vue使用WebSocket模擬實作聊天功能-簡易版
效果展示 兩個瀏覽器相互模擬
1.創建模擬node服務
在vue根目錄下創建 server.js 檔案模擬后端服務器
**在server終端目錄下載 **
npm install --s ws
2.撰寫server.js檔案
代碼如下
var userNum = 0; //統計在線人數
var chatList = [];//記錄聊天記錄
var WebSocketServer = require('ws').Server;
wss = new WebSocketServer({ port: 8181 }); //8181 與前端相對應
//呼叫 broadcast 廣播，實作資料互通和實時更新
wss.broadcast = function (msg) {
wss.clients.forEach(function each(client) {
client.send(msg);
});
};
wss.on('connection', function (ws) {
userNum++;//建立連接成功在線人數 +1
wss.broadcast(JSON.stringify({ funName: 'userCount', users: userNum, chat: chatList })); //建立連接成功廣播一次當前在線人數
console.log('Connected clients:', userNum);
//接收前端發送過來的資料
ws.on('message', function (e) {
var resData = JSON.parse(e)
console.log('接收到來自clent的訊息：' + resData.msg)
chatList.push({ userId: resData.userId, content: resData.msg });//每次發送資訊，都會把資訊存起來，然后通過廣播傳遞出去，這樣此每次進來的用戶就能看到之前的資料
wss.broadcast(JSON.stringify({ userId: resData.userId, msg: resData.msg })); //每次發送都相當于廣播一次訊息
});
ws.on('close', function (e) {
userNum--;//建立連接關閉在線人數 -1
wss.broadcast(JSON.stringify({ funName: 'userCount', users: userNum, chat: chatList }));//建立連接關閉廣播一次當前在線人數
console.log('Connected clients:', userNum);
console.log('長連接已關閉')
})
})
console.log('服務器創建成功')
然后npm run start啟動服務器
3.vue前端頁面
代碼如下
<template>
<div class="chat-box">
<header>聊天室人數：{{count}}</header>
<div class="msg-box" ref="msg-box">
<div
v-for="(i,index) in list"
:key="index"
class="msg"
:style="i.userId == userId?'flex-direction:row-reverse':''"
>
<div class="user-head">
<div
class="head"
:style="` background: hsl(${getUserHead(i.userId,'bck')}, 88%, 62%); clip-path:polygon(${getUserHead(i.userId,'polygon')}% 0,100% 100%,0% 100%); transform: rotate(${getUserHead(i.userId,'rotate')}deg)`"
></div>
</div>
<div class="user-msg">
<span
:style="i.userId == userId?'float: right':''"
:class="i.userId == userId?'right':'left'"
>{{i.content}}</span>
</div>
</div>
</div>
<div class="input-box">
<input type="text" ref="sendMsg" v-model="contentText" @keyup.enter="sendText()" />
<div class="btn" :class="{['btn-active']:contentText}" @click="sendText()">發送</div>
</div>
</div>
</template>
<script>
export default {
data() {
return {
ws: null,
count: 0,
userId: null, //當前用戶ID
list: [], //聊天記錄的陣列
contentText: "", //input輸入的值
};
},
created() {
this.getUserID();
},
mounted() {
this.initWebSocket();
},
methods: {
//根據時間戳作為當前用戶ID
getUserID() {
let time = new Date().getTime();
this.userId = time;
},
//根據userID生成一個隨機頭像
getUserHead(id, type) {
let ID = String(id);
if (type == "bck") {
return Number(ID.substring(ID.length - 3));
}
if (type == "polygon") {
return Number(ID.substring(ID.length - 2));
}
if (type == "rotate") {
return Number(ID.substring(ID.length - 3));
}
},
//滾動條到底部
scrollBottm() {
let el = this.$refs["msg-box"];
el.scrollTop = el.scrollHeight;
},
//發送聊天資訊
sendText() {
let _this = this;
_this.$refs["sendMsg"].focus();
if (!_this.contentText) {
return;
}
let params = {
userId: _this.userId,
msg: _this.contentText,
};
_this.ws.send(JSON.stringify(params)); //呼叫WebSocket send()發送資訊的方法
_this.contentText = "";
setTimeout(() => {
_this.scrollBottm();
}, 500);
},
//進入頁面創建websocket連接
initWebSocket() {
let _this = this;
//判斷頁面有沒有存在websocket連接
if (window.WebSocket) {
// 此處的 :8181 埠號 要與后端配置的一致
let ws = new WebSocket("ws://192.168.5.42:9502");
// let ws = new WebSocket("ws://192.168.5.8:8181"); //這里是我本地測驗
_this.ws = ws;
ws.onopen = function (e) {
console.log("服務器連接成功");
};
ws.onclose = function (e) {
console.log("服務器連接關閉");
};
ws.onerror = function () {
console.log("服務器連接出錯");
};
ws.onmessage = function (e) {
//接收服務器回傳的資料
let resData = JSON.parse(e.data);
if (resData.funName == "userCount") {
_this.count = resData.users;
_this.list = resData.chat;
} else {
_this.list = [
..._this.list,
{ userId: resData.userId, content: resData.msg },
];
}
};
}
},
},
};
</script>
<style lang="scss" scoped>
.chat-box {
margin: 0 auto;
background: #fafafa;
position: absolute;
height: 100%;
width: 100%;
// max-width: 700px;
header {
position: fixed;
width: 100%;
height: 3rem;
background: #409eff;
// max-width: 700px;
display: flex;
justify-content: center;
align-items: center;
font-weight: bold;
color: white;
font-size: 1rem;
}
.msg-box {
position: absolute;
height: calc(100% - 6.5rem);
width: 100%;
margin-top: 3rem;
overflow-y: scroll;
.msg {
width: 95%;
min-height: 2.5rem;
margin: 1rem 0.5rem;
position: relative;
display: flex;
justify-content: flex-start !important;
.user-head {
min-width: 2.5rem;
width: 20%;
width: 2.5rem;
height: 2.5rem;
border-radius: 50%;
background: #f1f1f1;
display: flex;
justify-content: center;
align-items: center;
.head {
width: 1.2rem;
height: 1.2rem;
}
// position: absolute;
}
.user-msg {
width: 80%;
// position: absolute;
word-break: break-all;
position: relative;
z-index: 5;
span {
display: inline-block;
padding: 0.5rem 0.7rem;
border-radius: 0.5rem;
margin-top: 0.2rem;
font-size: 0.88rem;
}
.left {
background: white;
animation: toLeft 0.5s ease both 1;
}
.right {
background: #53a8ff;
color: white;
animation: toright 0.5s ease both 1;
}
@keyframes toLeft {
0% {
opacity: 0;
transform: translateX(-10px);
}
100% {
opacity: 1;
transform: translateX(0px);
}
}
@keyframes toright {
0% {
opacity: 0;
transform: translateX(10px);
}
100% {
opacity: 1;
transform: translateX(0px);
}
}
}
}
}
.input-box {
padding: 0 0.5rem;
position: absolute;
bottom: 0;
width: 97%;
height: 3.5rem;
background: #fafafa;
box-shadow: 0 0 5px #ccc;
display: flex;
justify-content: space-between;
align-items: center;
input {
height: 2.3rem;
display: inline-block;
width: 100%;
padding: 0.5rem;
border: none;
border-radius: 0.2rem;
font-size: 0.88rem;
}
.btn {
height: 2.3rem;
min-width: 4rem;
background: #e0e0e0;
padding: 0.5rem;
font-size: 0.88rem;
color: white;
text-align: center;
border-radius: 0.2rem;
margin-left: 0.5rem;
transition: 0.5s;
line-height: 2.3rem;
}
.btn-active {
background: #409eff;
}
}
}
</style>
- 然后npm run dev，就可以實作局域網聊天了，有無線的話可以用手機連著無線訪問你的IP地址訪問，沒的話可以試下多開幾個視窗，也是能看到效果的！！
- 進入聊天室時和發送資訊時服務器的列印日志
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