Node.js GET与POST请求

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var http = require('http');var url = require('url');createServer();submitByGet();submitByPost();function createServer() {    http.createServer(function(req, res){        if(req.method.toUpperCase() == 'GET') {            res.writeHead(200, {'Content-Type': 'text/plain;charset=utf-8'});            res.write('submit by ' + req.method.toUpperCase() + '\n');            //url.parse后得到的是一个json对象            res.write(JSON.stringify(url.parse(req.url))+'\n');            //虽然说url.parse后是一个json对象，但是用点号('.')取得它的值以后就是一个字符串对象了            res.end(url.parse(req.url).query+'\n');        } else if (req.method.toUpperCase() == 'POST') {            res.writeHead(200, {'Content-Type': 'text/plain;charset=utf-8'});            var postData = 'submit by ' + req.method.toUpperCase() + '\n';            //因为post方式的数据不太一样可能很庞大复杂，所以要添加监听来获取传递的数据            req.addListener('data', function(data) {                postData += data;            }).addListener('end', function(data) {                res.write(postData+'\n');                //url.parse后得到的是一个json对象                res.end(JSON.stringify(url.parse(req.url))+'\n');            });        } else {            res.writeHead(404, {'Content-Type': 'text/plain;charset=utf-8'});            res.end("{'errcode':404,'errmsg':'404 网页未找到'}\n");        }    }).listen(8080, function(){        console.log('listen on port 8080...');    });}//因为绝大数网络请求都是get请求，所以官方单独对get请求做了个简化版function submitByGet() {    var urlPath = 'http://127.0.0.1:8080/index.html?' + encodeURIComponent('name=龙神&password=123456');    http.get(urlPath, function(response){        response.setEncoding('utf-8');        console.log('状态码 : ' + response.statusCode);        console.log('response.headers = ' + JSON.stringify(response.headers));        //注意：这里如果不赋空值的话，undefined会被转为string添加进去        var receivedData = '';        response.on('data', function(chunk) {            receivedData += chunk;        }).on('end', function() {            //默认获取的数据是经过encodeURL之后的数据，需要使用decode解码            console.log('receivedRawData : ' + receivedData);            console.log('receivedDecodeData : ' + decodeURIComponent(receivedData));        });    }).on('error', function(e){        console.error(e.message);    });}function submitByPost() {    //以键值对的形式构造的变量默认情况下都是一个对象    var sendData = {'name':'chy龙神', 'password':'123456'};    var postData = encodeURIComponent(JSON.stringify(sendData));    //只有post时，才需要Content-Length    var req = http.request({port:'8080', path:'http://localhost:8080/index.html', method:'POST', headers:{'Content-Type':'application/x-www-form-urlencoded'}, 'Content-Length': postData.length}, function(response){        response.setEncoding('UTF8');        console.log('状态码 : ' + response.statusCode);        console.log('response.headers = ' + JSON.stringify(response.headers));        //注意：这里如果不赋空值的话，undefined会被转为string添加进去        var receivedData = '';        response.on('data', function(chunk) {            receivedData += chunk;        }).on('end', function(){            //默认获取的数据是经过encodeURL之后的数据，需要使用decode解码            console.log('receivedRawData : ' + receivedData);            console.log('receivedDecodeData : ' + decodeURIComponent(receivedData));        });    }).on('error', function(e){        console.error(e.message);    });    //write仅对post方法有效    req.write(postData);    //end方法可以和request方法连写，但是write不可以    req.end();}

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>get-post-demo</title></head><body><form method="get" action="http://127.0.0.1:8080" >    <input name="name" type="text" value="freddon" />    <input name="password" type="password" value="123456"/>    <input type="submit" value="submit by GET" /></form><form method="post" action="http://127.0.0.1:8080" >    <input name="name" type="text" value="freddon" />    <input name="password" type="password" value="123456"/>    <input type="submit" value="submit by POST" /></form></body></html>

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