上下级增删改查以及防止成环

src/main/java/top/suyiiyii/sims/controller/HierarchyController.java

@@ -0,0 +1,85 @@
+package top.suyiiyii.sims.controller;
+
+import io.swagger.v3.oas.annotations.Operation;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import top.suyiiyii.sims.common.AuthAccess;
+import top.suyiiyii.sims.common.Result;
+import top.suyiiyii.sims.dto.UserDto;
+import top.suyiiyii.sims.entity.User;
+import top.suyiiyii.sims.exception.ServiceException;
+import top.suyiiyii.sims.service.HierarchyService;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@RestController
+@RequestMapping("/hierarchy")
+public class HierarchyController {
+
+    @Autowired
+    private HierarchyService hierarchyService;
+
+    @GetMapping("/{userId}/SuperiorUser")
+    @Operation(summary = "获取用户的上级（管理员）")
+    @AuthAccess(allowRoles = {"admin"})
+    public UserDto getSuperiorUser(@PathVariable int userId) {
+        User user = hierarchyService.getSuperiorUser(userId);
+        if (user == null) {
+            throw new ServiceException("该用户没有上级");
+        }
+        return new UserDto(user);
+    }
+
+    @GetMapping("/{userId}/subordinateUser")
+    @Operation(summary = "获取用户的下级（管理员）")
+    @AuthAccess(allowRoles = {"admin"})
+    public List<UserDto> getSubordinateUser(@PathVariable int userId) {
+        List<User> users = hierarchyService.getSubordinateUser(userId);
+        if (users == null || users.isEmpty()) {
+            throw new ServiceException("该用户没有下级");
+        }
+        return users.stream().map(UserDto::new).collect(Collectors.toList());
+    }
+
+    @PostMapping("/{userId}/SuperiorUser")
+    @Operation(summary = "设置用户的上级（管理员）")
+    @AuthAccess(allowRoles = {"admin"})
+
+    public Result setSuperiorUser(@PathVariable int userId, @RequestParam int superiorUserId) {
+        hierarchyService.setSuperiorUser(userId, superiorUserId);
+        return Result.success();
+    }
+
+    @DeleteMapping("/{userId}/SuperiorUser")
+    @Operation(summary = "删除用户的上级（管理员）")
+    @AuthAccess(allowRoles = {"admin"})
+    public Result deleteSuperiorUser(@PathVariable int userId) {
+        hierarchyService.setSuperiorUser(userId, 0);
+        return Result.success();
+    }
+
+    @GetMapping("/self/superiorUser")
+    @Operation(summary = "获取自己的上级")
+    @AuthAccess(allowRoles = {"user"})
+    public UserDto getSelfSuperiorUser(@RequestAttribute("userId") int userId) {
+        User user = hierarchyService.getSuperiorUser(userId);
+        if (user == null) {
+            throw new ServiceException("您没有上级");
+        }
+        return new UserDto(user);
+    }
+
+    @GetMapping("/self/subordinateUser")
+    @Operation(summary = "获取自己的下级")
+    @AuthAccess(allowRoles = {"user"})
+    public List<UserDto> getSelfSubordinateUser(@RequestAttribute("userId") int userId) {
+        List<User> users = hierarchyService.getSubordinateUser(userId);
+        if (users == null || users.isEmpty()) {
+            throw new ServiceException("您没有下级");
+        }
+        return users.stream().map(UserDto::new).collect(Collectors.toList());
+    }
+
+
+}

src/main/java/top/suyiiyii/sims/dto/UserDto.java

@@ -1,6 +1,9 @@
 package top.suyiiyii.sims.dto;
 
+import lombok.AllArgsConstructor;
 import lombok.Data;
+import lombok.NoArgsConstructor;
+import top.suyiiyii.sims.entity.User;
 
 import java.util.List;
 
@@ -13,6 +16,8 @@ import java.util.List;
  * @Version 1.0
  */
 @Data
+@AllArgsConstructor
+@NoArgsConstructor
 public class UserDto {
     private Integer userId;
     private Integer studentId;
@@ -20,4 +25,12 @@ public class UserDto {
     private String grade;
     private String userGroup;
     private List<String> roles; // 角色名称列表
+
+    public UserDto(User user) {
+        this.userId = user.getId();
+        this.studentId = user.getStudentId();
+        this.username = user.getUsername();
+        this.grade = user.getGrade();
+        this.userGroup = user.getUserGroup();
+    }
 }

src/main/java/top/suyiiyii/sims/entity/HierarchyRelation.java

@@ -2,7 +2,9 @@ package top.suyiiyii.sims.entity;
 
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
+import com.tangzc.mpe.autotable.annotation.Column;
 import com.tangzc.mpe.autotable.annotation.Table;
+import jakarta.validation.constraints.NotNull;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
@@ -24,9 +26,13 @@ public class HierarchyRelation {
     private Integer id;
 
     // 上级用户ID
+    @NotNull
+    @Column(defaultValue = "0")
     private Integer superiorUserId;
 
     // 下级用户ID
+
+    @NotNull
     private Integer subordinateUserId;
 
 }

src/main/java/top/suyiiyii/sims/mapper/HierarchyMapper.java

@@ -0,0 +1,19 @@
+package top.suyiiyii.sims.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Select;
+import top.suyiiyii.sims.entity.HierarchyRelation;
+import top.suyiiyii.sims.entity.User;
+
+import java.util.List;
+
+public interface HierarchyMapper extends BaseMapper<HierarchyRelation> {
+
+    @Select("SELECT * FROM user WHERE id = " +
+            "(SELECT hierarchy_relation.superior_user_id FROM hierarchy_relation WHERE subordinate_user_id = #{userId})")
+    User getSuperiorUser(int userId);
+
+    @Select("SELECT * FROM user WHERE id = " +
+            "(SELECT hierarchy_relation.subordinate_user_id FROM hierarchy_relation WHERE superior_user_id = #{userId})")
+    List<User> getSubordinateUser(int userId);
+}

src/main/java/top/suyiiyii/sims/service/HierarchyService.java

@@ -3,8 +3,16 @@ package top.suyiiyii.sims.service;
 import com.baomidou.mybatisplus.extension.service.IService;
 import org.springframework.stereotype.Service;
 import top.suyiiyii.sims.entity.HierarchyRelation;
+import top.suyiiyii.sims.entity.User;
+
+import java.util.List;
 
 @Service
 public interface HierarchyService extends IService<HierarchyRelation> {
+    public User getSuperiorUser(int UserId);
 
+    public List<User> getSubordinateUser(int userId);
+
+
+    void setSuperiorUser(int userId, int superiorUserId);
 }

src/main/java/top/suyiiyii/sims/service/UserService.java

@@ -8,13 +8,11 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 import top.suyiiyii.sims.controller.UserController;
 import top.suyiiyii.sims.dto.UserDto;
+import top.suyiiyii.sims.entity.HierarchyRelation;
 import top.suyiiyii.sims.entity.Role;
 import top.suyiiyii.sims.entity.User;
 import top.suyiiyii.sims.exception.ServiceException;
-import top.suyiiyii.sims.mapper.MpUserMapper;
-import top.suyiiyii.sims.mapper.PermissionsMapper;
-import top.suyiiyii.sims.mapper.RoleMapper;
-import top.suyiiyii.sims.mapper.UserMapper;
+import top.suyiiyii.sims.mapper.*;
 import top.suyiiyii.sims.utils.JwtUtils;
 
 import java.util.ArrayList;
@@ -44,6 +42,8 @@ public class UserService {
     private RbacService rbacService;
     @Autowired
     private ModelMapper modelMapper;
+    @Autowired
+    private HierarchyMapper hierarchyMapper;
 
     public void deleteUser(int id) {
         userMapper.deleteUser(id);
@@ -77,6 +77,7 @@ public class UserService {
         mpUserMapper.insert(user);
         user = mpUserMapper.selectOne(new LambdaQueryWrapper<User>().eq(User::getUsername, req.getUsername()));
         rbacService.addRoleWithUserId(user.getId(), "user");
+        hierarchyMapper.insert(new HierarchyRelation(null,0, user.getId()));
     }
 
 

src/main/java/top/suyiiyii/sims/service/impl/HierarchyServiceImpl.java

@@ -1,11 +1,52 @@
 package top.suyiiyii.sims.service.impl;
 
-import com.baomidou.mybatisplus.extension.service.IService;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import top.suyiiyii.sims.entity.HierarchyRelation;
+import top.suyiiyii.sims.entity.User;
+import top.suyiiyii.sims.exception.ServiceException;
+import top.suyiiyii.sims.mapper.HierarchyMapper;
+import top.suyiiyii.sims.mapper.MpUserMapper;
 import top.suyiiyii.sims.service.HierarchyService;
 
-@Service
-public class HierarchyServiceImpl implements ServiceImpl<Hierarchy> implements HierarchyService {
+import java.util.List;
 
+@Service
+public class HierarchyServiceImpl extends ServiceImpl<HierarchyMapper, HierarchyRelation> implements HierarchyService {
+
+    @Autowired
+    MpUserMapper userMapper;
+    @Override
+    public User getSuperiorUser(int UserId) {
+        return baseMapper.getSuperiorUser(UserId);
+    }
+
+    @Override
+    public List<User> getSubordinateUser(int userId) {
+        return baseMapper.getSubordinateUser(userId);
+    }
+
+    @Override
+    public void setSuperiorUser(int userId, int superiorUserId) {
+        if (userId == superiorUserId) {
+            throw new ServiceException("不能设置自己为上级");
+        }
+        if (superiorUserId != 0 && userMapper.selectById(superiorUserId) == null) {
+            throw new ServiceException("上级用户不存在");
+        }
+
+        // 检测是否存在循环上级
+        User superiorUser = userMapper.selectById(superiorUserId);
+        while (superiorUser != null) {
+            if (superiorUser.getId() == userId) {
+                throw new ServiceException("不能设置自己的下级为上级");
+            }
+            superiorUser = getSuperiorUser(superiorUser.getId());
+        }
+
+        baseMapper.update(new LambdaUpdateWrapper<HierarchyRelation>().eq(HierarchyRelation::getSubordinateUserId, userId)
+                .set(HierarchyRelation::getSuperiorUserId, superiorUserId));
+    }
 }