enter image description here所以我试图通过HTTP请求/响应通过中间件功能和POST方法为用户设置登录/注册路由器，但我在完成两者的路由器时遇到了麻烦。我在登录路由中创建了“200”和“401”状态代码，但只是想弄清楚如何为注册用户路由器执行此操作。
这是在VS Code上的App.js中编码的。PS我在3060上监听了Port，当我输入localhost：3060时，我在Chrome浏览器上得到了Cannot Get 404错误代码。我在app.js模块中没有任何特定的语法错误。
我甚至尝试阅读express.com和MDN上的文档，但没有找到任何解决方案。我知道这不会那么困难，因为最终我想实现注销路由和电子邮件正则表达式以及哈希密码。但无论如何，这里是app.js和package.json的代码

const express = require('express');
const app = express();
const mysql = require('mysql')

const port = 3060;

// Connect to MySQL database
const sqlconn = mysql.createConnection({
    host: "localhost",
    email: "[email protected]",
    password: "dsfsd78df&I*\$",
    name: "Corey James",
    database: "MyDB",
    port: 3020
});

sqlconn.connect((err) => {
    if (err) throw err;
    console.log("Database connection successful");
});

//Router for user registering an account with middleware
app.post('/register', (req, res) => {
    
    res.status(200).send('Successfully created an account')

});

// Router (API) for login in Express.js using HTTP Req & Res (POST)
app.post('/login', (req, res) => {

    const email = '[email protected]'
    const password = 'Password123!'
    
    if(!email) res.status(401).send('Invalid email')
    if(!password) res.status(401).send('Invalid password')
    res.status(200).send('Successful login')
});

// Router for logging out user
app.post('/logout', (req, res) => {
    res.status(200).send('Successfully logged out')
    
});

// server is listening on port 3060
app.listen(port, () => {
    console.log(`Listening on port ${port}..`);
})

{
  "dependencies": {
    "email-regex": "^5.0.0",
    "express": "^4.18.2",
    "mysql2": "^3.6.5",
    "supertest": "^6.3.3"
  },
  "name": "projectvirtual",
  "version": "1.0.0",
  "main": "server.js",
  "scripts": {
    "startdev": "env-cmd -e dev nodemon server.js",
    "startprod": "env-cmd -e prod nodemon server.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "env-cmd": "^10.1.0",
    "nodemon": "^3.0.2"
  },
  "description": ""
}

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我试着检查app.js的代码，我没有发现语法问题。我不确定我是否在浏览器上得到这个错误代码，因为我对两个路由器都使用POST。
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