fykang / node

Node.js笔记

Node.js

目录

• 配置说明
  • 系统
  • node.js版本
  • nmp版本
• 测试代码示例
  • http的测试代码
  • https的测试代码
• 基本概念
  • 异步机制
  • 轮询机制
• GET和POST请求(HTTPS模式)
  • GET请求

配置说明：

系统

• LSB Version: :core-4.1-amd64:core-4.1-noarch
• Distributor ID: CentOS
• Description: CentOS Linux release 7.2.1511 (Core)
• Release: 7.2.1511
• Codename: Core

node.js版本

• v6.11.3

nmp版本

• 3.10.10

测试代码示例

注意开放相关端口,可以用以下命令进行端口占用查询netstat -ntlp

http的测试代码

	const http = require('http');

	const hostname = '127.0.0.1';
	const port = 3000;

	const server = http.createServer((req, res) => {
		 res.statusCode = 200;
		 res.setHeader('Content-Type', 'text/plain');
		 res.end('Hello World\n');
	});

	server.listen(port, hostname, () => {
		 console.log(`Server running at http://${hostname}:${port}/`);
	});

https的测试代码

	// curl -k https://localhost:8000/
	const https = require('https');
	const fs = require('fs');

	const options = {
		 key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
		 cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem')
	};

	https.createServer(options, (req, res) => {
		 res.writeHead(200);
		 res.end('hello world\n');
	}).listen(8000);

GET和POST请求(HTTPS模式)

GET请求

// curl -k https://localhost:8000/
var https = require('https');

const url = require('url');

const querystring = require('querystring');
var fs = require('fs');

var port='8000';

var hostname='127.0.0.1';

var options = {
  key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
  cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem')
};

var getUrl = function(req, res){
	uri = req.url;
	if (uri !== '/favicon.ico') {
		console.log(uri);
		// 获取get参数字符串
		str = url.parse(uri).query;
		console.log(str);
		// 将参数字符串转换为json对象
		json = querystring.parse(str);
		console.log(json);
		res.write('GET node.js !');
		res.end();
	}
}

var server=https.createServer(options,getUrl);
server.listen(8000);

console.log(`Server running at http://${hostname}:${port}/`);