refactor(backend): 优化API文档、认证路由和分页查询，统一响应格式并添加字段验证

backend/check_tables.js

@@ -0,0 +1,42 @@
+const mysql = require('mysql2');
+
+async function checkTables() {
+  const connection = mysql.createConnection({
+    host: process.env.DB_HOST || 'nj-cdb-3pwh2kz1.sql.tencentcdb.com',
+    port: process.env.DB_PORT || 20784,
+    user: process.env.DB_USER || 'jiebanke',
+    password: process.env.DB_PASSWORD || 'aiot741$12346',
+    database: process.env.DB_NAME || 'niumall'
+  });
+
+  try {
+    console.log('连接到远程数据库...');
+    
+    // 获取所有表名
+    const [tables] = await connection.promise().query('SHOW TABLES');
+    console.log('数据库中的表:');
+    tables.forEach(table => {
+      const tableName = table[`Tables_in_${process.env.DB_NAME || 'niumall'}`];
+      console.log(`- ${tableName}`);
+    });
+
+    // 获取每个表的详细信息
+    console.log('\n表结构详情:');
+    for (const table of tables) {
+      const tableName = table[`Tables_in_${process.env.DB_NAME || 'niumall'}`];
+      console.log(`\n表 ${tableName}:`);
+      
+      const [columns] = await connection.promise().query(`DESCRIBE ${tableName}`);
+      columns.forEach(column => {
+        console.log(`  ${column.Field} (${column.Type}) ${column.Null === 'YES' ? 'NULL' : 'NOT NULL'} ${column.Key ? `KEY: ${column.Key}` : ''} ${column.Default ? `DEFAULT: ${column.Default}` : ''}`);
+      });
+    }
+
+  } catch (error) {
+    console.error('数据库连接错误:', error.message);
+  } finally {
+    await connection.end();
+  }
+}
+
+checkTables();