微信小程序怎么實現聊天功能

這篇文章將為大家詳細講解有關微信小程序怎么實現聊天功能，小編覺得挺實用的，因此分享給大家做個參考，希望大家閱讀完這篇文章后可以有所收獲。

初始化滾動條高度

var keyHeight = 0;

數據格式

const CHAT_DATA=[ {  type:0,//0客服1用戶  content:'歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎歡迎',  headImg:'../../assets/common/images/headHortrait.jpeg',//頭像  creatTime:'2019-01-01',//創建時間  contentType:'text' }, {  type: 0,//0客服1用戶  content: '1111111',  headImg: '../../assets/common/images/headHortrait.jpeg',//頭像  creatTime: '2019-01-01',//創建時間  contentType: 'text' }, {  type: 1,//0客服1用戶  content: '222222',  headImg: '../../assets/common/images/headHortrait.jpeg',//頭像  creatTime: '2019-01-01',//創建時間  contentType: 'text' }, {  type: 0,//0客服1用戶  content: '333333',  headImg: '../../assets/common/images/headHortrait.jpeg',//頭像  creatTime: '2019-01-01',//創建時間  contentType: 'text' }, {  type: 1,//0客服1用戶  content: '4444444',  headImg: '../../assets/common/images/headHortrait.jpeg',//頭像  creatTime: '2019-01-01',//創建時間  contentType: 'text', }, {  type: 0,//0客服1用戶  content: 'http://tmp/wxc79c66d8b0ed19a8.o6zAJs6QE8L8FKq645ts4e3LoKzI.pGakaVHKmbQ3160aa57e2bf33cb576fbabf691cd890b.durationTime=3706.aac',  headImg: '../../assets/common/images/headHortrait.jpeg',//頭像  creatTime: '2019-01-01',//創建時間  contentType: 'voice',  duration: '3706', },{  type: 1,//0客服1用戶  content: 'http://tmp/wxc79c66d8b0ed19a8.o6zAJs6QE8L8FKq645ts4e3LoKzI.pGakaVHKmbQ3160aa57e2bf33cb576fbabf691cd890b.durationTime=3706.aac',  headImg: '../../assets/common/images/headHortrait.jpeg',//頭像  creatTime: '2019-01-01',//創建時間  contentType: 'voice',  duration:'3706' }, {  type: 1,//0客服1用戶  content: 'https://cache.yisu.com/upload/information/20201210/269/44185.jpg',  headImg: '../../assets/common/images/headHortrait.jpeg',//頭像  creatTime: '2019-01-01',//創建時間  contentType: 'img' }, {  type: 1,//0客服1用戶  content: 'https://cache.yisu.com/upload/information/20201210/269/44185.jpg',  headImg: '../../assets/common/images/headHortrait.jpeg',//頭像  creatTime: '2019-01-01',//創建時間  contentType: 'img' }];

wxml對話框

<block wx:key wx:for='{{chatData}}' wx:for-index="index">   <!-- 單個消息1 客服發出（左） -->   <view wx:if='{{item.type==0}}' id='msg-{{index}}' class="contentLeft" style=''>    <view class="head">      <image class="headImg" src='{{item.headImg}}' mode='widthFix'></image>    </view>    <view class='leftMsg' wx:if="{{item.contentType==='text'}}">{{item.content}}</view>    <view class='leftMsg' wx:if="{{item.contentType==='voice'}}" data-duration="{{item.content}}">{{item.duration}}s</view>    <view class='leftMsg img' wx:if="{{item.contentType==='img'}}"><image src="{{item.content}}" data-src="{{item.content}}" mode='widthFix' bindtap="onPreview"/></view>   </view>   <!-- 單個消息2 用戶發出（右） -->   <view wx:else id='msg-{{index}}' class="contentRight">    <view class='rightMsg' wx:if="{{item.contentType==='voice'}}" data-duration="{{item.duration}}" bindtap="playRecord" >{{item.duration}}"<van-icon name="../../../assets/common/icon/voice-r.png"  /></view>    <view class='rightMsg' wx:if="{{item.contentType==='text'}}">{{item.content}}</view>    <view class='rightMsg img' wx:if="{{item.contentType==='img'}}"><image src="{{item.content}}" data-src="{{item.content}}" mode='widthFix' bindtap="onPreview"/></view>     <view>      <image class="headImg" src='{{item.headImg}}' mode='widthFix'></image>    </view>   </view>  </block>

wxml底部輸入框

<view class='inputRoom' style='bottom: {{inputBottom}};height: {{bottomHeight}}'>  <van-row class="bottomRow">   <van-col span="2"wx:if="{{show}}"> <van-icon bindtap="startRecord" class="iconfont icon" class-prefix='icon' size="40rpx" name="yuyin" ></van-icon></van-col>    <van-col span="2" wx:if="{{!show}}"> <van-icon bindtap="startRecord" class="iconfont icon" class-prefix='icon' size="40rpx" name="fabiaowenzhang" ></van-icon></van-col>   <van-col span="18" wx:if="{{show}}"> <input bindconfirm='sendClick'bind:input="inputValue" adjust-position='{{false}}' value='{{inputVal}}' confirm-type='send' bindfocus='focus' bindblur='blur'></input></van-col>   <van-col span="18" wx:if="{{!show}}"> <view class="holdTape" bind:touchstart="startTalk" bind:touchend='stopRecord'>按住請說話</view></van-col>   <van-col span="2"><van-icon class="iconfont icon" class-prefix='icon' size="40rpx" name='biaoqing' bindtap="getEmoji"></van-icon></van-col>   <van-col span="2"><van-uploader use-slot accept='image' bind:after-read="uploadeImg"> <van-icon class="iconfont icon" class-prefix='icon' size="40rpx" name='icon02' ></van-icon></van-uploader></van-col>  </van-row>   <view wx:if="{{showEmoji}}" class="emoji">   <emoji bind:clickEmoji="clickEmoji" data-key="inputVal" value="{{inputVal}}" />  </view> </view></view><view class="recordDailog" wx:if="{{showDailog}}"  ><view class="show"> <image src="../../assets/common/images/record.png"></image> <text>{{toastTitle}}</text></view>

css

#page{ height: 90%;overflow-y: auto;}.content{ background: white;}.inputRoom { width: 100vw; /* height: 16vw; */ border-top: 1px solid #cdcdcd; position: fixed; bottom: 0; display: flex; align-items: center; z-index: 20; background: white; flex-direction: column;}.bottomRow{ width: 100%; height: 16vw;display: flex;align-items: center;flex-direction: row}.bottomRow .van-row{ width: 100%;}.emoji{ height: 30vw;}input {width: 90%;height: 9.33vw;background-color: #EEF4FA;border-radius: 6rpx;font-size: 28rpx;color: #444;padding: 0 3%;margin-left: 2%;}.leftMsg { font-size: 26rpx; color: #333333;line-height: 6vw;padding: 2vw 2.5vw;background-color: #EEF4FA; border-radius: 10rpx; z-index: 10;}.rightMsg { font-size: 26rpx; color: white; line-height: 6vw; padding: 2vw 2.5vw; background-color: #496DFF; border-radius: 10rpx; z-index: 10;}.chatFrame{ background: white; height: 100%}.icon{ line-height: 8vw;}.head{ display: flex; align-items: center}.headImg{ border-radius: 50%; width: 60rpx;height: 60rpx;}.holdTape{ width: 90%;height: 9.33vw;background-color: #EEF4FA;border-radius: 6rpx;padding: 0 3%;margin-left: 2%;display: flex;align-items: center;justify-content: center;}.recordDailog{ -webkit-transition-duration: 300ms;transition-duration: 300ms;z-index: 1000;position: fixed;top: 50%;left: 50%;width: -webkit-fit-content;width: fit-content;-webkit-transform: translate(-50%,-50%);transform: translate(-50%,-50%);max-width: var(--toast-max-width,70%);}.show{width: var(--toast-default-width,90px);min-height: var(--toast-default-min-height,90px);padding: var(--toast-default-padding,16px);display: flex;-webkit-flex-direction: column;flex-direction: column;-webkit-align-items: center;align-items: center;-webkit-justify-content: center;justify-content: center;box-sizing: initial;color: var(--toast-text-color,#fff);font-size: var(--toast-font-size,14px);line-height: var(--toast-line-height,20px);white-space: pre-wrap;word-wrap: break-word;background-color: var(--toast-background-color,rgba(50,50,51,.88));border-radius: var(--toast-border-radius,4px);}.show image{ width: 24px; height: 24px}image{ /* max-width: 88vw;max-height: 400rpx; */width: 100%}.img{background: none;width: 90%}.contentRight{ display: flex; justify-content: flex-end; padding: 2vw 2vw 2vw 11vw;width: 86%;}.contentLeft{ display: flex; padding: 2vw 11vw 2vw 2vw;width: 86%;}

js

// pages/contact/contact.jsconst { pageFunc} = require('../../utils/util.js');const app = getApp();var windowWidth = wx.getSystemInfoSync().windowWidth;var windowHeight = wx.getSystemInfoSync().windowHeight;var keyHeight = 0;const { CHAT_DATA}=require("../../data/customerService.js");import Toast from '../../components/vant/toast/toast';const recorderManager = wx.getRecorderManager();const innerAudioContext = wx.createInnerAudioContext();const db = wx.cloud.database();/** * 初始化數據 *//** * 計算msg總高度 */function calScrollHeight(that, keyHeight) { var query = wx.createSelectorQuery(); query.select('.scrollMsg').boundingClientRect(function(rect) { }).exec();}Page({ /**  * 頁面的初始數據  */ data: {  scrollHeight: '100vh',  inputVal:"",  inputBottom: 0,  chatData:[],  show:true,  showDailog:false,  bottomHeight:"18vw",  sendData:{},  pagination: {   pageSize: 5,   currentPage: 1,   total: 0,  },  showEmoji:false,  toastTitle:"錄音中...." }, /**  * 生命周期函數--監聽頁面加載  */ onLoad: function (options) {  // this.setData({  //  cusHeadIcon: app.globalData.userInfo.avatarUrl,  // });  const {   pagination  } = this.data  this.getData({ param: CHAT_DATA, pagination });   wx.pageScrollTo({    scrollTop: 1000   }) }, getData(params) {  const { chatData } = this.data;  const {   param,   pagination: {    pageSize = 10,    currentPage = 1   },  } = params;  this.setData({   pagination: { pageSize, currentPage }  });  const {   data,   pagination  } = pageFunc(param, currentPage, pageSize);  data.forEach((item) => {   if (item.duration) {    item.duration = Math.ceil(item.duration / 1000)   }  });   this.setData({    'chatData': data.concat(chatData)   }); }, startRecord(){//開始錄音 const {show}=this.data  if (show){   this.setData({    show: false,   })  }else{   this.setData({    show: true,   })  } }, startTalk(e){//開始說話  this.setData({   showDailog:true,  })  const options = {   duration: 60000,   sampleRate: 44100,   numberOfChannels: 1,   encodeBitRate: 192000,   format: 'aac',   frameSize: 50  }  recorderManager.start(options)  recorderManager.onStart((res) => {  }) }, stopRecord(){//停止說話  const that=this  this.setData({   showDailog:false,  })  recorderManager.stop();  recorderManager.onStop((res) => {   const { sendData, chatData } = that.data;   let { tempFilePath, duration, fileSize} = res   sendData.tempFilePathData=res   duration = Math.ceil(duration / 1000)   const data = { content: tempFilePath, duration , fileSize, contentType: 'voice', type: 1};   chatData.push(data);   wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {    // 使頁面滾動到底部    wx.pageScrollTo({     scrollTop: rect.bottom + 5000    })   }).exec();   that.setData({    'tempFilePath': tempFilePath,    sendData,    chatData,    scrollHeight: (windowHeight - 0) + 'px',    toView: 'msg-' + (chatData.length - 1),    inputBottom: '0px'   })  }) }, playRecord(e){//播放語音  const { currentTarget: { dataset: { duration } }}=e;  const { tempFilePath} = this.data  innerAudioContext.autoplay = true;  innerAudioContext.src = tempFilePath ,   innerAudioContext.onPlay(() => {    this.setData({     toastTitle: "播放中....",     showDailog: true,    })   })  innerAudioContext.onEnded((res) => {   this.setData({    toastTitle: "錄音中....",    showDailog: false,   })  })  innerAudioContext.onError((res) => {  });  innerAudioContext.play() }, uploadeImg(e){  const { file: { path,size:fileSize} } = e.detail;  const { chatData } = this.data;  const data = { content: path, fileSize, contentType: 'img', type: 1 };  chatData.push(data);  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {   // 使頁面滾動到底部   wx.pageScrollTo({    scrollTop: rect.bottom + 5000   })  }).exec()  this.setData({   chatData,   scrollHeight: (windowHeight - 0) + 'px',   toView: 'msg-' + (chatData.length - 1),   inputBottom:'0px'  }) }, getEmoji(){//獲取表情包  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {   // 使頁面滾動到底部   wx.pageScrollTo({    scrollTop: rect.bottom + 5000   })  }).exec() this.setData({  showEmoji:true,  bottomHeight:"48vw" }) }, clickEmoji: function (e) {//選擇表情包  const {   detail: {    value   },   currentTarget: {    dataset: {     key    }   }  } = e;  this.setData({   [key]: value  }) }, onPreview(e){  const {   currentTarget: {    dataset: {     src    }   }  } = e;  const urls = [src]  wx.previewImage({   current: src,   urls  }) }, /**  * 生命周期函數--監聽頁面顯示  */ onShow: function () { }, /**  * 頁面相關事件處理函數--監聽用戶下拉動作  */ onPullDownRefresh: function () {  let { pagination: { currentPage } } = this.data  this.getData({   param: CHAT_DATA,   pagination: {    pageSize: 5,    currentPage: currentPage + 1,   }  }); }, /**  * 頁面上拉觸底事件的處理函數  */ onReachBottom: function () { }, /**  * 獲取聚焦  */ inputValue(e){  const {detail:{value}}=e  this.setData({   inputVal:value  }) }, focus: function (e) {  const { chatData}=this.data  keyHeight = e.detail.height;  wx.pageScrollTo({   scrollTop: windowHeight - keyHeight  })  this.setData({   toView: 'msg-' + (chatData.length - 1),   inputBottom: keyHeight + 'px',   scrollHeight: (windowHeight - keyHeight) + 'px',   showEmoji:false,   bottomHeight: "18vw"  })  //計算msg高度  // calScrollHeight(this, keyHeight); }, //失去聚焦(軟鍵盤消失) blur: function (e) {  const { chatData } = this.data  this.setData({   scrollHeight: '100vh',   inputBottom: 0  })  this.setData({   toView: 'msg-' + (chatData.length - 1)  }) }, /**  * 發送點擊監聽  */ sendClick: function (e) {  const { chatData, scrollHeight}=this.data;  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {   // 使頁面滾動到底部   wx.pageScrollTo({    scrollTop: rect.bottom + 5000   })  }).exec()  chatData.push({   type: 1,   contentType: 'text',   content: e.detail.value,   headImg: '../../assets/common/images/headHortrait.jpeg',  })  this.setData({   chatData,   inputVal:''  }); }, /**  * 退回上一頁  */ toBackClick: function () {  wx.navigateBack({}) }})// pages/contact/contact.jsconst { pageFunc} = require('../../utils/util.js');const app = getApp();var windowWidth = wx.getSystemInfoSync().windowWidth;var windowHeight = wx.getSystemInfoSync().windowHeight;var keyHeight = 0;const { CHAT_DATA}=require("../../data/customerService.js");import Toast from '../../components/vant/toast/toast';const recorderManager = wx.getRecorderManager();const innerAudioContext = wx.createInnerAudioContext();const db = wx.cloud.database();/** * 初始化數據 *//** * 計算msg總高度 */function calScrollHeight(that, keyHeight) { var query = wx.createSelectorQuery(); query.select('.scrollMsg').boundingClientRect(function(rect) { }).exec();}Page({ /**  * 頁面的初始數據  */ data: {  scrollHeight: '100vh',  inputVal:"",  inputBottom: 0,  chatData:[],  show:true,  showDailog:false,  bottomHeight:"18vw",  sendData:{},  pagination: {   pageSize: 5,   currentPage: 1,   total: 0,  },  showEmoji:false,  toastTitle:"錄音中...." }, /**  * 生命周期函數--監聽頁面加載  */ onLoad: function (options) {  // this.setData({  //  cusHeadIcon: app.globalData.userInfo.avatarUrl,  // });  const {   pagination  } = this.data  this.getData({ param: CHAT_DATA, pagination });   wx.pageScrollTo({    scrollTop: 1000   }) }, getData(params) {  const { chatData } = this.data;  const {   param,   pagination: {    pageSize = 10,    currentPage = 1   },  } = params;  this.setData({   pagination: { pageSize, currentPage }  });  const {   data,   pagination  } = pageFunc(param, currentPage, pageSize);  data.forEach((item) => {   if (item.duration) {    item.duration = Math.ceil(item.duration / 1000)   }  });   this.setData({    'chatData': data.concat(chatData)   }); }, startRecord(){//開始錄音 const {show}=this.data  if (show){   this.setData({    show: false,   })  }else{   this.setData({    show: true,   })  } }, startTalk(e){//開始說話  this.setData({   showDailog:true,  })  const options = {   duration: 60000,   sampleRate: 44100,   numberOfChannels: 1,   encodeBitRate: 192000,   format: 'aac',   frameSize: 50  }  recorderManager.start(options)  recorderManager.onStart((res) => {  }) }, stopRecord(){//停止說話  const that=this  this.setData({   showDailog:false,  })  recorderManager.stop();  recorderManager.onStop((res) => {   const { sendData, chatData } = that.data;   let { tempFilePath, duration, fileSize} = res   sendData.tempFilePathData=res   duration = Math.ceil(duration / 1000)   const data = { content: tempFilePath, duration , fileSize, contentType: 'voice', type: 1};   chatData.push(data);   wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {    // 使頁面滾動到底部    wx.pageScrollTo({     scrollTop: rect.bottom + 5000    })   }).exec();   that.setData({    'tempFilePath': tempFilePath,    sendData,    chatData,    scrollHeight: (windowHeight - 0) + 'px',    toView: 'msg-' + (chatData.length - 1),    inputBottom: '0px'   })  }) }, playRecord(e){//播放語音  const { currentTarget: { dataset: { duration } }}=e;  const { tempFilePath} = this.data  innerAudioContext.autoplay = true;  innerAudioContext.src = tempFilePath ,   innerAudioContext.onPlay(() => {    this.setData({     toastTitle: "播放中....",     showDailog: true,    })   })  innerAudioContext.onEnded((res) => {   this.setData({    toastTitle: "錄音中....",    showDailog: false,   })  })  innerAudioContext.onError((res) => {  });  innerAudioContext.play() }, uploadeImg(e){  const { file: { path,size:fileSize} } = e.detail;  const { chatData } = this.data;  const data = { content: path, fileSize, contentType: 'img', type: 1 };  chatData.push(data);  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {   // 使頁面滾動到底部   wx.pageScrollTo({    scrollTop: rect.bottom + 5000   })  }).exec()  this.setData({   chatData,   scrollHeight: (windowHeight - 0) + 'px',   toView: 'msg-' + (chatData.length - 1),   inputBottom:'0px'  }) }, getEmoji(){//獲取表情包  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {   // 使頁面滾動到底部   wx.pageScrollTo({    scrollTop: rect.bottom + 5000   })  }).exec() this.setData({  showEmoji:true,  bottomHeight:"48vw" }) }, clickEmoji: function (e) {//選擇表情包  const {   detail: {    value   },   currentTarget: {    dataset: {     key    }   }  } = e;  this.setData({   [key]: value  }) }, onPreview(e){  const {   currentTarget: {    dataset: {     src    }   }  } = e;  const urls = [src]  wx.previewImage({   current: src,   urls  }) }, /**  * 生命周期函數--監聽頁面顯示  */ onShow: function () { }, /**  * 頁面相關事件處理函數--監聽用戶下拉動作  */ onPullDownRefresh: function () {  let { pagination: { currentPage } } = this.data  this.getData({   param: CHAT_DATA,   pagination: {    pageSize: 5,    currentPage: currentPage + 1,   }  }); }, /**  * 頁面上拉觸底事件的處理函數  */ onReachBottom: function () { }, /**  * 獲取聚焦  */ inputValue(e){  const {detail:{value}}=e  this.setData({   inputVal:value  }) }, focus: function (e) {  const { chatData}=this.data  keyHeight = e.detail.height;  wx.pageScrollTo({   scrollTop: windowHeight - keyHeight  })  this.setData({   toView: 'msg-' + (chatData.length - 1),   inputBottom: keyHeight + 'px',   scrollHeight: (windowHeight - keyHeight) + 'px',   showEmoji:false,   bottomHeight: "18vw"  })  //計算msg高度  // calScrollHeight(this, keyHeight); }, //失去聚焦(軟鍵盤消失) blur: function (e) {  const { chatData } = this.data  this.setData({   scrollHeight: '100vh',   inputBottom: 0  })  this.setData({   toView: 'msg-' + (chatData.length - 1)  }) }, /**  * 發送點擊監聽  */ sendClick: function (e) {  const { chatData, scrollHeight}=this.data;  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {   // 使頁面滾動到底部   wx.pageScrollTo({    scrollTop: rect.bottom + 5000   })  }).exec()  chatData.push({   type: 1,   contentType: 'text',   content: e.detail.value,   headImg: '../../assets/common/images/headHortrait.jpeg',  })  this.setData({   chatData,   inputVal:''  }); }, /**  * 退回上一頁  */ toBackClick: function () {  wx.navigateBack({}) }})

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