重构后端服务架构并优化前端错误处理

backend/config/database.js

@@ -1,55 +1,58 @@
-const { Sequelize } = require('sequelize');
+// 数据库配置文件
 require('dotenv').config();
 
-// 数据库连接配置
-const sequelize = new Sequelize({
-  host: process.env.DB_HOST || '129.211.213.226',
-  port: process.env.DB_PORT || 9527,
-  database: process.env.DB_NAME || 'jiebandata',
-  username: process.env.DB_USER || 'root',
-  password: process.env.DB_PASSWORD || 'aiotAiot123!',
-  dialect: process.env.DB_DIALECT || 'mysql',
-  logging: process.env.NODE_ENV === 'development' ? console.log : false,
-  pool: {
-    max: 5,
-    min: 0,
-    acquire: 30000,
-    idle: 10000
-  },
-  define: {
-    timestamps: true,
-    underscored: true,
-    freezeTableName: true
-  },
-  timezone: '+08:00'
-});
-
-// 测试数据库连接
-const testConnection = async () => {
-  try {
-    await sequelize.authenticate();
-    console.log('✅ 数据库连接成功');
-    return true;
-  } catch (error) {
-    console.error('❌ 数据库连接失败:', error.message);
-    return false;
-  }
-};
-
-// 同步数据库模型
-const syncDatabase = async (options = {}) => {
-  try {
-    await sequelize.sync(options);
-    console.log('✅ 数据库同步成功');
-  } catch (error) {
-    console.error('❌ 数据库同步失败:', error);
-    throw error;
-  }
-};
-
 module.exports = {
-  sequelize,
-  testConnection,
-  syncDatabase,
-  Sequelize
+  development: {
+    username: process.env.DB_USERNAME || 'root',
+    password: process.env.DB_PASSWORD || 'aiotAiot123!',
+    database: process.env.DB_NAME || 'jiebandata',
+    host: process.env.DB_HOST || '129.211.213.226',
+    port: process.env.DB_PORT || 9527,
+    dialect: 'mysql',
+    dialectOptions: {
+      charset: 'utf8mb4',
+      dateStrings: true,
+      typeCast: true
+    },
+    timezone: '+08:00',
+    logging: console.log,
+    pool: {
+      max: 20,
+      min: 0,
+      acquire: 60000,
+      idle: 10000
+    }
+  },
+  test: {
+    username: process.env.TEST_DB_USERNAME || 'root',
+    password: process.env.TEST_DB_PASSWORD || 'aiotAiot123!',
+    database: process.env.TEST_DB_NAME || 'jiebandata_test',
+    host: process.env.TEST_DB_HOST || '129.211.213.226',
+    port: process.env.TEST_DB_PORT || 9527,
+    dialect: 'mysql',
+    dialectOptions: {
+      charset: 'utf8mb4'
+    },
+    timezone: '+08:00',
+    logging: false
+  },
+  production: {
+    username: process.env.DB_USERNAME,
+    password: process.env.DB_PASSWORD,
+    database: process.env.DB_NAME,
+    host: process.env.DB_HOST,
+    port: process.env.DB_PORT,
+    dialect: 'mysql',
+    dialectOptions: {
+      charset: 'utf8mb4'
+    },
+    timezone: '+08:00',
+    logging: false,
+    pool: {
+      max: 50,
+      min: 5,
+      acquire: 60000,
+      idle: 10000
+    }
+  }
 };