如何在Node.js中使用POST响应的值？

const http = require('http');

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

const server = http.createServer((req, res) => {
  let body = '';
  
  req.on('data', (chunk) => {
    body += chunk;
  });
  
  req.on('end', () => {
    // POST数据接收完成后的处理逻辑
    console.log(body);
  });
});

const server = http.createServer((req, res) => {
  let body = '';
  
  req.on('data', (chunk) => {
    body += chunk;
  });
  
  req.on('end', () => {
    const postData = JSON.parse(body);
    console.log(postData);
  });
});

const server = http.createServer((req, res) => {
  let body = '';
  
  req.on('data', (chunk) => {
    body += chunk;
  });
  
  req.on('end', () => {
    const postData = JSON.parse(body);
    console.log(postData);
    
    // 发送响应给客户端
    res.statusCode = 200;
    res.setHeader('Content-Type', 'text/plain');
    res.end('POST请求已成功处理');
  });
});