second commit

test-db-connection.js

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+const mysql = require('mysql2/promise');
+
+// 数据库连接配置
+const dbConfig = {
+  host: 'gz-cynosdbmysql-grp-d26pzce5.sql.tencentcdb.com',
+  port: 24936,
+  user: 'root',
+  password: '!Rjb12191',
+  database: 'pronode_db',
+  charset: 'utf8mb4'
+};
+
+async function testConnection() {
+  let connection;
+  
+  try {
+    console.log('🔌 正在连接腾讯云数据库...');
+    
+    // 创建连接
+    connection = await mysql.createConnection(dbConfig);
+    
+    console.log('✅ 数据库连接成功！');
+    
+    // 测试查询
+    const [rows] = await connection.execute('SELECT 1 as test');
+    console.log('✅ 查询测试成功:', rows[0]);
+    
+    // 检查数据库是否存在
+    const [databases] = await connection.execute('SHOW DATABASES');
+    console.log('📊 可用数据库:');
+    databases.forEach(db => {
+      console.log(`  - ${db.Database}`);
+    });
+    
+    // 检查当前数据库的表
+    const [tables] = await connection.execute('SHOW TABLES');
+    console.log('📋 当前数据库表:');
+    if (tables.length === 0) {
+      console.log('  (暂无表)');
+    } else {
+      tables.forEach(table => {
+        console.log(`  - ${Object.values(table)[0]}`);
+      });
+    }
+    
+    return true;
+    
+  } catch (error) {
+    console.error('❌ 数据库连接失败:', error.message);
+    return false;
+  } finally {
+    if (connection) {
+      await connection.end();
+      console.log('🔌 数据库连接已关闭');
+    }
+  }
+}
+
+// 运行测试
+testConnection().then(success => {
+  if (success) {
+    console.log('🎉 数据库连接测试完成！');
+  } else {
+    console.log('💥 数据库连接测试失败！');
+  }
+  process.exit(success ? 0 : 1);
+});