删除短信渠道时，增加校验是否有模板

src/main/java/cn/iocoder/dashboard/modules/system/controller/sms/vo/channel/SysSmsChannelBaseVO.java

@@ -35,5 +35,4 @@ public class SysSmsChannelBaseVO {
     @URL(message = "回调 URL 格式不正确")
     private String callbackUrl;
 
-
 }

src/main/java/cn/iocoder/dashboard/modules/system/dal/mysql/sms/SysSmsTemplateMapper.java

@@ -41,4 +41,8 @@ public interface SysSmsTemplateMapper extends BaseMapperX<SysSmsTemplateDO> {
                 .orderByDesc("id"));
     }
 
+    default Integer selectCountByChannelId(Long channelId) {
+        return selectCount("channel_id", channelId);
+    }
+
 }

src/main/java/cn/iocoder/dashboard/modules/system/enums/SysErrorCodeConstants.java

@@ -81,6 +81,7 @@ public interface SysErrorCodeConstants {
     // ========== 短信渠道 1002011000 ==========
     ErrorCode SMS_CHANNEL_NOT_EXISTS = new ErrorCode(1002011000, "短信渠道不存在");
     ErrorCode SMS_CHANNEL_DISABLE = new ErrorCode(1002011001, "短信渠道不处于开启状态，不允许选择");
+    ErrorCode SMS_CHANNEL_HAS_CHILDREN = new ErrorCode(1002011002, "无法删除，该短信渠道还有短信模板");
 
     // ========== 短信模板 1002011000 ==========
     ErrorCode SMS_TEMPLATE_NOT_EXISTS = new ErrorCode(1002011000, "短信模板不存在");

src/main/java/cn/iocoder/dashboard/modules/system/service/sms/SysSmsTemplateService.java

@@ -91,4 +91,12 @@ public interface SysSmsTemplateService {
      */
     List<SysSmsTemplateDO> getSmsTemplateList(SysSmsTemplateExportReqVO exportReqVO);
 
+    /**
+     * 获得指定短信渠道下的短信模板数量
+     *
+     * @param channelId 短信渠道编号
+     * @return 数量
+     */
+    Integer countByChannelId(Long channelId);
+
 }

src/main/java/cn/iocoder/dashboard/modules/system/service/sms/impl/SysSmsChannelServiceImpl.java

@@ -11,6 +11,7 @@ import cn.iocoder.dashboard.modules.system.convert.sms.SysSmsChannelConvert;
 import cn.iocoder.dashboard.modules.system.dal.dataobject.sms.SysSmsChannelDO;
 import cn.iocoder.dashboard.modules.system.dal.mysql.sms.SysSmsChannelMapper;
 import cn.iocoder.dashboard.modules.system.service.sms.SysSmsChannelService;
+import cn.iocoder.dashboard.modules.system.service.sms.SysSmsTemplateService;
 import org.springframework.stereotype.Service;
 
 import javax.annotation.PostConstruct;
@@ -19,6 +20,7 @@ import java.util.Collection;
 import java.util.List;
 
 import static cn.iocoder.dashboard.common.exception.util.ServiceExceptionUtil.exception;
+import static cn.iocoder.dashboard.modules.system.enums.SysErrorCodeConstants.SMS_CHANNEL_HAS_CHILDREN;
 import static cn.iocoder.dashboard.modules.system.enums.SysErrorCodeConstants.SMS_CHANNEL_NOT_EXISTS;
 
 /**
@@ -36,6 +38,9 @@ public class SysSmsChannelServiceImpl implements SysSmsChannelService {
     @Resource
     private SysSmsChannelMapper smsChannelMapper;
 
+    @Resource
+    private SysSmsTemplateService smsTemplateService;
+
     @Override
     @PostConstruct
     public void initSmsClients() {
@@ -70,6 +75,10 @@ public class SysSmsChannelServiceImpl implements SysSmsChannelService {
     public void deleteSmsChannel(Long id) {
         // 校验存在
         this.validateSmsChannelExists(id);
+        // 校验是否有字典数据
+        if (smsTemplateService.countByChannelId(id) > 0) {
+            throw exception(SMS_CHANNEL_HAS_CHILDREN);
+        }
         // 更新
         smsChannelMapper.deleteById(id);
     }

src/main/java/cn/iocoder/dashboard/modules/system/service/sms/impl/SysSmsTemplateServiceImpl.java

@@ -21,7 +21,6 @@ import cn.iocoder.dashboard.modules.system.service.sms.SysSmsTemplateService;
 import com.google.common.annotations.VisibleForTesting;
 import org.springframework.stereotype.Service;
 import org.springframework.util.Assert;
-import org.springframework.validation.annotation.Validated;
 
 import javax.annotation.Resource;
 import java.util.Collection;
@@ -40,7 +39,6 @@ import static cn.iocoder.dashboard.modules.system.enums.SysErrorCodeConstants.*;
  * @date 2021/1/25 9:25
  */
 @Service
-@Validated
 public class SysSmsTemplateServiceImpl implements SysSmsTemplateService {
 
     /**
@@ -142,6 +140,11 @@ public class SysSmsTemplateServiceImpl implements SysSmsTemplateService {
         return smsTemplateMapper.selectList(exportReqVO);
     }
 
+    @Override
+    public Integer countByChannelId(Long channelId) {
+        return smsTemplateMapper.selectCountByChannelId(channelId);
+    }
+
     @VisibleForTesting
     public SysSmsChannelDO checkSmsChannel(Long channelId) {
         SysSmsChannelDO channelDO = smsChannelService.getSmsChannel(channelId);

src/test/java/cn/iocoder/dashboard/modules/system/service/sms/SysSmsChannelServiceTest.java

@@ -20,12 +20,15 @@ import javax.annotation.Resource;
 import java.util.function.Consumer;
 
 import static cn.hutool.core.util.RandomUtil.randomEle;
+import static cn.iocoder.dashboard.modules.system.enums.SysErrorCodeConstants.SMS_CHANNEL_HAS_CHILDREN;
 import static cn.iocoder.dashboard.modules.system.enums.SysErrorCodeConstants.SMS_CHANNEL_NOT_EXISTS;
 import static cn.iocoder.dashboard.util.AssertUtils.assertPojoEquals;
 import static cn.iocoder.dashboard.util.AssertUtils.assertServiceException;
 import static cn.iocoder.dashboard.util.RandomUtils.*;
 import static cn.iocoder.dashboard.util.date.DateUtils.buildTime;
 import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.when;
 
 /**
 * {@link SysSmsChannelServiceImpl} 的单元测试类
@@ -44,6 +47,9 @@ public class SysSmsChannelServiceTest extends BaseDbUnitTest {
     @Resource
     private SysSmsChannelMapper smsChannelMapper;
 
+    @MockBean
+    private SysSmsTemplateService smsTemplateService;
+
     @Test
     public void testCreateSmsChannel_success() {
         // 准备参数
@@ -67,6 +73,7 @@ public class SysSmsChannelServiceTest extends BaseDbUnitTest {
         SysSmsChannelUpdateReqVO reqVO = randomPojo(SysSmsChannelUpdateReqVO.class, o -> {
             o.setId(dbSmsChannel.getId()); // 设置更新的 ID
             o.setStatus(randomCommonStatus());
+            o.setCallbackUrl(randomString());
         });
 
         // 调用
@@ -108,6 +115,20 @@ public class SysSmsChannelServiceTest extends BaseDbUnitTest {
         assertServiceException(() -> smsChannelService.deleteSmsChannel(id), SMS_CHANNEL_NOT_EXISTS);
     }
 
+    @Test
+    public void testDeleteSmsChannel_hasChildren() {
+        // mock 数据
+        SysSmsChannelDO dbSmsChannel = randomSmsChannelDO();
+        smsChannelMapper.insert(dbSmsChannel);// @Sql: 先插入出一条存在的数据
+        // 准备参数
+        Long id = dbSmsChannel.getId();
+        // mock 方法
+        when(smsTemplateService.countByChannelId(eq(id))).thenReturn(10);
+
+        // 调用, 并断言异常
+        assertServiceException(() -> smsChannelService.deleteSmsChannel(id), SMS_CHANNEL_HAS_CHILDREN);
+    }
+
     @Test
     public void testGetSmsChannelPage() {
        // mock 数据