day_004.md

day 4

json-server 中间件的使用

// package.json中
 "scripts": {
    ...
    "json_server": "json-server __json_server_mock__/db.json --watch --port 3006 --middlewares ./__json_server_mock__/middleware.js "
  },

在创建__json_server_mock__ 下创建middleware.js

module.exports = (req, res, next) => {
    if (req.method === "POST" && req.path === "/login") {
        console.log("req::",req.body);
        if (req.body.username === "liu" && req.body.password === "123456") {
            return res.status(200).json({
                user: {
                    token: '123'
                }
            })
        } else {
            return res.status(400).json({
                message: "用户名密码错误"
            })
        }
    }
}

post http://localhost:3006/login

Headers: Content-Type application/json

Body: { username: 'liu', password: '123456' }

请求即可