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18—实现权限菜单管理（三）

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18—实现权限菜单管理（三）完成编辑图标功能，并且显示出来

1、完成图标功能

要实现图标功能，首先是后端建表

  1. 建dict表
DROP TABLE IF EXISTS `dict`;

CREATE TABLE `dict` (
  `name` varchar(255) DEFAULT NULL COMMENT '名称',
  `value` varchar(255) DEFAULT NULL COMMENT '内容',
  `type` varchar(255) DEFAULT NULL COMMENT '类型'
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
insert  into `dict`(`name`,`value`,`type`) values 

('user','el-icon-user','icon'),

('house','el-icon-house','icon'),

('menu','el-icon-menu','icon'),

('s-custom','el-icon-s-custom','icon'),

('s-menu','el-icon-s-grid','icon'),

('file','el-icon-document','icon');
  1. Dict实体类

Dict.java

@Data
@AllArgsConstructor
@NoArgsConstructor
@TableName("dict")
public class Dict { 
   
    private String name;
    private String value;
    private String type;
}
  1. DictMapper.java
@Repository
public interface DictMapper extends BaseMapper<Dict> { 
   
}
  1. DictService.java
@Service
public class DictService extends ServiceImpl<DictMapper, Dict> { 
   
}
  1. 图标功能是在菜单管理里面显示，所以实现功能写在MenuController中

MenuController.java

   //查找图标信息
    @GetMapping("/icons")
    public Result getIcons(){ 
   
        QueryWrapper<Dict> queryWrapper = new QueryWrapper<>();
        //查询type为icon的数据
        queryWrapper.eq("type", Constants.DICT_TYPE_ICON);
        return Result.success(dictService.list(queryWrapper));
    }
  1. 前端实现菜单管理里编辑，可以下拉选择图标，如

[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-GJscqE2B-1673355144545)(D:\桌面\Java学习\项目\管理系统–前后端分离\项目截图\46.jpg)]

  1. 前端实现角色管理页面，分配菜单的时候，同样显示图标出来

[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-XbCYwnVm-1673355144546)(D:\桌面\Java学习\项目\管理系统–前后端分离\项目截图\47.jpg)]

 <span class="custom-tree-node" slot-scope="{data}">
                <span><i :class="data.icon"></i> {
  
  { data.name }}</span>
            </span>
  1. 完整代码

Menu.vue

<template>
    <div>
     <div style="padding:10px 0">
       <el-input style="width:200px" placeholder="请输入名称" suffix-icon="el-icon-search" v-model="name"></el-input>
       <el-button class="ml-5" type="primary" @click="load">搜索</el-button>
       <el-button  type="warning" @click="reset">重置</el-button>
      
     </div>

     <div style="margin:10px 0">
       <el-button type="primary" @click="handleAdd()">新增<i class="el-icon-circle-plus-outline"></i></el-button>
       <el-popconfirm
                class="ml-5"
                confirm-button-text='确定'
                cancel-button-text='我再想想'
                icon="el-icon-info"
                icon-color="red"
                title="您确定要删除这些内容吗？"
                @confirm="delBatch"
          >
          <el-button type="danger"  slot="reference">批量删除<i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
     </div>
     <el-table :data="tableData" border stripe :header-cell-calss-name="'headerBg'" 
                row-key="id"  default-expand-all   @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55"></el-table-column>
      <el-table-column prop="id" label="ID" width="80"></el-table-column>
       <el-table-column prop="name" label="名称" ></el-table-column>
       <el-table-column prop="path" label="路径" ></el-table-column>
       <el-table-column label="图标" class-name="fontSize18" align="center" label-class-name="fontSize12" >
          <template slot-scope="scope">
            <i :class="scope.row.icon" />
          </template>
       </el-table-column>
       <el-table-column prop="description" label="描述" ></el-table-column>
       <el-table-column label="操作" width="300" align="center">
         <template slot-scope="scope" >
          <!--没有路径（说明有子菜单）和没有父级（说明会有子菜单）才加新增子菜单的按钮 -->
          <el-button type="primary" @click="handleMenuAdd(scope.row.id)" v-if="!scope.row.pid && !scope.row.path">新增子菜单 <i class="el-icon-plus"></i></el-button>
           <el-button type="success" @click="handleUpdate(scope.row)">编辑 <i class="el-icon-edit"></i></el-button>
          <el-popconfirm
                class="ml-5"
                confirm-button-text='确定'
                cancel-button-text='我再想想'
                icon="el-icon-info"
                icon-color="red"
                title="您确定要删除吗？"
                @confirm="handleDelete(scope.row.id)"
          >
          <el-button type="danger" slot="reference">删除<i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
         </template>
       </el-table-column>
     </el-table>

      <el-dialog title="菜单信息" :visible.sync="dialogFormVisible" width="30%">
        <el-form label-width="80px" size="small">
          <el-form-item label="名称" >
            <el-input v-model="form.name" autocomplete="off"></el-input>
          </el-form-item>
          <el-form-item label="路径" >
            <el-input v-model="form.path" autocomplete="off"></el-input>
          </el-form-item>
          <el-form-item label="图标" >
            <el-select clearable v-model="form.icon" placeholder="请选择" style="width:100%">
                <el-option v-for="item in options" :key="item.name" :label="item.name" :value="item.value">
                  <i :class="item.value"/> {
  
  { item.name }}
                </el-option>
              </el-select>
          </el-form-item>
          <el-form-item label="描述" >
            <el-input v-model="form.description" autocomplete="off"></el-input>
          </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button @click="dialogFormVisible = false">取 消</el-button>
          <el-button type="primary" @click="save">确 定</el-button>
        </div>
      </el-dialog>
    </div>
</template>

<script>
export default{
    name:"User",
    data() {
     return {
       tableData:[],
       total: 0 ,
       pageNum:1,
       pageSize:4,
       name:"",
       form:{},
       dialogFormVisible:false,
       multipleSelection:[],
       options:[]
     }
    },
    created(){
        this.load()

    },
    methods:{
        load(){
      this.request.get("/menu",{
        params:{
        name:this.name

      }
        }).then(res=>{
        this.tableData=res.data
      })
     },
     save(){
      this.request.post("/menu",this.form).then(res=>{
        if(res.data){
          this.$message.success("保存成功!")
          this.dialogFormVisible=false
          this.load()
        }else{
          this.$message.error("保存失败！")
        }
      })


     },
     handleAdd(){

      this.dialogFormVisible=true
      this.form={}
     },
     handleMenuAdd(pid){
      this.dialogFormVisible=true
      this.form={}
      if(pid){
        this.form.pid=pid
      }
     },
     handleUpdate(row){
      this.form= JSON.parse(JSON.stringify(row))
      this.dialogFormVisible=true
      //请求图标的数据
      this.request.get("/menu/icons").then(res => {
        this.options=res.data
      })
     },
     handleDelete(id){
      this.request.delete("/menu/" + id).then(res=>{
        if(res.data){
          this.$message.success("删除成功!")
          this.load()
        }else{
          this.$message.error("删除失败！")
        }
      })
     },
     delBatch(){
      let ids=this.multipleSelection.map(v => v.id)  //把对象数组转化为id数组【1,2,3】
      this.request.post("/menu/del/batch",ids).then(res=>{
        if(res.data){
          this.$message.success("批量删除成功!")
          this.load()
        }else{
          this.$message.error("批量删除失败！")
        }
      })

     },
     handleSelectionChange(val){
      this.multipleSelection=val



     },
     reset(){
      this.name=""
      this.load()

     },
    
     handleSizeChange(pageSize){
      this.pageSize=pageSize
      this.load()
     },
     handleCurrentChange(pageNum){
      this.pageNum=pageNum
      this.load()
     }

    }
}

</script>

<style>
.headerBg{
    background: #eee!important;
}
.fontSize18{
  font-size: 20px;
}
.fontSize12{
  font-size: 12px;
}
</style>

Role.vue

<template>
    <div>
     <div style="padding:10px 0">
       <el-input style="width:200px" placeholder="请输入名称" suffix-icon="el-icon-search" v-model="name"></el-input>
       <el-button class="ml-5" type="primary" @click="load">搜索</el-button>
       <el-button  type="warning" @click="reset">重置</el-button>
      
     </div>

     <div style="margin:10px 0">
       <el-button type="primary" @click="handleAdd">新增<i class="el-icon-circle-plus-outline"></i></el-button>
       <el-popconfirm
                class="ml-5"
                confirm-button-text='确定'
                cancel-button-text='我再想想'
                icon="el-icon-info"
                icon-color="red"
                title="您确定要删除这些内容吗？"
                @confirm="delBatch"
          >
          <el-button type="danger"  slot="reference">批量删除<i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
     </div>
     <el-table :data="tableData" border stripe :header-cell-calss-name="'headerBg'"    @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55"></el-table-column>
      <el-table-column prop="id" label="ID" width="80"></el-table-column>
       <el-table-column prop="name" label="名称" ></el-table-column>
       <el-table-column prop="description" label="描述" ></el-table-column>
       <el-table-column label="操作" width="280" align="center">
         <template slot-scope="scope" >
          <el-button type="info" @click="selectMenu(scope.row.id)">分配菜单<i class="el-icon-menu"></i></el-button>

           <el-button type="success" @click="handleUpdate(scope.row)">编辑 <i class="el-icon-edit"></i></el-button>
          <el-popconfirm
                class="ml-5"
                confirm-button-text='确定'
                cancel-button-text='我再想想'
                icon="el-icon-info"
                icon-color="red"
                title="您确定要删除吗？"
                @confirm="handleDelete(scope.row.id)"
          >
          <el-button type="danger" slot="reference">删除<i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
         </template>
       </el-table-column>
     </el-table>
     <div style="padding:10px 0">
       <el-pagination
       @size-change="handleSizeChange"
       @current-change="handleCurrentChange"
         :current-page="pageNum"
         :page-sizes="[2, 4, 6, 10]"
         :page-size="pageSize"
         layout="total, sizes, prev, pager, next, jumper"
         :total="total">
       </el-pagination>
     </div>

      <el-dialog title="角色信息" :visible.sync="dialogFormVisible" width="30%">
        <el-form label-width="80px" size="small">
          <el-form-item label="名称" >
            <el-input v-model="form.name" autocomplete="off"></el-input>
          </el-form-item>
          <el-form-item label="描述" >
            <el-input v-model="form.description" autocomplete="off"></el-input>
          </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button @click="dialogFormVisible = false">取 消</el-button>
          <el-button type="primary" @click="save">确 定</el-button>
        </div>
      </el-dialog>

      <el-dialog title="分配菜单" :visible.sync="menuDialogVisable" width="30%">
        <el-tree
            :props="props"
            :data="menuData"
            show-checkbox
            node-key="id"
            ref="tree"
            :default-expanded-keys="expands"
            :default-checked-keys="checks">
            <span class="custom-tree-node" slot-scope="{data}">
                <span><i :class="data.icon"></i> {
  
  { data.name }}</span>
            </span>
        </el-tree>
        <div slot="footer" class="dialog-footer">
          <el-button @click="menuDialogVisable = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleMenu">确 定</el-button>
        </div>
      </el-dialog>
    </div>
</template>

<script>
import { Tree } from 'element-ui'
export default{
    name:"User",
    data() {
     return {
       tableData:[],
       total: 0 ,
       pageNum:1,
       pageSize:4,
       name:"",
       form:{},
       dialogFormVisible:false,
       menuDialogVisable:false,
       multipleSelection:[],
       menuData: [],
       props:{
        label:'name'
       },
       expands:[],
       checks:[],
       roleId:0
     }
    },
    created(){
        this.load()
    },
    methods:{
        load(){
      this.request.get("/role/page",{
        params:{
        pageNum:this.pageNum,
        pageSize:this.pageSize,
        name:this.name

      }
        }).then(res=>{
        console.log(res)
        this.tableData=res.data.records
        this.total=res.data.total 
      })
     },
     save(){
      this.request.post("/role",this.form).then(res=>{
        if(res.data){
          this.$message.success("保存成功!")
          this.dialogFormVisible=false
          this.load()
        }else{
          this.$message.error("保存失败！")
        }
      })


     },
     saveRoleMenu(){
       this.request.post("/role/roleMenu/" + this.roleId,this.$refs.tree.getCheckedKeys()).then(res => {
          if(res.code === '200') {
            this.$message.success("绑定成功")
            this.menuDialogVisable = false
          }else{
            this.$message.error(res.msg) 
          }
       })

     },

     handleAdd(){

      this.dialogFormVisible=true
      this.form={}

     },
     handleUpdate(row){
      this.form={...row}
      this.dialogFormVisible=true
     
     },
     handleDelete(id){
      this.request.delete("/role/" + id).then(res=>{
        if(res.data){
          this.$message.success("删除成功!")
          this.load()
        }else{
          this.$message.error("删除失败！")
        }
      })
     },
     delBatch(){
      let ids=this.multipleSelection.map(v => v.id)  //把对象数组转化为id数组【1,2,3】
      this.request.post("/role/del/batch",ids).then(res=>{
        if(res.data){
          this.$message.success("批量删除成功!")
          this.load()
        }else{
          this.$message.error("批量删除失败！")
        }
      })

     },
     handleSelectionChange(val){
      this.multipleSelection=val



     },
     reset(){
      this.name=""
      this.load()

     },
    
     handleSizeChange(pageSize){
      this.pageSize=pageSize
      this.load()
     },
     handleCurrentChange(pageNum){
      this.pageNum=pageNum
      this.load()
     },
    selectMenu(roleId){
      this.menuDialogVisable=true;
      this.roleId=roleId
       //请求menu数据
       this.request.get("/menu").then(res=>{
          this.menuData=res.data
          //把后台返回的菜单数据处理成 id数组
          this.expands = this.menuData.map(v=>v.id)
      })

      this.request.get("/role/roleMenu/" + roleId).then(res => {
          this.checks = res.data
      })

    }
    }
}

</script>

<style>
.headerBg{
    background: #eee!important;
}
</style>

2、实现菜单管理和角色管理关系

实现：角色管理中，分配菜单后，会出现一个role_id对应一个或者多个menu_id ，两者id之间的关系可以储存到数据库中，然后下次点开该角色的分配菜单时默认回显出来

  1. 建表Role_Menu表
USE `management`;

/*Table structure for table `role_menu` */

DROP TABLE IF EXISTS `role_menu`;

CREATE TABLE `role_menu` (
  `role_id` int(11) NOT NULL COMMENT '角色id',
  `menu_id` int(11) NOT NULL COMMENT '菜单id',
  PRIMARY KEY (`role_id`,`menu_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='角色菜单关系表';
  • 注意，roleId和menuId都应该设置为主键
  1. 实体类RoleMenu.java
@Data
@TableName("role_menu")
public class RoleMenu { 
   
    private Integer roleId;
    private Integer menuId;
}

和之前一样，把RoleMenuMapper和RoleMenuService建好，这里就省略

  1. 实现功能：不需要新建一个controller，因为这也算是role中的功能。

RoleController.java

  //绑定角色和菜单的关系。一个角色id可以对应多个菜单id（一个角色可以有权限管理多个菜单）
    //参数： roleId ，menuIds
    @PostMapping("/roleMenu/{roleId}")
    public Result roleMenu(@PathVariable Integer roleId, @RequestBody List<Integer> menuIds){ 
   
        //复杂的sql操作，需要去service层写业务
        roleService.setRoleMenu(roleId,menuIds);
        return Result.success();
    }

//从数据库中根据roleId查询出与这个角色关联的menuId 

    @GetMapping("/roleMenu/{roleId}")
    public Result getRoleMenu(@PathVariable Integer roleId){ 
   
        return Result.success(roleService.getRoleMenu(roleId));
    }
  1. 在service层中实现业务

RoleService.java

@Service
public class RoleService extends ServiceImpl<RoleMapper, Role> { 
   
    @Autowired
    private RoleMenuService roleMenuService;
    @Autowired
    private RoleMenuMapper roleMenuMapper;


    //加上事务注解，两个操作同时成功才行
    @Transactional
    public void setRoleMenu(Integer roleId, List<Integer> menuIds) { 
   
        QueryWrapper<RoleMenu> queryWrapper = new QueryWrapper<>();
        //先删除当前角色id所有的绑定关系
        queryWrapper.eq("role_id",roleId);
        roleMenuService.remove(queryWrapper);

        //再把前端传过来的菜单id数组绑定到当前这个角色id上去
        for (Integer menuId:menuIds){ 
   
            RoleMenu roleMenu = new RoleMenu();
            roleMenu.setRoleId(roleId);
            roleMenu.setMenuId(menuId);
            roleMenuService.save(roleMenu);
        }
    }
//查询
    public List<Integer> getRoleMenu(Integer roleId) { 
   
        return roleMenuMapper.selectByRoleId(roleId);
    }
}
  1. RoleMenuMapper.java
@Repository
public interface RoleMenuMapper extends BaseMapper<RoleMenu> { 
   


    @Select("select menu_id from role_menu where role_id = #{roleId}")
    List<Integer> selectByRoleId(@Param("roleId") Integer roleId);
}
  1. 在前端中实现
  • 将前端勾选后的数据传给后端存入数据库
 saveRoleMenu(){
       this.request.post("/role/roleMenu/" + this.roleId,this.$refs.tree.getCheckedKeys()).then(res => {
          if(res.code === '200') {
            this.$message.success("绑定成功")
            this.menuDialogVisable = false
          }else{
            this.$message.error(res.msg) 
          }
       })

     },
  • 请求后端查询出存储的关系然后回显到前端（就是在再一次打开该角色的分配菜单时，要默认显示出之前已经勾选的）
   this.request.get("/role/roleMenu/" + roleId).then(res => {
          this.checks = res.data
      })

[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-YXBNwzKL-1673355144547)(D:\桌面\Java学习\项目\管理系统–前后端分离\项目截图\48.jpg)]

这次改动的前端代码就是Role.vue和Menu.vue两个页面，完整代码在前面已经给出了！

通过实现，完成这两个功能，就成功了！

今天的文章18—实现权限菜单管理（三）分享到此就结束了，感谢您的阅读。

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