express

快速开始

const express = require("express");
const app = express();
app.listen(80, (err) => {
  console.log(err || "stand by");
});
https.createServer({ key, cert }, app).listen(443, (err) => {
  console.log(err || "stand by");
});

全局配置

app.all("*", (req, res, next) => {
  res.setHeader("Access-Control-Allow-Origin", "*");
  next();
});

引入中间件

router.use(express.json());
router.use(express.urlencoded({ extended: false }));

挂载路由

const router = express.Router();
router.get("/(get)?path", (req, res) => {
  console.log(req.query);
  res.send("hello world!");
});
router.post("/path/:params", (req, res) => {
  console.log(req.params);
  console.log(req.body);
  res.json("post success");
});
router
  .route(/\/path/i)
  .put((req, res) => {
    res.sendFile(path.resolve(__dirname, "./xxx.txt"));
  })
  .delete((req, res) => {
    res.download(path.resolve(__dirname, "./xxx.txt"));
  });
app.use(router);

处理 histroy 路由

server.use(require("connect-history-api-fallback")());

部署静态资源

app.use(express.static(path.resolve(__dirname, "../dist")));
app.use("/public", express.static(path.resolve(__dirname, "../public")));

响应方式、

方法	描述
json()	返回 json
download()	下载文件
sendFile()	以八位元流形式发送文件
redirect()	重定向
send()	发送各种类型的响应
end()	结束响应进程
jsonp()	返回 jsonp
render()	呈现视图模板
sendStatus()	设置响应状态码并以响应主体形式发送其字符串表示
stauts()	设置响应状态码