微信小程序 聊天室简单实现

var url = 'ws://地址端口';

function connect(user, func) {

 wx.connectSocket({
  url: url,
  header: {"content-type":'application/x-www-form-urlencoded'}
 });
 wx.onSocketOpen(function (res) {
  send('{"type":"login","client_name":"'+user.nickName+'","room_id":"1"}')
 });
//接受消息
 wx.onSocketMessage(func);
}

//发送消息
function send(msg) {
 wx.sendSocketMessage({ data: msg });
}
module.exports = {
 connect: connect,
 send: send
}

var websocket = require('../../utils/websocket.js');
 //事件处理函数
 add: function (e) {
  websocket.send('{"type":"say","from_client_id":"'+user.nickName+'","to_client_id":"all","content":"'+this.data.message+'"}')
 },
 onLoad: function () {
  var that = this
  //调用应用实例的方法获取全局数据
  app.getUserInfo(function (userInfo) {
   user = userInfo;
   websocket.connect(user, function (res) {
    text = that.encodeStr(res.data) + "\n";
    console.log(res)
    that.setData({
     text: text
    });
    // websocket.send('{"type":"pong"}');
   })
  })
 },

 encodeStr: function (str) {
  var character = str.split("\\u");
  var native1 = character[0];
  for (var i = 1; i < character.length; i++) {
   var code = character[i];
   native1 += String.fromCharCode(parseInt("0x" + code.substring(0, 4)));
   if (code.length > 4) {
    native1 += code.substring(4, code.length);
   }
  }
  return native1
 },