如何在CocosCreator中使用http和WebSocket 如何在CocosCreator中使用http和

CocosCreator版本2.3.4
一、HttpGET Get方式，客户端请求本机地址3000端口，并携带参数url和name，服务端收到后返回name参数。
cocos客户端：

//访问地址let url = "http://127.0.0.1:3000/?url=123&name=321"; //新建Httplet xhr = new XMLHttpRequest(); //接收数据xhr.onreadystatechange = function () {if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status < 400)) {var response = xhr.responseText; console.log(response); }}; //错误处理xhr.onerror = function(evt){console.log(evt); }//初始化一个请求，GET方式，true异步请求xhr.open("GET", url, true); //发送请求xhr.send();

为了方便测试，在本机用nodejs搭建一个简易服务器，在收到访问后，返回请求参数中的name值。
nodejs服务端：

var app = require('express')(); var http = require('http').Server(app); app.get('/', function(req, res){ //设置允许跨域的域名，*代表允许任意域名跨域res.header("Access-Control-Allow-Origin","*"); //允许的header类型res.header("Access-Control-Allow-Headers","content-type"); //跨域允许的请求方式res.header("Access-Control-Allow-Methods","DELETE,PUT,POST,GET,OPTIONS"); res.send(req.query.name); }); http.listen(3000, function(){ console.log('listening on *:3000'); });

运行nodejs的服务器，并运行cocos代码，cocos中

console.log(response); //输出为321

二、HTTPPOST 客户端请求服务器，携带参数name，服务端收到后返回name。
cocos客户端：

let url = "http://127.0.0.1:3000/"; let xhr = new XMLHttpRequest(); xhr.onreadystatechange = function () {if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status < 400)) {var response = xhr.responseText; console.log(response); }}; xhr.onerror = function(evt){console.log(evt); }xhr.open("POST", url, true); xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); xhr.send("name=123");

【如何在CocosCreator中使用http和WebSocket】nodejs服务端：

var app = require('express')(); var http = require('http').Server(app); var querystring = require('querystring'); app.post('/', function(req, res){ //设置允许跨域的域名，*代表允许任意域名跨域res.header("Access-Control-Allow-Origin","*"); //允许的header类型res.header("Access-Control-Allow-Headers","content-type"); //跨域允许的请求方式res.header("Access-Control-Allow-Methods","DELETE,PUT,POST,GET,OPTIONS"); var body = ""; req.on('data', function (chunk) {body += chunk; //一定要使用+=，如果body=chunk，因为请求favicon.ico，body会等于{}console.log("chunk:",chunk); }); req.on('end', function () {body = querystring.parse(body); console.log("body:",body); res.send(body.name); }); }); http.listen(3000, function(){ console.log('listening on *:3000'); });

cocos输出

console.log(response); //输出123

三、WebSocket cocos客户端代码：
连接本地服务器127.0.0.1:8001，连接成功后发送一段字符串，并将接收的字符串打印

let ws = new WebSocket("ws://127.0.0.1:8001"); ws.onopen = function (event) {console.log("Send Text WS was opened."); }; ws.onmessage = function (event) {console.log("response text msg: " + event.data); }; ws.onerror = function (event) {console.log("Send Text fired an error"); }; ws.onclose = function (event) {console.log("WebSocket instance closed."); }; setTimeout(function () {if (ws.readyState === WebSocket.OPEN) {console.log("WebSocket start send message."); ws.send("Hello WebSocket, I'm a text message."); }else {console.log("WebSocket instance wasn't ready..."); }}, 3000);

nodejs服务端：
接收字符串成功后，打印接收的数据，并返回一段字符串。

var ws = require("nodejs-websocket"); console.log("开始创建websocket"); var server = ws.createServer(function(conn){console.log("连接成功"); conn.on("text", function (obj) {console.log("接收:",obj); conn.send("message come from server"); })conn.on("close", function (code, reason) {console.log("关闭连接")}); conn.on("error", function (code, reason) {console.log("异常关闭")}); }).listen(8001)console.log("开始创建websocket完毕");

测试结果，客户端浏览器输出：