使用websocket做一个及时通讯功能————03使用网页完成即时通讯群聊天
接着上讲，这次我将会完成界面在线聊天的功能
1.打开上次的项目
在resource下建立以下几个文件和文件夹：如图
1.jq下载地址：点击下载
2.hsocket.js
//是否支持websocket
function isSupportWebSokent() {
var result=false
if ('WebSocket' in window) result=true
if ('MozWebSocket' in window) result=true
return result
}
//初始化websocket并接收链接消息
function Hsocket(url,from,to) {
this.websocket="";
this.from=from.toString();
this.to=-1;
if(to!=null) this.to=to;
this.to=this.to.toString()
if ('WebSocket' in window) {
this.websocket = new WebSocket(url);
} else if ('MozWebSocket' in window) {
this.websocket = new MozWebSocket(url);
}
var data=""
this.websocket.onopen=function (event) {
data=event.data;
}
return data
}
//发送消息
Hsocket.prototype.sendMessage=function (message) {
var from=this.from;
var to=this.to;
var params={from:from, to:to, msg:message}
this.websocket.send(JSON.stringify(params))
}
//主动关闭链接
Hsocket.prototype.close=function () {
this.websocket.close()
}解释一波吧,isSupportWebSokent方法为用来判断是否支持websocket协议，Hsocket对象初略封装了websocket
其他的自己看注释 不想说了
3.登录界面index.html
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<title>聊天登录界面title>
<style>
input {
-webkit-user-select: auto;
}
h3{text-align: center;margin-top: 50px;}
style>
head>
<body>
<header class="mui-bar mui-bar-nav">
<h4 class="mui-title" style="text-align: center">登录h4>
header>
<div class="mui-content">
<h5 style="text-align: center">欢迎登录h5>
请输入id: <input id="username" style="width: 50%;" type="text" onkeyup="value=value.replace(/[^\d]/g,'')" />
<div style="margin: 20px 35%;"><button id="loginBtn">登录button>div>
div>
<script src="js/jquery.min.js">script>
<script>
document.getElementById("loginBtn").addEventListener("click",function(){
var id=document.getElementById("username").value
if(id==""){
alert("请输入id")
}else if(parseInt(id)>8){
alert("id为1-8")
}else{
$.post("http://localhost:8080/login",{id:id},function (data) {
if(data.code==200){
window.location.href="views/all-chat.html?id="+id+"&header="+data.msg
}else{
alert(data.msg)
}
})
}
})
script>
body>
html>3.群聊界面all-chat.html
<html>
<head>
<meta charset="UTF-8">
<title>title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<style>
textarea {
-webkit-user-select: auto;
padding: 8px 5px!important;
width: 77%!important;
margin-left: 1%;
margin-right: 1%;
margin-bottom: 5px!important;
min-height: 22px;
overflow: scroll;
overflow-y: hidden;
overflow-x: hidden;
position: absolute;
}
#sendBtn {
padding: 9px!important;
width: calc(20% - 8px);
position: absolute;
bottom: 6px;
margin-left: 5px;
right: 0;
}
.bottom {
position: relative;
/*bottom: 0;*/
width: 100%;
padding-top: 10px;
height: 45px;
}
.bubbleItem {
width: 100%;
}
.bubble {
position: relative;
line-height: 30px;
padding: 3px 10px;
border-radius: 7px;
margin-top: 15px;
display: inline-block;
background-color: white;
max-width: calc(100% - 100px);
}
.leftBubble {
position: relative;
margin-left: 20px;
border: 1px solid #00b6b6;
background-color: #f8fdfc;
}
.leftBubble .bottomLevel {
position: absolute;
top: 10px;
left: -10px;
border-top: 10px solid #00b6b6;
border-left: 10px solid transparent;
}
.leftBubble .topLevel {
position: absolute;
top: 11px;
left: -8px;
border-top: 10px solid #f8fdfc;
border-left: 10px solid transparent;
z-index: 100;
}
.rightBubble {
position: relative;
margin-right: 20px;
float: right;
border: 1px solid #aaa;
}
.rightBubble .bottomLevel {
position: absolute;
top: 10px;
right: -10px;
border-top: 10px solid #aaa;
border-right: 10px solid transparent;
}
.rightBubble .topLevel {
position: absolute;
top: 11px;
right: -8px;
border-top: 10px solid #fff;
border-right: 10px solid transparent;
z-index: 100;
}
.clearfix:after {
visibility: hidden;
display: block;
font-size: 0;
content: " ";
clear: both;
height: 0;
}
.img-fit {
width: 38px;
height: 38px;
object-fit: cover;
margin-top: 10px;
border-radius: 50%;
}
.f-r {
float: right;
}
.f-l {
float: left;
}
.hBorder {
font-family: Arial, Helvetica, sans-serif;
}
#show{
height:0px;overflow:hidden
}
#allContent{
overflow: auto;
}
#content{
padding: 5px;
}
style>
head>
<body>
<div class="mui-content">
<div id="allContent">
<div id="content">div><div id="show">div>
div>
<div class="bottom" id="bottom">
<textarea id="area" rows="1" cols="10">textarea>
<button id="sendBtn">发送button>
div>
div>
<script type="text/javascript" src="../../js/hsocket.js">script>
<script type="text/javascript">
document.getElementById("allContent").style.height=(window.innerHeight - 60)+"px"
if(isSupportWebSokent()) {
var ws = new Hsocket('ws://localhost:8080/webSocket/' + GetQueryString("id"), GetQueryString("id"))
document.getElementById("sendBtn").addEventListener("click", function() {
var area = document.getElementById("area").value
if(area != "") {
createSelfText(GetQueryString("header"),area)
var message={"sender": GetQueryString("header"),"type":"text","content":area}
ws.sendMessage(JSON.stringify(message))
}
})
ws.websocket.onmessage = function(event) {
var message=JSON.parse(event.data)
createOtherText(message.sender,message.content);
}
}
function createOtherText(header,area) {
var div = document.createElement("div")
div.classList = "bubbleItem"
var imgDiv = document.createElement("div")
imgDiv.classList = "f-l"
var img = document.createElement("img")
img.classList = "img-fit"
img.src = header
imgDiv.appendChild(img)
div.appendChild(imgDiv)
var textD = document.createElement("div")
textD.classList = "bubble leftBubble"
var textS = document.createElement("span")
textS.innerText = area
textD.appendChild(textS)
var textS1 = document.createElement("span")
textS1.classList = "bottomLevel"
textD.appendChild(textS1)
var textS2 = document.createElement("span")
textS2.classList = "topLevel"
textD.appendChild(textS2)
div.appendChild(textD)
document.getElementById("content").appendChild(div)
document.getElementById("show").scrollIntoView();
document.getElementById("area").value = ""
}
function createSelfText(header,area) {
var div = document.createElement("div")
div.classList = "bubbleItem clearfix"
var spanB = document.createElement("span")
spanB.classList = "hBorder"
div.appendChild(spanB)
var imgDiv = document.createElement("div")
imgDiv.classList = "f-r"
var img = document.createElement("img")
img.classList = "img-fit"
img.src = header
imgDiv.appendChild(img)
div.appendChild(imgDiv)
var textD = document.createElement("div")
textD.classList = "bubble rightBubble"
var textS = document.createElement("span")
textS.innerText = area
textD.appendChild(textS)
var textS1 = document.createElement("span")
textS1.classList = "bottomLevel"
textD.appendChild(textS1)
var textS2 = document.createElement("span")
textS2.classList = "topLevel"
textD.appendChild(textS2)
div.appendChild(textD)
document.getElementById("content").appendChild(div)
document.getElementById("show").scrollIntoView();
document.getElementById("area").value = ""
}
function GetQueryString(name) {
var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
var r = window.location.search.substr(1).match(reg);
if(r!=null)return unescape(r[2]); return null;
}
script>
body>
html>好了,大工完成。现在你可以登录到群聊聊天室里进行聊天了