微信小程序接入騰訊雲IM即時通訊（發送消息開發步驟）

微信小程序接入騰訊雲IM即時通訊（聊天窗口）

1.效果圖：

- 2.功能點 ：
1.佈局要分左右兩邊佈局，如果是自己爲發送消息方，都在右邊，對方發送的消息在左邊。
2.騰訊雲返回的是時間戳，需要轉換一下時間，騰訊雲是沒有返回頭像的，需要單獨獲取並且設置自己跟對方的頭像。
3.發送的消息分爲自定義消息跟普通文本消息，帶房源圖片跟價格和小區名稱的是自定義的消息，從房源詳情進入聊天就自動發送，普通文本消息則在底部欄發送。
4.獲取聊天的歷史記錄，下拉上翻歷史記錄，這裏沒有做本地緩存，是做了每次進入都拉取一次聊天的歷史記錄的操作。

WXML代碼

<scroll-view class='chat' id="chat" style="height:{{height}}px;" scroll-y style='padding-bottom:49px;' >
  <block  wx:for="{{myMessages}}" wx:key="{{index}}">
    <view class='chat-time' wx:if="{{item.time != ''}}">{{item.msgTime}}</view>
    <view class="chat-item flex-wrap {{item.isSelfSend ? 'house' : ''}}" wx:if='{{item.type != ""}}' bindtap='linkDetail'  data-id="{{item.id}}" data-type="{{item.type}}">
        <view class='avatar'>
          <image style="width:40px;height:40px;border-radius:50%;" mode= "scaleToFill" src="{{item.avatar}}"></image>
        </view>
        <view class='content ' style="width:520rpx;">
          <image class='img' style="width:100%;height:120px;" mode= "scaleToFill"  src="{{item.img == '' ? houseDefault : item.img}}"></image>
          <view class='info'>
            <view class='info-name'>{{item.name}}</view>
            <view class='info-title'>{{item.msgContent}}</view>
            <view class='flex-wrap'>
              <view class='flex-item3'>
                <view class='info-price'>{{item.price}}</view>
              </view>
              <view class='flex-item'>
                <view class='info-type'>{{item.type}}</view>
              </view>
            </view>
          </view>
        </view>
    </view>
    <view class="chat-item flex-wrap {{item.isSelfSend ? 's' : ''}}" wx:if='{{item.type == ""}}'>
        <view class='avatar'>
          <image style="width:40px;height:40px;border-radius:50%;" mode= "scaleToFill" src="{{item.avatar}}"></image>
        </view>
        <view class='content '>{{item.msgContent}}</view>
    </view>
  </block>
</scroll-view>

<view class='footer-h'></view>
<view class='chat-footer flex-wrap'>
   <view class='flex-item ' bindtap='send1'> <text class="iconfont icon-yuyin" style='vertical-align: 0;padding-right:0; '></text></view>
   <view class='flex-item5'>
      <input class='input'  bindinput="bindKeyInput" value="{{inputValue}}" placeholder="對ta發送消息"/>
   </view>
   <view class='flex-item2 send' bindtap='bindConfirm'>發送</view>
</view>

WXSS代碼

.flex-wrap.s ,.house{
  flex-direction:row-reverse;

}
.h49{
  width: 100%;
  height: 49px;
}
.chat-item.flex-wrap.s{
  margin: 20px 10px 20px 0px;

}
.chat-item.flex-wrap{
  line-height: 20px;
  height: auto;
  margin: 20px 0px 20px 10px;

}
.chat-footer{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 49px;
  background: #ffffff;
}
.send{
  width: 100%;
  height: 49px;
  line-height: 49px;
  text-align: center;
  background: #69BEFF;
  color: #ffffff;
  font-size: 16px;
}
.icon-yuyin::before{
  font-size: 70rpx;
  color: #7F8389;
  display: block;
  height: 49px;
  line-height: 49px;
  text-align: center;
}
.input{
  height: 49px;
  line-height: 49px;
  font-size: 13px;
}
.avatar{
  width: 40px;
  height: 40px;
  background: #69BEFF;
  border-radius:50%;
  text-align: center;
  line-height: 40px;
  color: #ffffff;
}
.chat-item.flex-wrap .content{
  background: #ffffff;
  margin-left: 10px;
  padding:12px;
  border-radius:10px; 
  width: auto;
  max-width: 480rpx;
  font-size: 15px;
  text-align: justify;
}
.chat-item.flex-wrap.house{
  margin-right: 10px;
}

.chat-item.flex-wrap.s .content{
  margin-right: 10px;
  background: #69BEFF;
  color: #ffffff;
}
.chat-item.flex-wrap.house .content{
  margin-right: 10px;
  padding: 0;
  width: 520rpx;

}
.content .img{
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}
.chat-time{
  width: 80px;
  height: 21px;
  line-height: 21px;
  background: #CECECE;
  color: #ffffff;
  font-size: 12px;
  margin: 20px auto 0px;
  text-align: center;
  border-radius:5px;

}
.content .info{
  padding:0 20rpx 20rpx;
}
.info-price{
  color: #E93D26;
  font-size: 14px;
}
.info-title{
  color: #999999;
  font-size: 12px;
}
.info-type{
  width: 50px;
  height: 18px;
  line-height: 18px;
  color: #ffffff;
  font-size: 12px;
  background: #CECECE;
  text-align: center;
  border-radius: 2px;

}
.footer-h{
  height: 49px;
  width: 100%;
}

js代碼


var webim = require('../../utils/webim.js');
var webimhandler = require('../../utils/webim_handler.js');
const app = getApp()
Page({

  /**
   * 頁面的初始數據
   */
  data: {
    noData: app.data.imageUrl + '/no-msg.png',
    houseDefault: app.data.imageUrl + '/msg-default.png',
    inputValue:'',//發送的文字消息內容
    myMessages: [],//消息
    selToID:0,
    scrollTop: 0,
    houseId:'',//房源id
    type:'',//房源類型
    height:'',
    complete:0,//默認爲有歷史記錄可以拉取
    is_lock:true//發送消息鎖
  },

  /**
   * 生命週期函數--監聽頁面加載
   */
  onLoad: function (options) {

    var that = this;

    that.setData({
      height: wx.getSystemInfoSync().windowHeight
    })

    if(options){
      if(options.id){//設置會話列表傳參過來的爲好友id
        that.setData({
          selToID: options.id
        })
        wx.setNavigationBarTitle({
          title: options.name
        })
      }else if (!options.dockingname){//非經紀人角色,私聊賬號爲推薦經紀人賬號
        that.setData({
          selToID: app.data.userInfo.agent_member_id.toString(),
          houseId: options.houseid,
          type:options.type
        })
        wx.setNavigationBarTitle({
          title: '置業顧問' + app.data.userInfo.agent_name
        })
        //拉取所需要自定義的消息數據發送
        that.createhousemsg();

      }else{
        that.setData({
          selToID: options.agent_member_id ,
          houseId: options.houseid,
          type: options.type
        })
        wx.setNavigationBarTitle({
          title: '盤方顧問' + options.dockingname
        })
        //拉取所需要自定義的消息數據發送
        that.createhousemsg();
      }
    }

  },
  onShow:function () {
    var that = this;    
    wx.setStorageSync('msgKey', '')
    wx.setStorageSync('lastMsgTime', '')
    webimhandler.init({
      accountMode: app.data.Config.accountMode
      , accountType: app.data.Config.accountType
      , sdkAppID: app.data.Config.sdkappid
      , selType: webim.SESSION_TYPE.C2C//私聊
      , agent_member_id: app.data.userInfo.id
      , id: that.data.selToID  
      , name: app.data.userInfo.agent_name
      , icon: app.data.userInfo.agent_pic,
      that: that
    });
    if (webim.checkLogin()) {
      webimhandler.getC2CHistoryMsgs();
    } else {
      webimhandler.sdkLogin(that,app, this.data.selToID,()=> {
        //獲取聊天曆史記錄
        webimhandler.getC2CHistoryMsgs();

      });
    }

  },
  //創建自定義房源消息體
  createhousemsg:function(){
    var that = this;
    var param = {
      app_token: app.data.userInfo.app_token,
      id: that.data.houseId,
      type: that.data.type
    }
    app.request('get', 'createhousemsg', that, param,
      (data) => {
          //這裏的data.array.MsgContent爲獲取到需要發送的消息體字段
        webimhandler.sendCustomMsg(data.array.MsgContent, (data)=>{
          var myMessages = that.setDatas(data)
            that.setData({
              myMessages: myMessages,
            })
          setTimeout(function () {
            that.pageScrollToBottom()
          }, 100)
        })
      }, () => {
        setTimeout(function () {
          login.login(app)
        }, 500)
      }, () => {
        wx.navigateBack({
          delta: 1
        })
        return;
      })
  },

  //獲取普通文本消息
  bindKeyInput:function(e){
    var that = this;
     that.setData({
      inputValue:e.detail.value
    })
  },
  // 發送普通文本消息
  bindConfirm: function(e) {
    var that = this;

    if(that.data.is_lock){
      that.setData({
        is_lock:false
      })
      if (that.data.inputValue.length == 0) {
        wx.showToast({
          title: '消息不能爲空!',
          icon:'none'
        })
        that.setData({
          is_lock: true
        })
        return;
      }
      var content = that.data.inputValue;
      if (!content.replace(/^\s*|\s*$/g, '')) return;
      webimhandler.onSendMsg(content)
    }
  },
  // 清除輸入框
  clearInput:function(e){
    this.setData({
      inputValue:''
    })
  },
  /**
   * 下拉上翻歷史記錄
   */
  onPullDownRefresh: function () {
    if (this.data.complete == 0){


      wx.showLoading({
        title: '加載歷史記錄中...',
      })
      var that = this;
      webimhandler.getPrePageC2CHistoryMsgs()
      wx.stopPullDownRefresh();
    }else{
      wx.showToast({
        title: '沒有更多歷史記錄了',
        icon:'none'
      })
    }
  },

  // 滾動最底部
  pageScrollToBottom: function () {
      wx.createSelectorQuery().select('#chat').boundingClientRect(function (rect) {
        // 使頁面滾動到底部
        wx.pageScrollTo({
          scrollTop: rect.bottom
        })
      }).exec()
  },
  // 跳轉房源詳情
  linkDetail:function(e){
    switch (e.currentTarget.dataset.type){
      case '新房':
        wx.navigateTo({
          url: '../newHouseDetail/newHouseDetail?id=' + e.currentTarget.dataset.id,
        })
        break;
      case '二手房':
        wx.navigateTo({
          url: '../useroomDetail/useroomDetail?id=' + e.currentTarget.dataset.id,
        })
        break;
      case '租房':
        wx.navigateTo({
          url: '../rentroomDetail/rentroomDetail?id=' + e.currentTarget.dataset.id,
        })
        break;
      case '小區':
        wx.navigateTo({
          url: '../unitDetail/unitDetail?id=' + e.currentTarget.dataset.id,
        })
        break;
    }
  },
  setDatas: function (data){
    var that = this;
    var myMessages = data.map((item, index) => {

      switch (item.type) {
        case 1:
          item.type = '二手房'
          break;
        case 2:
          item.type = '租房'
          break;
        case 3:
          item.type = '小區'
          break;
        case 4:
          item.type = '新房'
          break;
      }
      if (item.img == '') {
        item.img = that.data.houseDefault
      }
      return item;
    })

    return myMessages;

  }



})

發送自定義消息

//發送消息(自定義消息)
function sendCustomMsg(msgs,callback) {
  var data = msgs.Data;//數據
  var desc = msgs.Desc;//描述
  var ext = msgs.Ext;//拓展字段
  var msgLen = webim.Tool.getStrBytes(data);
  if (msgs.length < 1) {
    alert("發送的消息不能爲空!");
    return;
  }
  var maxLen, errInfo;
  if (selType == webim.SESSION_TYPE.C2C) {
    maxLen = webim.MSG_MAX_LENGTH.C2C;
    errInfo = "消息長度超出限制(最多" + Math.round(maxLen / 3) + "漢字)";
  } else {
    maxLen = webim.MSG_MAX_LENGTH.GROUP;
    errInfo = "消息長度超出限制(最多" + Math.round(maxLen / 3) + "漢字)";
  }
  if (msgLen > maxLen) {
    alert(errInfo);
    return;
  }
  if (!selSess) {
    selSess = new webim.Session(selType, id, name, icon, Math.round(new Date().getTime() / 1000));
  }
  var msg = new webim.Msg(selSess, true, -1, -1, -1, id, 0, name);
  var custom_obj = new webim.Msg.Elem.Custom(data, desc, ext);

  msg.addCustom(custom_obj);
  msg.sending = 1;
  // //調用發送消息接口
  webim.sendMsg(msg, function (resp) {
    if (selType == webim.SESSION_TYPE.C2C) {
      // 處理消息
      handlderMsg(msg,false);
      // 獲取頭像
      getMyAvatar(id, agent_member_id,function(){
        callback(currentMsgsArray)
      });
    }
    that.msginformagent(id, msgs)
    webim.Log.info("發消息成功");
  }, function (err) {
    webim.Log.info("發消息失敗");

  });
}

// 解析消息（普通文本消息，自定義消息）
function convertMsg(msg, prepend) {
    var that = this;
    var elems, elem, type, content, isSelfSend, ifromAccount;
    elems = msg.getElems();
    isSelfSend = msg.getIsSend(); //消息是否爲自己發的 true是自己發送，
    ifromAccount = msg.fromAccount
    for (var i in elems) {
        var currentMsg = {}; 
        elem = elems[i];
        type = elem.getType();
        content = elem.getContent();
        switch (type) {
            case webim.MSG_ELEMENT_TYPE.TEXT://文本消息
                var msgContent = convertTextMsgToHtml(content);
                var msgTime = msg.getTime();//得到當前消息發送的時間
                //解析時間
              convertTime(msgTime, function (data) {
              currentMsg.id = ifromAccount;//房源標題                
              currentMsg.msgContent = msgContent;//當前消息的內容
              currentMsg.img = '';
              currentMsg.msgTime = data;
              currentMsg.name = ''
              currentMsg.price = '';
              currentMsg.isSelfSend = isSelfSend;
              currentMsg.ifromAccount = ifromAccount;
              currentMsg.type = '';
                if (prepend){
                  historyMsgsArray.push(currentMsg)

                }else{
                  currentMsgsArray.push(currentMsg);
                }

            })

            break;
            case webim.MSG_ELEMENT_TYPE.CUSTOM://自定義消息
              var msgContent = convertCustomMsgToHtml(content);
              var msgTime = msg.getTime();//得到當前消息發送的時間
                  if (msgContent.data == ''){

                  }else{
                    msgContent = JSON.parse(msgContent.data)
                  }

                convertTime(msgTime, function (data) {
                  currentMsg.id = msgContent.id//房源標題
                  currentMsg.img = msgContent.img//房源圖片
                  currentMsg.msgTime = data;//消息時間                
                  currentMsg.name = msgContent.name //樓盤名稱
                  currentMsg.price = msgContent.price //價格
                  currentMsg.type = msgContent.type //類型（1二手房，2租房，3小區，4新房）
                  currentMsg.isSelfSend = isSelfSend;//默認右邊
                  currentMsg.ifromAccount = ifromAccount;
                  if (prepend){
                    historyMsgsArray.push(currentMsg)
                  }else{
                    currentMsgsArray.push(currentMsg);
                  }
                })


            break;
        }


    }

}

// 解析自定義消息
function convertCustomMsgToHtml(content) {
  var data = content.getData();
  var desc = content.getDesc();
  var ext = content.getExt();
  var content = {
    data:data,
    desc: desc,
    ext: ext
  }
  return content;
}

發送普通文本消息

//發送消息(普通消息)
function onSendMsg(msg) {

    //獲取消息內容
    var msgtosend = msg;
    var msgLen = webim.Tool.getStrBytes(msg);
    // 創建會話對象
    if (!selSess) {
        selSess = new webim.Session(selType, id, name, icon, Math.round(new Date().getTime() / 1000));
    }
    var isSend = true;//是否爲自己發送
    var seq = -1;//消息序列，-1表示sdk自動生成，用於去重
    var random = Math.round(Math.random() * 4294967296);//消息隨機數，用於去重
    var msgTime = Math.round(new Date().getTime() / 1000);//消息時間戳
    var subType = webim.C2C_MSG_SUB_TYPE.COMMON;//消息子類型c2c消息時，參考c2c消息子類型對象：webim.C2C_MSG_SUB_TYPE 
    //loginInfo.identifier消息發送者賬號,loginInfo.identifierNick消息發送者暱稱
    var msg = new webim.Msg(selSess, isSend, seq, random, msgTime, id, subType, name );
    //解析文本和表情
    var expr = /\[[^[\]]{1,3}\]/mg;
    var emotions = msgtosend.match(expr);
    if (!emotions || emotions.length < 1) {
        var text_obj = new webim.Msg.Elem.Text(msgtosend);
        msg.addText(text_obj);
    } else {//有表情

    }

    webim.sendMsg(msg, function (resp) {
        if (selType == webim.SESSION_TYPE.C2C) {//私聊時，在聊天窗口手動添加一條發的消息

          handlderMsg(msg,false);
          // 設置雙方頭像
          getMyAvatar(id, agent_member_id, function () {
            that.clearInput();
            var myMessages = that.setDatas(currentMsgsArray);
            that.setData({
              myMessages: myMessages,
              is_lock: true
            })

            // setTimeout(function () {
              that.pageScrollToBottom()
            // }, 100)
          });

          that.msginformagent(id, msgtosend)          
          webim.Log.info("發消息成功");
        }


    }, function (err) {
        webim.Log.error("發消息失敗:" + err.ErrorInfo);
    });
}


//解析文本消息元素
function convertTextMsgToHtml(content) {
    return content.getText();
}

統一處理文本消息，自定義消息

// 解析消息（普通文本消息，自定義消息）
function convertMsg(msg, prepend) {
    var that = this;
    var elems, elem, type, content, isSelfSend, ifromAccount;
    elems = msg.getElems();
    isSelfSend = msg.getIsSend(); //消息是否爲自己發的 true是自己發送，
    ifromAccount = msg.fromAccount
    for (var i in elems) {
        var currentMsg = {}; 
        elem = elems[i];
        type = elem.getType();
        content = elem.getContent();
        switch (type) {
            case webim.MSG_ELEMENT_TYPE.TEXT://文本消息
                var msgContent = convertTextMsgToHtml(content);
                var msgTime = msg.getTime();//得到當前消息發送的時間
                //解析時間
              convertTime(msgTime, function (data) {
              currentMsg.id = ifromAccount;//房源標題                
              currentMsg.msgContent = msgContent;//當前消息的內容
              currentMsg.img = '';
              currentMsg.msgTime = data;
              currentMsg.name = ''
              currentMsg.price = '';
              currentMsg.isSelfSend = isSelfSend;
              currentMsg.ifromAccount = ifromAccount;
              currentMsg.type = '';
                if (prepend){
                  historyMsgsArray.push(currentMsg)

                }else{
                  currentMsgsArray.push(currentMsg);
                }

            })

            break;
            case webim.MSG_ELEMENT_TYPE.CUSTOM://自定義消息
              var msgContent = convertCustomMsgToHtml(content);
              var msgTime = msg.getTime();//得到當前消息發送的時間
                  if (msgContent.data == ''){

                  }else{
                    msgContent = JSON.parse(msgContent.data)
                  }

                convertTime(msgTime, function (data) {
                  currentMsg.id = msgContent.id//房源標題
                  currentMsg.img = msgContent.img//房源圖片
                  currentMsg.msgTime = data;//消息時間                
                  currentMsg.name = msgContent.name //樓盤名稱
                  currentMsg.price = msgContent.price //價格
                  currentMsg.type = msgContent.type //類型（1二手房，2租房，3小區，4新房）
                  currentMsg.isSelfSend = isSelfSend;//默認右邊
                  currentMsg.ifromAccount = ifromAccount;
                  if (prepend){
                    historyMsgsArray.push(currentMsg)
                  }else{
                    currentMsgsArray.push(currentMsg);
                  }
                })


            break;
        }


    }

}

發送消息成功之後，就需要監聽新消息，更新消息的未讀數了

//監聽新消息(私聊(包括普通消息、全員推送消息)，普通羣(非直播聊天室)消息)事件
//newMsgList 爲新消息數組，結構爲[Msg]
function onMsgNotify(newMsgList) {
    var newMsg;
    //獲取所有聊天會話

    for (var j in newMsgList) {//遍歷新消息
        newMsg = newMsgList[j];

        if (newMsg.getSession().id() == id) {//爲當前聊天對象的消息
            selSess = newMsg.getSession();
            handlderMsg(newMsg, false);
            currentMsgsArray = currentMsgsArray.map((item, index) => {
              if (!item.isSelfSend) {
                item.avatar = myAvatar
              } else {
                item.avatar = friendAvatar
              }
              return item;
            })
            var myMessages = that.setDatas(currentMsgsArray);
            that.setData({
              myMessages: myMessages,

            })
            setTimeout(function () {
              if (that.data.is_chat){
                that.pageScrollToBottom()
              }
            }, 100)

        }
    }
    getUnread()

}


//更新消息未讀數
function getUnread(){
  var sess= {};
  var sessMap = webim.MsgStore.sessMap();
  if (that.data.contactList) {
    // 更新消息的未讀數
    for (var i in sessMap) {
      sess = sessMap[i];
      var contactList = that.data.contactList.map((item, index) => {
        if (item.To_Account == sess.id()) {
          item.UnreadMsgCount = sess.unread()
        }
        return item;
      })
      that.setData({
        contactList: contactList
      })
        // 獲取最新的會話消息
        webim.getRecentContactList({
          'Count': 10 //最近的會話數 ,最大爲 100
        }, function (resp) {
          var MsgShow = resp.SessionItem.filter((item, index) => {
            if (item.To_Account == sess.id()) return item;
          })

          var contactList = that.data.contactList.map((item, index) => {
            if (item.To_Account == sess.id()) {
              // 獲取最新消息
              if (MsgShow[0].MsgShow == '[其他]'){
                MsgShow[0].MsgShow = '[房源信息]'
              }
              item.MsgShow = MsgShow[0].MsgShow

            }
            return item;
          })

          that.setData({
            contactList: contactList
          })

        })

      }
  }
}

發送消息就到這裏了，歷史記錄下章講

微信小程序接入騰訊雲IM即時通訊（發送消息開發步驟）

微信小程序接入騰訊雲IM即時通訊（聊天窗口）

WXML代碼

WXSS代碼

js代碼

發送自定義消息

發送普通文本消息

統一處理文本消息，自定義消息

發送消息成功之後，就需要監聽新消息，更新消息的未讀數了

Element ui Table 嵌套單選多選阻止@row-click事件冒泡

微信小程序利用騰訊雲IM即時通訊發送文字+表情開發

兩個數組判斷含有相同項並添加K：V屬性值

JQuery + H5頁面多個倒計時處理方式

Taro框架中開發H5使用微信分享

Mac下配置sublime實現LaTeX

https://yachay.unat.edu.pe/blog/index.php?comment_area=format_blog&comment_component=blog&comment_co

linux以太網驅動總結