66 # form 数据格式化

实现一个 http 服务器客户端会发送请求 GET POST

要处理不同的请求体的类型

表单格式（formData a=1&b=2），可以直接通信不会出现跨域问题
JSON （"{"kaimo":"313"}"）
文件格式（二进制）

const http = require("http");
const url = require("url");
const querystring = require("querystring");let server = http.createServer();server.on("request", (req, res) => {let { pathname } = url.parse(req.url);if (pathname === "/login" && req.method == "POST") {const arr = [];req.on("data", (chunk) => {arr.push(chunk);});req.on("end", () => {let result = Buffer.concat(arr).toString();if (req.headers["content-type"] === "application/x-www-form-urlencoded") {let obj = querystring.parse(result, "&", "=");console.log(obj);res.setHeader("Content-Type", "application/json");res.end(JSON.stringify(obj));}});}
});server.listen(3000);

启动服务

nodemon "66 # form 数据格式化.js"

然后后编写测试 form 数据提交

<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>凯小默测试 form 数据格式提交</title>
</head><body><form action="http://localhost:3000/login" method="POST" enctype="application/x-www-form-urlencoded"><input type="text" name="username"><input type="text" name="password"><button type="submit">提交</button></form>
</body></html>