百度蜘蛛池自动收录seo,北京网站搜索引擎优化,军事新闻播报最新,美德的网站建设原生node封装一个简易的服务器, 把前面几天的知识揉和起来做一个服务器基础实现, 首页访问, 静态资源服务器, 特定接口封装, 404app.js 服务器入口文件 app.js node app.js即可启动服务器
const { start } require(./modules/server);
start();require_modules.js 整合模块导…原生node封装一个简易的服务器, 把前面几天的知识揉和起来做一个服务器基础实现, 首页访问, 静态资源服务器, 特定接口封装, 404app.js 服务器入口文件 app.js node app.js即可启动服务器
const { start } require(./modules/server);
start();require_modules.js 整合模块导出
const url require(url);
const path require(path);
const http require(http);
const querystring require(querystring);
const fs require(fs);
const multiparty require(multiparty);module.exports {url,path,http,querystring,fs,multiparty
};
server.js server 启动模块
const { http } require(./require_modules);
const { port, host } require(./config);
const { route } require(./router);function start() {const server http.createServer((req, res) {route(req, res);});server.listen(port, host, () {console.log(server listening in http://${host}:${port});});
}
module.exports { start };
router.js 路由模块, 以及接口处理函数对照表
const { url } require(./require_modules);
const { host, port } require(./config);
const { staticHanlder, indexHanlder, tableHanlder, notFind } require(./hanlder);
const hanlder {/index: indexHanlder,/static: staticHanlder,/index: indexHanlder,/getTableData: tableHanlder,404: notFind
};
const route (req, res) {const thisURL new URL(http://${host}:${port}${req.url});let pathname thisURL.pathname;if (pathname /) {pathname /index/;}const thisHanlder Object.entries(hanlder).find(([key, val]) {let reg new RegExp(^${key}/.*);return reg.test(pathname);})?.[1] ?? hanlder[404];thisHanlder(req, res, pathname);
};
module.exports { route };hanlder.js 接口处理函数模块
const { fs, path, querystring } require(../modules/require_modules);
const { getMimeType } require(../modules/mime_type);
const { root } require(./config);
const { host, port } require(./config);function staticHanlder(req, res, pathname) {res.writeHeader(200, { content-type: getMimeType(pathname) });const filePath path.join(root, pathname);fs.stat(filePath, (err, stats) {if (err) {notFind(req, res, pathname);return;}if (!stats) {notFind(req, res, pathname);return;}if (stats.isDirectory()) {notFind(req, res, pathname);return;}if (stats.isFile()) {fs.readFile(filePath, (err, data) {if (err) {notFind(req, res, pathname);}res.writeHeader(200, { content-type: getMimeType(pathname) });res.end(data);});return;}});
}
function indexHanlder(req, res, pathname) {res.writeHeader(200, { content-type: text/html;charsetutf-8 });res.end(!DOCTYPE htmlhtml langenheadmeta charsetUTF-8 /meta nameviewport contentwidthdevice-width, initial-scale1.0 /titleindex/title/headbodyh1欢迎~/h1/body/html);
}
function tableHanlder(req, res, pathname) {const thisURL new URL(http://${host}:${port}${req.url});let search thisURL.search.replace(?, );const searchInfo querystring.parse(search);let start Number(searchInfo.start) || 0;let end Number(searchInfo.end) || start 10;const jsonPath path.join(root, /data/table.json);fs.readFile(jsonPath, (err, data) {if (err) {notFind(req, res, pathname);return;}const jsonData JSON.parse(data.toString(utf-8));const resData jsonData.slice(start, end);res.writeHeader(200, { content-type: application/json;charsetutf-8 });res.end(JSON.stringify(resData));});
}function notFind(req, res, pathname) {res.writeHeader(404, { content-type: text/html;charsetutf-8 });res.end(!DOCTYPE htmlhtml langenheadmeta charsetUTF-8 /meta nameviewport contentwidthdevice-width, initial-scale1.0 /title404/title/headbodyh1not find/h1/body/html);
}
function serverError(req, res, pathname) {res.writeHeader(500, { content-type: text/html;charsetutf-8 });res.end(!DOCTYPE htmlhtml langenheadmeta charsetUTF-8 /meta nameviewport contentwidthdevice-width, initial-scale1.0 /title500/title/headbodyh1server error/h1/body/html);
}
module.exports {staticHanlder,indexHanlder,tableHanlder,notFind,serverError
};mime_type.js 其它模块, 用于获取媒体文件类型
const { path } require(../modules/require_modules);
const MIME_TYPE {css: text/css,gif: image/gif,html: text/html,ico: image/x-icon,jpeg: image/jpeg,jpg: image/jpeg,js: text/javascript,json: application/json,pdf: application/pdf,png: image/png,svg: image/svgxml,swf: application/x-shockwave-flash,tiff: image/tiff,txt: text/plain,wav: audio/x-wav,wma: audio/x-ms-wma,wmv: video/x-ms-wmv,xml: text/xml
};function getMimeType(pathname) {let ext path.extname(pathname).replace(., ).toLowerCase();if (!ext) {ext pathname;}return MIME_TYPE[ext] || MIME_TYPE[txt];
}
module.exports {getMimeType
};config.js 其它模块 服务器基本信息配置
module.exports {root: process.cwd(),host: 127.0.0.1,port: 3008
};其实这就是node框架express做的事情 封装服务器有着比较繁琐的过程, 这只是一个简单的模型演示, 比如需要封装上传文件的接口, 你可以用到第三方库multiparty, 需要处理ajax跨域, 你可以封装一个前面学的跨域处理函数 :-)
