删除用户判断

ruoyi-system/pom.xml

@@ -22,6 +22,10 @@
             <groupId>com.ruoyi</groupId>
             <artifactId>ruoyi-common</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
 
     </dependencies>
 

ruoyi-system/src/main/java/com/ruoyi/system/domain/vo/UserCountVo.java

+package com.ruoyi.system.domain.vo;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Builder;
+import lombok.Data;
+
+
+@Data
+@Builder
+@ApiModel("检验员VO")
+public class UserCountVo {
+
+    @ApiModelProperty("检验员id")
+    private Long userId;
+
+    @ApiModelProperty("用户所进行任务数量")
+    private Long countNum;
+
+    @ApiModelProperty("用户名")
+    private String nikeName;
+}

ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysUserMapper.java

 package com.ruoyi.system.mapper;
 
 import java.util.List;
+import com.ruoyi.system.domain.vo.UserCountVo;
 import org.apache.ibatis.annotations.Param;
 import com.ruoyi.common.core.domain.entity.SysUser;
 
@@ -138,4 +139,11 @@ public interface SysUserMapper
      * @return
      */
     List<SysUser> selectUserListByRoleId(@Param("roleId") Long roleId);
+
+    /**
+     * 查询用户所含进行中任务数
+     * @param userIds
+     * @return
+     */
+    List<UserCountVo> countTaskByUserId(@Param("userIds") Long[] userIds);
 }

ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java

@@ -6,6 +6,7 @@ import java.util.stream.Collectors;
 import javax.validation.Validator;
 
 import com.ruoyi.common.core.domain.entity.SysDept;
+import com.ruoyi.system.domain.vo.UserCountVo;
 import com.ruoyi.system.mapper.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -475,6 +476,17 @@ public class SysUserServiceImpl implements ISysUserService
             checkUserAllowed(new SysUser(userId));
             checkUserDataScope(userId);
         }
+        List<UserCountVo> list = userMapper.countTaskByUserId(userIds);
+        StringBuilder msg = new StringBuilder();
+        for (UserCountVo countVo : list) {
+            if (countVo.getCountNum() > 0) {
+                msg.append(countVo.getNikeName()).append("、");
+            }
+        }
+        if (StringUtils.isNotEmpty(msg.toString())) {
+            msg = new StringBuilder(msg.substring(0, msg.length() - 1));
+            throw new ServiceException("用户：" + msg +"存在进行中的任务，不能删除");
+        }
         // 删除用户与角色关联
         userRoleMapper.deleteUserRole(userIds);
         // 删除用户与岗位关联

ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml

@@ -229,5 +229,16 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
  			#{userId}
         </foreach> 
  	</delete>
+	<select id="countTaskByUserId" resultType="com.ruoyi.system.domain.vo.UserCountVo">
+		select count(*) countNum, tr.user_id userId, s.nick_name nikeName
+		from t_task t
+		left join t_task_user_relation tr on tr.task_id = t.id
+		left join sys_user s on s.user_id = tr.user_id
+		where t.task_status in ('NEW','PENDING') and tr.user_id in
+		<foreach item="item" collection="userIds" open="(" separator="," close=")">
+			#{item}
+		</foreach>
+		group by tr.user_id
+	</select>
 	
 </mapper> 
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