//utils資料夾下websoctet.js檔案

var url = 'ws://地址埠';

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"}')
  });
//接受訊息
  wx.onSocketMessage(func);
}

//傳送訊息
function send(msg) {
  wx.sendSocketMessage({ data: msg });
}
module.exports = {
  connect: connect,
  send: send

}

//具體頁面.js檔案內容：

var websocket = require('../../utils/websocket.js');

  //事件處理函式
  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
    //呼叫應用例項的方法獲取全域性資料
    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"}');
      })
    })
  },

//下面方法很好玩，因為使用的伺服器 是開源的php伺服器，所以微信小程式接收到的聊天室中文內容是ASCII編碼，所以經過此方法可以轉換。哈
  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
  },