
            </Articles>
        <% } %>
    </xml>

*/})

var compiled = ejs.compile(tpl)

exports = module.exports = {
    compiled : compiled
}

以上暴露了compiled方法，但只是做好了封装模板而已，还缺少json格式数据
结合json数据

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var tpl = require('以上文件路径')

var data = {
    msgType : 'text',
    content : 'hello world'
}

var xml = tpl.compiled(data)

或者可以使用render方法将模板和数据一并结合
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var xml = ejs.render(tpl, data)

这篇文档算不上很好的教程，只是将开发过程的关键代码展示了出来，还有介绍了，heredoc封装xml模板，理解了用法。

其实做好的教程是，渐进式的从头到尾开发微信公众号，使流程变得清晰杳然，能学到更多。但是鉴于个人微信公众号无法认证，缺失了很有接口权限，申请的测试公众号配置时常出问题，开发困难，时间成本开销很大。所以只展示了关键代码。

思考了一下，项目的关键点可以写个渐进式的教程，展示开发的优化过程，让自己更深入理解知识点。

这篇笔记就写到这吧，全部代码放在github上。

发表于 更新于 阅读次数：

前言

花了差不多一周的时间，用html5的新标签audio制作了一个音乐播放器，感觉最多坑的地方在于前期的布局，逻辑代码的规划也很重要。

在布局上填了很多坑，比如资源税浮动父元素没了高度，用clear也解决不了，不得不利用js设置父的高度等之类的，发现布局也有大学问，这一点要注重。

第二点就是代码规划，因为刚学了前端js的MVC框架（将控制逻辑，模型，视图的js划分开），所以想尝试，在项目里我的mvc框架为：

  • controller/appController.js 控制器总开关，程序的入 口，将controllers连接起来
  • controller/playerController.js 播放器的控制器
  • view/pageStyle.js 页面样式的改变逻辑
  • view/scale.js 进度条对象
  • songs.js 全局的songs模型

结合面向对象的方法，我在点击播放器按钮的时候，进度条，图片旋转和audio同时开始工作，所以把他们捆绑起来会比较好。

下面就这个项目里一些零散的知识点做些记录，以便一下使用。

圣杯布局

圣杯布局是三栏布局的经典布局方式，两侧固定宽度中间自适应。

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<div class="both">
    <div class="middle">中间</div> //优先加载
    <div class="left">左边</div>
    <div class="right">右边</div>
</div>

<style>
    .box{
        padding-left: 250px;  //关键
        padding-right: 250px;  //关键
        line-height: 200px;
        text-align: center;
        color: #fff;
    }
    .box:before,.box:after{ //伪类清除浮动，父元素有高度
        content: '.';
        display: block;
        clear:　both;
        height: 0；
        visibility: hidden; //元素不可见,但占据空间
    }
    .middle,.left,.right{
        float: left;
        height: 200px;
    }
    .middle{
        width: 100%;
        background-color: red;
    }
    .left{
        width: 250px;
        background-color: blue;
        margin-left: -250px; //关键
    }
    .right{
        width: 250px;
        background-color: yellow;
        margin-right: -250px; //关键
    }
</style>

三栏布局的另一经典是双飞翼布局，原理是middlediv下内嵌类为inner的div，利用inner的margin-left和margin-right。左右侧栏div分别float左右。
另一种方法是利用定位：
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  <style>
   body{margin:0; padding:0;}
   #left{float:left;width:150px;background:red;}
   #right{float:right;width:200px;background:green;}
   #middle{
   position:absolute; //关键
   left:150px;
   right:200px;
   word-wrap:break-word;  //让字体打断，不会超出div
   background:blue;
   }
</style>

<div id="middle">
        middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;
        middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;middle;
</div>
<div id="left">left</div>
<div id="right">right</div>

关于布局，还有很多种，请参考：
http://blog.csdn.net/andiqu/article/details/50045609
关注弹性布局（flex），和rem

animition的播放和暂停

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-webkit-animation-play-state: running | paused
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animation-fill-mode: backwards | forwards | both; //播放前显示动画第一帧，播放完显示动画的最后一帧，向前和向后模式都被应用
animation-direction: reverse | alternate; //播放顺序，resverse反向
animation-iteration-count: num | infinite // 2 | 循环

进度条的制作

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<ul id="lanren">
	<li class="curr">00:00</li>
	<li class="progress">
		<div class="scale" id="bar">
			<div></div>
			<span id="btn"></span>
		</div>
	</li>
	<li class="total">00:10</li>
</ul>

<style>
body{margin:0;padding:0;font-size:12px;}
ul#lanren{ margin:50px auto; overflow: hidden; padding: 0 50px 0 50px;}
#lanren li{font-size:12px;line-height:24px; height:24px;list-style:none; position: relative; float: left;}
li.progress{
	width: 100%;
}
li.curr{
	width: 50px;
	margin-right: -50px;
	left: -50px;
	text-align: center;
}
li.total{
	width: 50px;
	margin-left: -50px;
	right: -50px;
	text-align: center;
}
.scale{ background-color: #E4E4E4; border-left: 1px #83BBD9 solid;  width: 100%; height: 3px; position: relative; font-size: 0px; border-radius: 3px; top:11px;}

.scale span{width:8px;height:8px;position:absolute;left:-2px;top:-2.5px;cursor:pointer; background-color: #000; display: inline-block; -webkit-border-radius: 50%;}

.scale div{ background-color: #3BE3FF; width: 0px; position: absolute; height: 3px; width: 0; left: 0; bottom: 0; }
</style>

播放按钮的制作和发光动画

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<div class="playContainer">
	<li class="rewindBtn">  
	    <a href="javascript:;" title="rewind">Rewind</a>  
	    <a href="javascript:;" title="rewind">Rewind</a>  
	</li>
	<li class="playBtn BtnBig">  
	    <a href="javascript:;" title="start">Start</a>  
	</li>
	<!--
	<li class="pauseBtn">  
	    <a href="#" title="pause">Pause</a>  
	</li> 
	--> 
	 
	<li class="forwardBtn playBtn">  
	    <a href="javascript:;" title="forward">Forward</a>  
	    <a href="javascript:;" title="forward">Forward</a>  
	</li>  
</div>

<style>
.playContainer li { 
	position: relative; 
	float: left; 
	border: 50px solid #404040; 
	border-color: rgba(119, 119, 119, 0.3);
	color: transparent; 
	height: 0; 
	width: 0; 
	-webkit-border-radius: 100%; 
	-moz-border-radius: 100%; 
	-o-border-radius: 100%; 
	border-radius: 100%; 
	margin: 0 50px; 
}  
.playContainer a { 
	border-style: solid; 
	text-indent: -9999px; 
	position: absolute; 
	top: -16px; 
	left: -6px;  
}  
li.BtnBig{
	border-width: 70px;
	margin-top: -15px;
}
.playBtn a { 
	border-color: transparent transparent transparent #fff;  
	width: 0; 
	height: 0; 
	border-width: 24px 0 24px 36px;
	left: -10px;
	top: -22px;
}  
.pauseBtn a { 
	border-color: transparent white;  
	border-width: 0 14px;
    height: 36px;
    width: 12px;
    left: -20px;
}    
.forwardBtn a { 
	border-left-width: 16px; 
	left: 2px;
	border-width: 16px 0 16px 16px;
	top: -15px;
}  
.forwardBtn a:first-child { 
	margin-left: -14px;  
}  
.rewindBtn a { 
	border-width: 16px 16px 16px 0; 
	border-color: transparent #fff transparent transparent; 
	width: 0; 
	height: 0; 
}  
.rewindBtn a:first-child { 
	margin-left: -14px; 
} 

//发光动画
@-webkit-keyframes bs {
  0% {
    box-shadow: inset -1px 1px 3px 2px #444444, inset 1px -1px 3px 2px #222222, 0 0 0px 0 #787776;
  }

  50% {
    box-shadow: inset -1px 1px 3px 2px #444444, inset 1px -1px 3px 2px #222222, 0 0 40px 0 #ffffff;
  }

  100% {
    box-shadow: inset -1px 1px 3px 2px #444444, inset 1px -1px 3px 2px #222222, 0 0 0px 0 #b2ff1a;
 }
}
</style>


URI编码

url里的中文服务器是识别不了的，要经过URI编码成Unicode编码，统一资源标识符，浏览器才能准确的找到资源。

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encodeURI("春节") //%DD%DD%DD
decodeURI("%DD%DD%DD")  //解码：春节
相同：
escape()
unescape()

ajax跨域

不涉及后台的跨域，直接用ajax发http请求：
https://bird.ioliu.cn/#interface
其他的跨域都要设计到后台
与jsonp有关

QQ音乐的API

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songsAPI = http://s.music.qq.com/fcgi-bin/music_search_new_platform?t=0&n=10&aggr=1&cr=1&loginUin=0&format=json&inCharset=GB2312&outCharset=utf-8&notice=0&platform=jqminiframe.json&needNewCode=0&p=1&catZhida=0&remoteplace=sizer.newclient.next_song&w={0}

n= 10 ,搜索的数据条目
w= content ,搜索内容
返回的数据中有个f属性，
DATA.data.song.list[i].f: xxx|xxx|xxx.....
其中第一个是songID,第五个是imgID


imgAPI = http://imgcache.qq.com/music/photo/album_500/imgID后面两个数/500_albumpic_imgID_0.jpg

500是图片的大小，支持300和500



srcAPI = http://210.38.1.134:9999/ws.stream.qqmusic.qq.com/songID.m4a?fromtag=46

计时器

当在页面要多次用到定时器时，可以考虑把它挂载到全局。
当用到多个计时器是可以把它放在一个数组里，方便管理。

百度到的资源

专门说进度条的网站：https://usablica.github.io/progress.js/
js,jq获取div高度：http://www.cnblogs.com/xiaopin/archive/2012/03/26/2418152.html
获取div的margin，border，padding，content的宽高
js控制audio标签：http://blog.csdn.net/u014520745/article/details/52412427