NodeJS快速-分别处理404 (未找到)和405 (不允许使用方法)

const http = require('http');

const server = http.createServer((req, res) => {
  // 处理请求
});

server.listen(3000, () => {
  console.log('Server is running on port 3000');
});

const http = require('http');
const fs = require('fs');

const server = http.createServer((req, res) => {
  if (req.url === '/404') {
    // 返回404页面
    fs.readFile('404.html', (err, data) => {
      if (err) {
        res.writeHead(404, { 'Content-Type': 'text/plain' });
        res.end('404 Not Found');
      } else {
        res.writeHead(404, { 'Content-Type': 'text/html' });
        res.end(data);
      }
    });
  } else {
    // 处理其他请求
    // ...
  }
});

server.listen(3000, () => {
  console.log('Server is running on port 3000');
});

const http = require('http');
const fs = require('fs');

const server = http.createServer((req, res) => {
  if (req.method === 'GET') {
    // 处理GET请求
    // ...
  } else if (req.method === 'POST') {
    // 处理POST请求
    // ...
  } else {
    // 返回405错误页面
    fs.readFile('405.html', (err, data) => {
      if (err) {
        res.writeHead(405, { 'Content-Type': 'text/plain' });
        res.end('405 Method Not Allowed');
      } else {
        res.writeHead(405, { 'Content-Type': 'text/html' });
        res.end(data);
      }
    });
  }
});

server.listen(3000, () => {
  console.log('Server is running on port 3000');
});