nodeJs--http

1.用法示例

通過下面的用法，可以瞭解http用法。

'use strict';
let http = require('http');
let url = require('url');
let querystring = require('querystring')

/**
 * @description 創建服務器
 */
function createServer() {
    //注意:當我們在服務器訪問網頁時，我們的服務器可能會輸出兩次“get request”。那是因爲大部分瀏覽器都會在你訪問 http://localhost:8888/時嘗試讀取 http://localhost:8888/favicon.ico )
    let server = http.createServer((request, response) => {
        //解析請求路徑
        let urlObj = url.parse(request.url)
        console.log(urlObj)
        //解析請求參數
        let queryObj = querystring.parse(urlObj.query)
        console.log(queryObj)
        //路由處理
        if (urlObj.pathname === '/testRequest') {
            //發送post請求
            postTest(response);
        } else if (urlObj.pathname === '/testPost') {
            //發送post請求, 接收並處理post data
            let jsonData = '';
            request.on("data", function(data) {
                jsonData += data
                console.log('接受數據中。。。');
            });
            request.on("end", function() {
                console.log('接受完成!');
                console.log(querystring.parse(jsonData));
            })
        } else {
            response.writeHead(200, {'Content-Type': 'text/plain'});
            response.write('hello nodeJs!')
            response.end();
        }
    })

    server.listen(8888);
    console.log('Server is running at http://127.0.0.1:8888/');
}

function postTest(response) {
    let postData = querystring.stringify({
            'msg': 'Hello World!'
        })
    //發送post請求localhost:8888/test並帶上參數postData
    let options = {
        hostname: 'localhost',
        port: 8888,
        path: '/test',
        method: 'POST',
        headers: {
            'Content-Type': '"text/plain',
            'Content-Length': postData.length
        }
    };

    let req = http.request(options);

    req.write(postData);
    req.end()
}

module.exports = {
    createServer: createServer
}