首先下载express模块，命令行输入
npm install express
1.node.js中express模块创建服务端
在js代码同文件位置新建一个文件夹(www_root)，里面存放网页文件等，就可以在浏览器中访问了
var express = require("express"); var path = require("path"); var app = express(); //目录 (当前目录下的www_root目录) app.use(express.static(path.join(process.cwd(),"www_root"))); //监听 var server = app.listen(6080); app.get('https://www.jb51.net/', function (req, res) { //发送数据 res.send('Hello World ~~~~~~~~~~~~!'); }); // get, 处理响应 app.get("/login", function (request, respones) { console.log("/login comming"); // 服务器收到请求后，获取客户端get操作参数 console.log(request.query); // 服务器回信息给客户端 respones.send("已连接上服务器~~"); }); app.post("/upload", function(request, respones) { console.log("/upload comming"); // 获得url上传来的参数 console.log(request.query); // 获得用户给我们发送过来的数据 // 监听我们的data来获得 request.on("data", function(data) { console.log(data.toString()); respones.send("UPLOAD OK"); }); });
2.http模块客户端发请求
(实例1)http_get测试
var http = require("http"); /* callback(is_success, data/erro) */ function http_get(ip, port, url, params, callback){ //创建一个http.ClientRequest对象 var options = { host : ip, port : port, path : url+"?"+params, method : "GET", }; var request = http.request(options,function(incoming_msg){ console.log("get respones"); }); //发送这个请求 request.end(); } http_get("127.0.0.1", 6080, "/login", "uname=jadeshu&upw=123456", function(is_ok,data){ });
(实例2)http_get、http_post测试
var http = require("http"); /* [100] = "Continue", [101] = "Switching Protocols", [200] = "OK", [201] = "Created", [202] = "Accepted", [203] = "Non-Authoritative Information", [204] = "No Content", [205] = "Reset Content", [206] = "Partial Content", [300] = "Multiple Choices", [301] = "Moved Permanently", [302] = "Found", [303] = "See Other", [304] = "Not Modified", [305] = "Use Proxy", [307] = "Temporary Redirect", [400] = "Bad Request", [401] = "Unauthorized", [402] = "Payment Required", [403] = "Forbidden", [404] = "Not Found", [405] = "Method Not Allowed", [406] = "Not Acceptable", [407] = "Proxy Authentication Required", [408] = "Request Time-out", [409] = "Conflict", [410] = "Gone", [411] = "Length Required", [412] = "Precondition Failed", [413] = "Request Entity Too Large", [414] = "Request-URI Too Large", [415] = "Unsupported Media Type", [416] = "Requested range not satisfiable", [417] = "Expectation Failed", [500] = "Internal Server Error", [501] = "Not Implemented", [502] = "Bad Gateway", [503] = "Service Unavailable", [504] = "Gateway Time-out", [505] = "HTTP Version not supported", } */ /* callback(is_success, data/erro) */ // get请求的参数，是带在URL的地址上面的 function http_get(ip, port, url, params, callback) { // step1,创建一个 http.ClientRequest var options = { host: "127.0.0.1", port: port, path: url + "?" + params, method: "GET" }; // 当有请求返回的时候，参数就会被传递为http.IncomingMessage var req = http.request(options, function(incoming_msg) { console.log("respones status " + incoming_msg.statusCode); // 监听IncomingMessage的data事件，当收到服务器发过来的数据的时候，触发这个事件 incoming_msg.on("data", function(data) { if (incoming_msg.statusCode === 200) { callback(true, data); } }); }); // 把这个请求发送出去 req.end(); } /* http_get("127.0.0.1", 6080, "/login", "uname=blake&upwd=123456", function(is_ok, data) { if (is_ok) { console.log(data.toString()); } }); */ // post可以带body数据传到服务器 function http_post(ip, port, url, params, body, callback) { // step1,创建一个 http.ClientRequest var options = { host: "127.0.0.1", port: port, path: url + "?" + params, method: "POST", headers: { "Content-Type": "application/x-www-form-urlencoded", "Content-Length": body.length } }; var req = http.request(options, function(incoming_msg) { console.log("respones status " + incoming_msg.statusCode); // 监听IncomingMessage的data事件，当收到服务器发过来的数据的时候，触发这个事件 incoming_msg.on("data", function(data) { if (incoming_msg.statusCode === 200) { callback(true, data); } }); }); // step2 写入body数据 req.write(body); // 发送请求 req.end(); } http_post("127.0.0.1", 6080, "/upload", "filename=my_file.txt", "Hello Htpp Post", function(is_ok, data) { if (is_ok) { console.log("upload_success", data.toString()); } });
总结
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