带有express和mysql的Node.js -重新定义获取的参数以进行正确的列搜索

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

const app = express();

// 创建MySQL连接
const connection = mysql.createConnection({
  host: 'localhost',
  user: 'root',
  password: 'password',
  database: 'database_name'
});

// 连接到MySQL数据库
connection.connect((err) => {
  if (err) {
    console.error('Error connecting to MySQL database: ' + err.stack);
    return;
  }
  console.log('Connected to MySQL database');
});

// 定义GET路由，用于进行列搜索
app.get('/search', (req, res) => {
  const searchColumn = req.query.column; // 获取搜索列名
  const searchValue = req.query.value; // 获取搜索值

  // 构建SQL查询语句
  const query = `SELECT * FROM table_name WHERE ${searchColumn} = '${searchValue}'`;

  // 执行查询
  connection.query(query, (error, results) => {
    if (error) {
      console.error('Error executing MySQL query: ' + error.stack);
      return;
    }
    res.json(results); // 返回查询结果
  });
});

// 启动服务器
app.listen(3000, () => {
  console.log('Server is running on port 3000');
});