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nodejs加WebSocket,聊天工具

2017-01-12 12:59 239 查看

1、WebSocket必须要与服务器连接，所以这里采用node起服务，这里用到了ws，，也有人用nodejs-websocket

2、首先

npm install ws

3、新建一个server.js 文件,用来起服务，代码如下

var WebSocketServer = require('ws').Server,
wss = new WebSocketServer({ port: 8181 });

//var client1 = null,client2=null,client1Ready = false, client2Ready = false;

var config = {
client1:{
Ready:false,
pipe:null
},
client2:{
Ready:false,
pipe:null
},
client3:{
Ready:false,
pipe:null
},
client4:{
Ready:false,
pipe:null
},

}

wss.on('connection', function (ws) {
console.log('client connected');
ws.on('message', function (message) {
if(config[message]){
config[message]["Ready"] = true;
config[message]["pipe"] = ws;
}else{
var data = JSON.parse(message);
if(config[data.send]["Ready"] && config[data.receive]["Ready"] ){
ws.send(message);
config[data.receive]["pipe"].send(message);
}else{
ws.send(JSON.stringify({"error":true}));
}

}

});

ws.on("close",function(code, reason){

for(var i in config){
if(config[i].pipe === ws){
config[i].Ready = false;
config[i].pipe = null;
break;
}
}
console.log("关闭链接");
});

});

//npm install ws

　　4、新建一个client1.html, 客户端，注意文件中引入了jquery，自己改一下文件路径吧

　　　　

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>女汉子</title>
<style type="text/css">
*{
padding: 0;
margin: 0;
font-family: "微软雅黑";
}
#chat{
width: 600px;
height: 400px;
margin: 50px auto;
border: 4px solid yellowgreen;

}
p{
font-size: 16px;
color: #9ACD32;
padding: 0 20px;
}
#chat p.send{
text-align: left;
color: deeppink;
}
#chat p.receive{
text-align: right;
}
.btn{
text-align: center;
}
.showState{
text-align: center;
}
.showInfo{
text-align: center;
}
</style>
</head>
<body>
<div class="showState">正在链接..</div>
<div class="showInfo"></div>
<div id="chat">

</div>
<div class="btn">
<input type="text" name="message" id="message" value="" />
<button onclick="sendMessage()">发送</button>
</div>

</body>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
var config = {
"send":"client1",
"receive":"client2",
"sendNike":"女汉纸",
"receiveNike":"屌丝青年"
}
var mes = document.getElementById("message");
var box = $("#chat");
var chatWith = $(".showInfo");
var showState = $(".showState");
var ws = new WebSocket("ws://localhost:8181");
ws.onopen = function (e) {
ws.send(config.send);
showState.html("链接成功!");
chatWith.html("你正在和:"+ config.receiveNike + "聊天");
}
function sendMessage() {
var mesage = {
"send":config.send,
"receive":config.receive,
"message":mes.value,
"sendNike":config.sendNike,
};
var str = JSON.stringify(mesage);
ws.send(str);
}
ws.onmessage=function (e) {
create(JSON.parse(e.data));
};

function create(data){
if(data.error){
alert("发送失败,对方不在线!");
}else{
if(data.send == config.send ){
box.append("<p class='send'>"+ config.sendNike+":" +data.message +"</p>");
}else{
box.append("<p class='receive'>"+ data.sendNike+":" + data.message +"</p>");
}

}

}

</script>
</html>

　　5、再新建一个client2.html文件，客户端，注意文件中引入了jquery，自己改一下文件路径吧

　　　　

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>屌丝青年</title>
<style type="text/css">
*{
padding: 0;
margin: 0;
font-family: "微软雅黑";
}
#chat{
width: 600px;
height: 400px;
margin: 50px auto;
border: 4px solid yellowgreen;

}
p{
font-size: 16px;
color: #9ACD32;
padding: 0 20px;
}
#chat p.send{
text-align: left;
color: deeppink;
}
#chat p.receive{
text-align: right;
}
.btn{
text-align: center;
}
.showState{
text-align: center;
}
.showInfo{
text-align: center;
}
</style>
</head>
<body>
<div class="showState">正在链接..</div>
<div class="showInfo"></div>
<div id="chat">

</div>
<div class="btn">
<input type="text" name="message" id="message" value="" />
<button onclick="sendMessage()">发送</button>
</div>

</body>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
var config = {
"send":"client2",
"receive":"client1",
"sendNike":"屌丝青年",
"receiveNike":"女汉纸"
}

var mes = document.getElementById("message");
var box = $("#chat");
var chatWith = $(".showInfo");
var showState = $(".showState");
var ws = new WebSocket("ws://localhost:8181");
ws.onopen = function (e) {
ws.send(config.send);
showState.html("链接成功!");
chatWith.html("你正在和:"+ config.receiveNike + "聊天");
}
function sendMessage() {
var mesage = {
"send":config.send,
"receive":config.receive,
"message":mes.value,
"sendNike":config.sendNike,
};
var str = JSON.stringify(mesage);
ws.send(str);
}
ws.onmessage=function (e) {
create(JSON.parse(e.data));
};

function create(data){
if(data.error){
alert("发送失败,对方不在线!");
}else{
if(data.send == config.send ){
box.append("<p class='send'>"+ config.sendNike+":" +data.message +"</p>");
}else{
box.append("<p class='receive'>"+ data.sendNike+":" + data.message +"</p>");
}

}

}

</script>
</html>

　　

　　6、先执行node server,服务跑起来，（注意：服务不跑起来，是无法聊天的）

　　　　运行：client1.html和client2.html

　　7、开始聊天

　　　　

　　

　　

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