wechat-es

In Progress,Do Not Use It!

本项目起源于搭建微信公众号服务器：

• 环境配置
• 解读微信公众号开发文档
• 被动回复消息
• 发送消息

安装

npm i -S wechat-es

功能构成

跟微信公众号开放的API相对应，库主要提供两个服务类，分别是Waiter和Talker，可以在测试中看到这两个类的主要用法。

Waiter

Waiter负责接收公众号的消息，进行签名的验证，还可以将响应封装成XML。

下面这个例子需要用到express和xmlparser：

npm i -S express
npm i -S express-xml-bodyparser

然后创建App，定义路由处理请求：

const app = express()
//Initialize an instance of Weixin
const weixin = new Weixin({
	appId: 'YourAppId',
	appSecret: 'YourAppSecret',
	token: 'Token'
})
const waiterUrl = '/api/weixin'

app.use(express.query())
/**
* Process verify signature request with get method
*/
app.get(waiterUrl, function (req, res, next) {
  const waiter = weixin.getWaiter()
  const {
		signature,timestamp,nonce
	} = req.query

	if(waiter.verifySignature(signature,timestamp,nonce)) {
		res.send(req.query.echostr)
	} else {
		res.send('error')
	}
});
/**
* Process other requests with post method
* We use xmlparser to convert xml in request body to json
*/
app.post(waiterUrl,xmlparser({trim: true, explicitArray: false}),function (req, res, next) {
  const waiter = weixin.getWaiter()
  /**
  * Your need provide a populateReply method for waiter to
  * response what you want.The default implement just reply
  * an text message to say 'I received your message'
  */
  //waiter.populateReply = function(message) {}

  const reply = waiter.process(req)
  res.set('Content-Type', 'text/xml')
  res.send(reply)
});

Talker

Talker 负责给微信公众号服务器发送消息，可以在任何地方使用，用manager创建消息，然后send这个消息就可以了。

const talker = weixin.getTalker()
talker.send(UserManager.getList())
		  .then(result => {
		  	if(!result.errcode) {		  		
				  console.log("Get users:",json)
		  		return CustomerMessageManager.text(result.next_openid,"感谢订阅")
		  	} else {
		  		console.log("Get user list got error:",result.errmsg)
				throw Error(result.errmsg)
		  	}
		  })
		  .then(message => talker.send(message))
		  .catch(error => {
		  	console.log("There is an error to get nextOpenId")
		  })
		  .then(result => {
			  	if(result.errcode) {		  		
					console.log(`Send text message to customer ${nextOpenId} got error:${result.errmsg}`)
			  	} else {
			  		console.log(`Send text message to ${nextOpenId} success`)		  		
			  	}
		   })

开发者参考

• 微信官方文档
• MDN上的Promise文档
• MDN上的Fetch API文档
• form-data
• James K Nelson Writing NPM packages with ES6 using the Babel 6 CLI
• James K Nelson Testing in ES6 with Mocha and Babel 6