【微信小程序】聊天界面代码

1. chat.wxml

    
    
    
    
    
    
    
     
     
     {{name}}
     
    
    {{time}}
     
      
      
     
       
       
        
         
        
        
         
        
        {{item.content}}
       
     
       
       
        {{item.content}}
        
         
        
        
         
        
       
     
      
      
     
      
      
     
   
     
      
      
     
    

2. chat.js

const domain_ws = require('../../utils/domain.js').domain_ws
const domain = require('../../utils/domain.js').domain
var SocketTask = ''
const app = getApp();
var inputVal = '';
var msgList = [];
var windowWidth = wx.getSystemInfoSync().windowWidth;
var windowHeight = wx.getSystemInfoSync().windowHeight;
var keyHeight = 0;
  
/**
 * 初始化数据
 */
  function initData(that) {
    inputVal = '';
    msgList = []
    that.setData({
    msgList,
    inputVal
    })
  }
    
  Page({
    
    /**
    * 页面的初始数据
    */
    data: {
      scrollHeight: '100vh',
      inputBottom: 0,
      avatar_left: '',
      avatar_right: '',
      name: '',
      msg: '',
      interval: '',
      time: '',
      loading: true
    },
    
    /**
    * 生命周期函数--监听页面加载
    */
    onLoad: function(options) {
      initData(this);
    },
    
    /**
    * 生命周期函数--监听页面显示
    */
    onShow: function() {
      var n = 1
      var that = this
      wx.request({
        header: {
          'alexmisko-user': wx.getStorageSync('token')
        },
        url: domain + '/message/user',
        data:{
          senderId: wx.getStorageSync('userinfo').userId,
          receiverId: this.options.userId,
          page: 1,
          num: 5
        },
        success(res){
          console.log(res)
          res.data.data.records.forEach(function(e){
            if(n == 1){
              that.setData({
                time: e.createTime
              })
              n --;
            }
            if(e.senderId == wx.getStorageSync('userinfo').userId){
              msgList.unshift({
                speaker: 'customer',
                contentType: 'text',
                content: e.message
              })
            }else{
              msgList.unshift({
                speaker: 'server',
                contentType: 'text',
                content: e.message
              })
            }
            that.setData({
              msgList,
              loading: false
            });
          })
        }
      })
      console.log(wx.getStorageSync('token'))
      this.setData({
        avatar_right: wx.getStorageSync('userinfo').avatar,
        avatar_left: this.options.avatar,
        name: this.options.name
      })
      SocketTask = wx.connectSocket({
        url: domain_ws + '/ws/' + wx.getStorageSync('token'),
        success(res){
          console.log(res)
        }
      })
      SocketTask.onOpen((res) =>{
        console.log('连接打开成功')
        this.setData({
          interval: setInterval(this.heartbeat, 5000)
        })
      })
      SocketTask.onClose((res) =>{
        console.log('连接关闭成功')
      })
      SocketTask.onError((res) =>{
        console.log('连接报错')
      })
      SocketTask.onMessage((res) =>{
        console.log(res)
        msgList.push({
          speaker: 'server',
          contentType: 'text',
          content: JSON.parse(res.data).message
        })
        this.setData({
          msgList
        })
      })
    },

    heartbeat(){
      console.log("发送心跳")
      SocketTask.send({
        data: JSON.stringify(new this.MsgContent("keepalive", null, null)),
      })
    },
    
    /**
    * 发送点击监听
    */
    sendClick: function(e) {
      var that = this
      var msgContent = new this.MsgContent("word", this.options.userId, e.detail.value)
      SocketTask.send({
        data: JSON.stringify(msgContent),
        success(res){
          console.log(res)
          msgList.push({
            speaker: 'customer',
            contentType: 'text',
            content: e.detail.value
          })
          inputVal = '';
          that.setData({
            msgList,
            inputVal
          });
        }
      })
    },
    
    /**
    * 退回上一页
    */
    toBackClick: function() {
    wx.navigateBack({})
    },

    input(e){
      this.setData({
        msg: e.detail.value
      })
    },

  
    MsgContent: function(type, receiverId, message){
      this.type = type,
      this.receiverId = receiverId,
      this.message = message
    },

    onUnload(){
      console.log("退出")
      // SocketTask.close({
      // })
      clearInterval(this.data.interval)
    }
})

3. chat.wxss

    /* pages/contact/contact.wxss */
     
    page {
      background-color: black;
     }
      
     .inputRoom {
      width: 100vw;
      height: 16vw;
      background-color: black;
      position: fixed;
      bottom: -10px;
      display: flex;
      align-items: center;
      z-index: 20;
     }
      
     input {
      width: 76vw;
      height: 9.33vw;
      background-color: #262626;
      border-radius: 40rpx;
      margin-left: 2vw;
      padding: 0 3vw;
      font-size: 28rpx;
      color: #444;
     }
      
     .leftMsg {
      font-size: 35rpx;
      color: #444;
      line-height: 7vw;
      padding: 2vw 2.5vw;
      background-image: linear-gradient(to right, #da22ff, #9733ee);
      margin-left: -1.6vw;
      border-radius: 10rpx;
      z-index: 10;
     }
      
     .rightMsg {
      font-size: 35rpx;
      color: #444;
      line-height: 7vw;
      padding: 2vw 2.5vw;
      background-image: linear-gradient(to left, #ec008c, #fc6767);
      margin-right: -1.6vw;
      border-radius: 10rpx;
      z-index: 10;
     }