目录

6.3 角色管理

6.3.1 查询所有角色

6.3.2 核心2：给角色授予权限(菜单)

6.3.3 添加角色

6.3 角色管理

6.3.1 查询所有角色

1）后端【已有】

2）前端

• 要求：左右分屏

​

​

6.3.2 核心2：给角色授予权限(菜单)

1）后端：查询所有的权限（含孩子）

• 方式1：在controller中排序查询所有，然后使用Map进行缓存处理，将所有权限拼凑成父子关系。

• 方式2：使用mapper注解版

  1. 编写PermMapper：查询指定父id的所有权限，需配置关联项（当前权限的所有的孩子）

  2. 编写service：查询所有

  3. 编写controller：查询所有

1. 编写PermMapper：查询指定父id的所有权限，需配置关联项（当前权限的所有的孩子）

   package com.czxy.classes.mapper;
   ​
   import com.baomidou.mybatisplus.core.mapper.BaseMapper;
   import com.czxy.sys.SysPermission;
   import org.apache.ibatis.annotations.*;
   ​
   import java.util.List;
   ​
   /*** @author 桐叔* @email liangtong@itcast.cn* @description*/
   @Mapper
   public interface SysPermissionMapper extends BaseMapper {/*** 通过父id查询所有的权限* @author 桐叔* @email liangtong@itcast.cn* @return*/@Select("SELECT * FROM sys_permission WHERE parent_id = #{parentId}")@Results({@Result(property = "id", column = "id"),@Result(property = "permName", column = "permName"),@Result(property = "parentId", column = "parent_id"),@Result(property = "path", column = "path"),@Result(property = "children", many = @Many(select = "com.czxy.classes.mapper.SysPermissionMapper.findAllByParentId"), column = "id")})public List findAllByParentId(@Param("parentId") Integer parentId) ;
   ​
   ​
   }
   ​

2. 编写service：查询所有

   • 接口

     @Service
     @Transactional
     public interface SysPermissionService extends IService {
     ​
     ​public List findAllByParentId(Integer parentId) ;
     }
     ​

   • 实现类

     package com.czxy.classes.service.impl;
     ​
     import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
     import com.czxy.classes.mapper.SysPermissionMapper;
     import com.czxy.classes.service.SysPermissionService;
     import com.czxy.sys.SysPermission;
     import org.springframework.stereotype.Service;
     import org.springframework.transaction.annotation.Transactional;
     ​
     import java.util.List;
     ​
     /*** @author 桐叔* @email liangtong@itcast.cn* @description*/
     @Service
     @Transactional
     public class SysPermissionServiceImpl extends ServiceImpl implements SysPermissionService {
     ​@Overridepublic List findAllByParentId(Integer parentId) {return baseMapper.findAllByParentId(parentId);}
     }
     ​

3. 编写controller：查询所有

   package com.czxy.classes.controller;
   ​
   import com.czxy.classes.service.SysPermissionService;
   import com.czxy.sys.SysPermission;
   import com.czxy.vo.BaseResult;
   import org.springframework.web.bind.annotation.GetMapping;
   import org.springframework.web.bind.annotation.PathVariable;
   import org.springframework.web.bind.annotation.RequestMapping;
   import org.springframework.web.bind.annotation.RestController;
   ​
   import javax.annotation.Resource;
   import java.util.List;
   ​
   /*** @author 桐叔* @email liangtong@itcast.cn* @description*/
   @RestController
   @RequestMapping("/perm")
   public class SysPermissionController {@Resourceprivate SysPermissionService sysPermissionService;
   ​
   ​/*** 查询所有，含孩子* @author 桐叔* @email liangtong@itcast.cn* @return*/@GetMapping("/parent/{parentId}")public BaseResult findAllByParentId(@PathVariable("parentId") Integer parentId) {// 查询List list = sysPermissionService.findAllByParentId(parentId);return BaseResult.ok("查询成功", list);}
   ​
   }
   ​

    

2）后端：查询指定角色的所有的权限

• 提交数据：roleId = 1

• 获得数据：[ {roleId: 1, permId: 1}, {roleId: 1, permId: 2}, ...] --> [1,2,3,4]

package com.czxy.classes.controller;
​
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.czxy.classes.service.SysRolePermissionService;
import com.czxy.sys.SysRolePermission;
import com.czxy.vo.BaseResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
​
import javax.annotation.Resource;
import java.util.List;
import java.util.stream.Collectors;
​
/*** @author 桐叔* @email liangtong@itcast.cn* @description*/
@RestController
@RequestMapping("/rolePerm")
public class SysRolePermissionController {@Resourceprivate SysRolePermissionService sysRolePermissionService;
​@GetMapping("/role/{roleId}")public BaseResult findAllByRoleId(@PathVariable("roleId") Integer roleId) {//1 条件 roleId = 1QueryWrapper queryWrapper = new QueryWrapper<>();queryWrapper.eq("role_id", roleId);
​//2 查询所有- 角色权限对象List list = sysRolePermissionService.list(queryWrapper);
​//3 处理数据，只需要权限idList roleIdList = list.stream().map(sysRolePermission -> sysRolePermission.getPermId()).collect(Collectors.toList());
​//4 返回return BaseResult.ok("查询成功", roleIdList);}
​
​
}
​

3）前端：展示所有的权限

• 编写变量、发送ajax查询、页面加载成功时调用

• 使用tree进行展示

  

   

​

​

4）前端：回显指定角色的权限

• 表格行的点击，并获得当前行的数据

• 查询当前角色对应的所有选线，并回显到tree中

    async findAllPermByRoleId(row, column, event) {// ajax 查询   /user-service/rolePerm/role/1let { data: baseResult } = await this.$axios.get(`/user-service/rolePerm/role/${row.id}`)// 处理if(baseResult.code == 20000) {// 查询成功，将查询的结果填充到右侧tree中this.$refs.permTree.setCheckedKeys(baseResult.data);} else {this.$message.error(baseResult.message)}}

​

​

5）前端：提交授权表单

​

​

6）后端：授权

• 编写controller

• 编写service

• 编写controller

  

   

      @PostMapping("/addPerm")public BaseResult addPermWithRoleId(@RequestBody SysRole sysRole) {try {// 添加权限sysRolePermissionService.addPermWithRoleId(sysRole);
  ​// 提示return BaseResult.ok("授权成功");} catch (Exception e) {return BaseResult.error("授权失败");}
  ​}

• 编写service

  

   

  • 接口

    @Service
    @Transactional
    public interface SysRolePermissionService extends IService {void addPermWithRoleId(SysRole sysRole);
    }

  • 实现类

    package com.czxy.classes.service.impl;
    ​
    import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
    import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
    import com.czxy.classes.mapper.SysRolePermissionMapper;
    import com.czxy.classes.service.SysRolePermissionService;
    import com.czxy.sys.SysRole;
    import com.czxy.sys.SysRolePermission;
    import org.springframework.stereotype.Service;
    import org.springframework.transaction.annotation.Transactional;
    ​
    /*** @author 桐叔* @email liangtong@itcast.cn* @description*/
    @Service
    @Transactional
    public class SysRolePermissionServiceImpl extends ServiceImpl implements SysRolePermissionService {
    ​@Overridepublic void addPermWithRoleId(SysRole sysRole) {// 1 删除QueryWrapper queryWrapper = new QueryWrapper<>();queryWrapper.eq("role_id", sysRole.getId());baseMapper.delete(queryWrapper);
    ​// 2 添加for (Integer permId : sysRole.getPermIds()) {SysRolePermission sysRolePermission = new SysRolePermission(sysRole.getId(), permId);baseMapper.insert(sysRolePermission);}}
    }
    ​

6.3.3 添加角色