重构后端服务架构并优化前端错误处理

backend/scripts/initData.js

@@ -1,78 +0,0 @@
-const User = require('../models/User');
-
-// 创建初始用户数据
-const createInitialUsers = async () => {
-  try {
-    // 检查是否已存在用户
-    const existingAdmin = await User.findOne({ where: { username: 'admin' } });
-    if (existingAdmin) {
-      console.log('✅ 初始用户已存在，跳过创建');
-      return;
-    }
-
-    // 创建管理员用户
-    const adminUser = await User.createUser({
-      username: 'admin',
-      password: 'admin123',
-      phone: '13800138000',
-      email: 'admin@niumall.com',
-      real_name: '系统管理员',
-      user_type: 'admin'
-    });
-
-    // 创建采购人用户
-    const buyerUser = await User.createUser({
-      username: 'buyer',
-      password: 'buyer123',
-      phone: '13800138001',
-      email: 'buyer@niumall.com',
-      real_name: '采购经理',
-      user_type: 'client'
-    });
-
-    // 创建贸易商用户
-    const traderUser = await User.createUser({
-      username: 'trader',
-      password: 'trader123',
-      phone: '13800138002',
-      email: 'trader@niumall.com',
-      real_name: '贸易商经理',
-      user_type: 'staff'
-    });
-
-    // 创建供应商用户
-    const supplierUser = await User.createUser({
-      username: 'supplier',
-      password: 'supplier123',
-      phone: '13800138003',
-      email: 'supplier@niumall.com',
-      real_name: '供应商代表',
-      user_type: 'supplier'
-    });
-
-    // 创建司机用户
-    const driverUser = await User.createUser({
-      username: 'driver',
-      password: 'driver123',
-      phone: '13800138004',
-      email: 'driver@niumall.com',
-      real_name: '运输司机',
-      user_type: 'driver'
-    });
-
-    console.log('✅ 初始用户创建成功');
-    console.log('👤 用户账号信息:');
-    console.log('   管理员: admin / admin123');
-    console.log('   采购人: buyer / buyer123');
-    console.log('   贸易商: trader / trader123');
-    console.log('   供应商: supplier / supplier123');
-    console.log('   司机: driver / driver123');
-
-  } catch (error) {
-    console.error('❌ 创建初始用户失败:', error);
-  }
-};
-
-module.exports = {
-  createInitialUsers
-};