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//引入模块
const http = require("http");
const urlObj = require("url");
const pathObj = require("path");
const fs = require("fs");

//创建web页面服务
const server = http.createServer((req, res) => {
    //过滤ico图片请求
    if (req.url === "/favicon.ico") {
        res.end();
    } else {
        //获取请求路径
        let { pathname } = urlObj.parse(req.url, true);///www/index.html
        //判断 是否是根目录
        if (pathname === "/") { //当访问根 默认访问index.html
            pathname = "/index.html";
        }
        //获取扩展名
        let { ext } = pathObj.parse(pathname);
        //设置响应头信息
        res.writeHead(200, { "Content-type": getMine(ext)+";charset=UTF-8"});
        console.log(pathname,ext,getMine(ext));
        //响应相应文件
        res.end(fs.readFileSync("." + pathname));
    }

});
function getMine(ext) {
    switch (ext) {
        case ".html": return "text/html";
        case ".css": return "text/css";
        case ".js": return "text/html";
        case ".jpg": return "image/jpeg";
        case ".jpeg": return "image/jpeg";
        case ".json": return "application/json";
        default: return "text/plan";
    }
}
//设置端口
server.listen(3000);