初始化项目

backend/src/main/java/com/bycrm/service/impl/DealerServiceImpl.java

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+package com.bycrm.service.impl;
+
+import com.bycrm.common.Constants;
+import com.bycrm.dto.DealerDTO;
+import com.bycrm.entity.Dealer;
+import com.bycrm.entity.User;
+import com.bycrm.exception.BusinessException;
+import com.bycrm.mapper.DealerMapper;
+import com.bycrm.mapper.UserMapper;
+import com.bycrm.service.DealerService;
+import org.springframework.beans.BeanUtils;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+/**
+ * 经销商服务实现
+ */
+@Service
+public class DealerServiceImpl implements DealerService {
+
+    private final DealerMapper dealerMapper;
+    private final UserMapper userMapper;
+    private final BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
+
+    public DealerServiceImpl(DealerMapper dealerMapper, UserMapper userMapper) {
+        this.dealerMapper = dealerMapper;
+        this.userMapper = userMapper;
+    }
+
+    @Override
+    public List<Dealer> getDealerList(String name, String code, Integer status) {
+        return dealerMapper.selectList(name, code, status);
+    }
+
+    @Override
+    public Dealer getDealerById(Long id) {
+        Dealer dealer = dealerMapper.selectById(id);
+        if (dealer == null) {
+            throw new BusinessException("经销商不存在");
+        }
+        return dealer;
+    }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void createDealer(DealerDTO dealerDTO) {
+        // 检查编码是否重复
+        Dealer existingDealer = dealerMapper.selectByCode(dealerDTO.getCode());
+        if (existingDealer != null) {
+            throw new BusinessException("经销商账号已存在");
+        }
+
+        Dealer dealer = new Dealer();
+        BeanUtils.copyProperties(dealerDTO, dealer);
+        dealer.setCreatedAt(LocalDateTime.now());
+        dealer.setUpdatedAt(LocalDateTime.now());
+
+        dealerMapper.insert(dealer);
+
+        // 创建对应的用户账号
+        User user = new User();
+        user.setUsername(dealerDTO.getCode()); // 用户名使用经销商编码
+        user.setRealName(dealerDTO.getContactPerson());
+        user.setDealerId(dealer.getId());
+        user.setRole(Constants.USER_ROLE_DEALER); // 经销商用户角色
+        user.setStatus(dealerDTO.getStatus());
+
+        // 设置密码：如果提供了密码则使用提供的密码，否则使用默认密码
+        String password = dealerDTO.getPassword();
+        if (password == null || password.trim().isEmpty()) {
+            password = "123456"; // 默认密码
+        }
+        user.setPassword(passwordEncoder.encode(password));
+        user.setCreatedAt(LocalDateTime.now());
+        user.setUpdatedAt(LocalDateTime.now());
+
+        userMapper.insert(user);
+    }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void updateDealer(Long id, DealerDTO dealerDTO) {
+        Dealer existingDealer = dealerMapper.selectById(id);
+        if (existingDealer == null) {
+            throw new BusinessException("经销商不存在");
+        }
+
+        // 如果修改了编码，需要检查新编码是否与其他经销商重复
+        if (!existingDealer.getCode().equals(dealerDTO.getCode())) {
+            Dealer codeDealer = dealerMapper.selectByCode(dealerDTO.getCode());
+            if (codeDealer != null && !codeDealer.getId().equals(id)) {
+                throw new BusinessException("经销商账号已存在");
+            }
+        }
+
+        Dealer dealer = new Dealer();
+        BeanUtils.copyProperties(dealerDTO, dealer);
+        dealer.setId(id);
+        dealer.setUpdatedAt(LocalDateTime.now());
+
+        dealerMapper.update(dealer);
+    }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void deleteDealer(Long id) {
+        Dealer dealer = dealerMapper.selectById(id);
+        if (dealer == null) {
+            throw new BusinessException("经销商不存在");
+        }
+
+        dealerMapper.deleteById(id);
+    }
+}