SpringBoot2+Vue2实战(十)权限管理之动态菜单、动态路由生成

【代码】SpringBoot2+Vue2实战(十)权限管理。

m0_64393446

4433人浏览 · 2023-07-04 15:40:32

m0_64393446 · 2023-07-04 15:40:32 发布

一、父子菜单实现

新建数据库表

sys_menu

sys_role

实体类

Role

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;

import java.io.Serializable;

import lombok.Getter;
import lombok.Setter;

/**
 * <p>
 *
 * </p>
 *
 */
@Getter
@Setter
@TableName("sys_role")
public class Role implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * id
     */
    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;

    /**
     * 名称
     */
    private String name;

    /**
     * 描述
     */
    private String description;


}


import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;

import java.io.Serializable;
import java.util.List;

import lombok.Getter;
import lombok.Setter;

/**
 * <p>
 *
 * </p>
 *
 * 
 */
@Getter
@Setter
@TableName("sys_menu")
public class Menu implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * id
     */
    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;

    /**
     * 名称
     */
    private String name;

    /**
     * 路径
     */
    private String path;

    /**
     * 图片
     */
    private String icon;

    /**
     * 描述
     */
    private String description;


    @TableField(exist = false)
    private List<Menu> children;


    private Integer pid;


}

RoleController

package com.example.springboot.controller;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.example.springboot.common.Result;
import com.example.springboot.entity.Role;
import com.example.springboot.service.RoleService;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.util.List;

@RestController
@RequestMapping("/role")
public class RoleController {

    @Resource
    private RoleService roleService;


    //修改或增加
    @PostMapping("/saveRole")
    public Result saveRole(@RequestBody Role role) {
        //新增或修改
        return Result.success(roleService.saveOrUpdate(role));
    }

    @GetMapping("/findAll")
    public Result findAll() {
        return Result.success(roleService.list());
    }

    @DeleteMapping("/{id}")
    public Result delete(@PathVariable("id") Integer id) {
        return Result.success(roleService.removeById(id));
    }

    //批量删除
    @PostMapping("/del/batch")
    public Result deleteBatch(@RequestBody List<Integer> ids) {
        return Result.success(roleService.removeBatchByIds(ids));
    }

    //分页查询 mybatis-plus方式
    @GetMapping("/selectPage")
    public Result selectPage(@RequestParam(defaultValue = "") String name,
                             @RequestParam Integer pageSize,
                             @RequestParam Integer pageNum) {

        IPage<Role> page = new Page<>(pageNum, pageSize);
        QueryWrapper<Role> queryWrapper = new QueryWrapper<>();
        queryWrapper.orderByDesc("id");
        if (!"".equals(name)) {
            queryWrapper.like("name", name);
        }
        return Result.success(roleService.page(page, queryWrapper));
    }

}

MneuController


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.example.springboot.common.Result;
import com.example.springboot.entity.Menu;
import com.example.springboot.service.MenuService;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.util.List;
import java.util.stream.Collectors;

/**
 * <p>
 * 前端控制器
 * </p>
 *
 */
@RestController
@RequestMapping("/menu")
public class MenuController {

    @Resource
    private MenuService menuService;


    //修改或增加
    @PostMapping("/saveMenu")
    public Result saveRole(@RequestBody Menu menu) {
        //新增或修改
        return Result.success(menuService.saveOrUpdate(menu));
    }

    @GetMapping("/findAll")
    public Result findAll(@RequestParam(defaultValue = "") String name) {
        QueryWrapper<Menu> queryWrapper = new QueryWrapper<>();
        queryWrapper.orderByDesc("id");
        if (!"".equals(name)) {
            queryWrapper.like("name", name);
        }
        //查询所有数据
        List<Menu> list = menuService.list(queryWrapper);
        List<Menu> parentNode = list.stream().filter(menu -> menu.getPid() == null).collect(Collectors.toList());
        //找出一级菜单的子菜单
        for (Menu menu:parentNode){
            //筛选所有数据中pid等于父级id的数据就是二级菜单
            menu.setChildren(list.stream().filter(m -> menu.getId().equals(m.getPid())).collect(Collectors.toList()));
        }
        return Result.success(parentNode);
    }

    @DeleteMapping("/{id}")
    public Result delete(@PathVariable("id") Integer id) {
        return Result.success(menuService.removeById(id));
    }

    //批量删除
    @PostMapping("/del/batch")
    public Result deleteBatch(@RequestBody List<Integer> ids) {
        return Result.success(menuService.removeBatchByIds(ids));
    }

    //分页查询 mybatis-plus方式
    @GetMapping("/selectPage")
    public Result selectPage(@RequestParam(defaultValue = "") String name,
                             @RequestParam Integer pageSize,
                             @RequestParam Integer pageNum) {

        IPage<Menu> page = new Page<>(pageNum, pageSize);
        QueryWrapper<Menu> queryWrapper = new QueryWrapper<>();
        queryWrapper.orderByDesc("id");
        if (!"".equals(name)) {
            queryWrapper.like("name", name);
        }
        return Result.success(menuService.page(page, queryWrapper));
    }
}

router/index.js

{
        path: '/',
        component: () => import('../views/Manage.vue'),
        redirect: "/home",
        children: [
            {path: 'user', name: '用户管理', component: () => import('../views/User.vue'),},
            {path: 'home', name: '首页', component: () => import('../views/Home.vue'),},
            {path: 'role', name: '角色管理', component: () => import('../views/Role.vue'),},
            {path: 'menu', name: '菜单管理', component: () => import('../views/Menu.vue'),},
            {path: 'person', name: '个人信息', component: () => import('../views/Person.vue'),},
            {path: 'file', name: '文件管理', component: () => import('../views/Files.vue'),}
        ]
    },

Role.vue

<template>
  <div>
    <div style="margin: 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="您确定批量删除这些数据吗？"
          @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-class-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="handleEdit(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="您确定删除吗？"
              @confirm="del(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, 5, 10, 20]"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </div>

    <el-dialog title="菜单信息" :visible.sync="dialogFormVisible" width="30%">
      <el-form label-width="80px" size="small">
        <el-form-item label="用户名">
          <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="菜单分配" :visible.sync="menuDialogVis" width="30%" style="padding: 0 50px">
      <el-tree
          //使用props进行数据绑定
          :props="props"
          :data="menuData"
          :default-expanded-keys="[1]"
          :default-checked-keys="[4]"
          node-key="id"
          show-checkbox
          @check-change="handleCheckChange">
      </el-tree>
      <div slot="footer" class="dialog-footer">
        <el-button @click="menuDialogVis = false">取 消</el-button>
        <el-button type="primary" @click="save">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Role",
  data() {
    return {
      tableData: [],
      total: 0,
      pageNum: 1,
      pageSize: 2,
      name: "",
      form: {},
      dialogFormVisible: false,
      menuDialogVis: false,
      multipleSelection: [],
      menuData: [],
      props:{
        label:'name'
      }
    }
  },
  created() {
    this.load()
  },
  methods: {
    load() {
      this.request.get("/role/selectPage", {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          name: this.name,
        }
      }).then(res => {
        //注意data
        this.tableData = res.data.records
        this.total = res.data.total
      })

    },


    save() {
      this.request.post("/role/saveRole", this.form).then(res => {
        if (res.code === '200') {
          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 = {}
    },
    handleEdit(row) {
      this.form = JSON.parse(JSON.stringify(row))
      this.dialogFormVisible = true
    },
    del(id) {
      this.request.delete("/role/" + id).then(res => {
        if (res.code === '200') {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },
    handleSelectionChange(val) {
      console.log(val)
      this.multipleSelection = val
    },
    delBatch() {
      let ids = this.multipleSelection.map(v => v.id)  // [{}, {}, {}] => [1,2,3]
      this.request.post("/role/del/batch", ids).then(res => {
        if (res.code === '200') {
          this.$message.success("批量删除成功")
          this.load()
        } else {
          this.$message.error("批量删除失败")
        }
      })
    },
    reset() {
      this.name = ""
      this.load()
    },
    handleSizeChange(pageSize) {
      console.log(pageSize)
      this.pageSize = pageSize
      this.load()
    },
    handleCurrentChange(pageNum) {
      console.log(pageNum)
      this.pageNum = pageNum
      this.load()
    },
    //分配菜单
    selectMenu(roleId) {
      this.menuDialogVis = true

      //请求菜单数据
      this.request.get("/menu/findAll").then(res => {
        //注意data
        this.menuData = res.data
      })

    },
    handleCheckChange(data, checked, indeterminate) {
      console.log(data, checked, indeterminate);
    },
  },

}
</script>


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

Mneu.vue

<template>
  <div>
    <div style="margin: 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="您确定批量删除这些数据吗？"
          @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" row-key="id" default-expand-all border stripe :header-cell-class-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="path" label="路径"></el-table-column>
      <el-table-column prop="icon" label="图片"></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="primary" @click="handleAdd(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="handleEdit(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="您确定删除吗？"
              @confirm="del(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="角色信息" :visible.sync="dialogFormVisible" width="30%">
      <el-form label-width="80px" size="small">
        <el-form-item label="菜单名">
          <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="图片">
          <el-input v-model="form.icon" 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>
  </div>
</template>

<script>
export default {
  name: "Menu",
  data() {
    return {
      tableData: [],
      total: 0,
      pageNum: 1,
      pageSize: 2,
      name: "",
      form: {},
      dialogFormVisible: false,
      multipleSelection: []
    }
  },
  created() {
    this.load()
  },
  methods: {
    load() {
      this.request.get("/menu/findAll", {
        params: {
          name: this.name,
        }
      }).then(res => {
        //注意data
        this.tableData = res.data
      })
    },


    save() {
      this.request.post("/menu/saveMenu", this.form).then(res => {
        if (res.code === '200') {
          this.$message.success("保存成功")
          this.dialogFormVisible = false
          this.load()
        } else {
          this.$message.error("保存失败")
        }
      })
    },
    handleAdd(pid) {
      this.dialogFormVisible = true
      this.form = {}
      if (pid) {
        this.form.pid = pid
      }
    },
    handleEdit(row) {
      this.form = JSON.parse(JSON.stringify(row))
      this.dialogFormVisible = true
    },
    del(id) {
      this.request.delete("/menu/" + id).then(res => {
        if (res.code === '200') {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },
    handleSelectionChange(val) {
      console.log(val)
      this.multipleSelection = val
    },
    delBatch() {
      let ids = this.multipleSelection.map(v => v.id)  // [{}, {}, {}] => [1,2,3]
      this.request.post("/menu/del/batch", ids).then(res => {
        if (res.code === '200') {
          this.$message.success("批量删除成功")
          this.load()
        } else {
          this.$message.error("批量删除失败")
        }
      })
    },
    reset() {
      this.name = ""
      this.load()
    },
    handleSizeChange(pageSize) {
      console.log(pageSize)
      this.pageSize = pageSize
      this.load()
    },
    handleCurrentChange(pageNum) {
      console.log(pageNum)
      this.pageNum = pageNum
      this.load()
    }
  }
}
</script>


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

二、图标功能

新建数sys_dict

Dict


import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;

import java.io.Serializable;

/**
 * <p>
 *
 * </p>
 *
 * @author 
 * @since 2023-07-05
 */
@Data
@TableName("sys_dict")
public class Dict implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * 名称
     */
    private String name;

    /**
     * 内容
     */
    private String value;

    /**
     * 类型
     */
    private String type;


}

MenuController

@Resource
    private DictMapper dictMapper;




 @GetMapping("/icons")
    public Result getIcons(){
        QueryWrapper<Dict> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("type", Constants.DICT_TYPE_ICON);
        return Result.success(dictMapper.selectList(queryWrapper));
    }

Menu.vue


//修改表格图标显示
<el-table-column label="图标" class-name="fontSize18" align="center" label-class-name="fontSize12">
        <template slot-scope="scope">
          <i :class="scope.row.icon"></i>
        </template>
      </el-table-column>


//修改弹窗图标选择显示
<el-form-item label="图标">
          <template slot-scope="scope">
            <el-select clearable v-model="form.icon" placeholder="请选择" style="width: 80%">
              <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>
          </template>
        </el-form-item>

//data中添加参数

options: []


//修改方法

handleEdit(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
      })

    },

查询菜单时展开功能实现

Role

<el-tree
          :props="props"
          :data="menuData"
          :default-expanded-keys="expends"
          :default-checked-keys="checks"
          node-key="id"
          show-checkbox
          @check-change="handleCheckChange">
         <span class="custom-tree-node" slot-scope="{ node, data }">
           <span><i :class="data.icon"></i>{{ data.name }}</span>
         </span>
      </el-tree>

//data添加变量
 expends: [],
      checks: [],



//分配菜单
    selectMenu(roleId) {
      this.menuDialogVis = true

      //请求菜单数据
      this.request.get("/menu/findAll").then(res => {
        //注意data
        this.menuData = res.data

        //把后台返回的菜单数据处理成id数组
        this.expends = this.menuData.map(v => v.id);
      })

    },

三、菜单分配功能实现

1.添加功能

新建数据库表

sys_role_menu

RoleMenu

import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;

@Data
@TableName("sys_role_menu")
public class RoleMenu {

    private Integer roleId;

    private Integer menuId;
}

RoleController

@PostMapping("/setRoleMenu/{roleId}")
    public Result setRoleMenu(@PathVariable Integer roleId, @RequestBody List<Integer> menuIds) {
        roleService.setRoleMenu(roleId, menuIds);
        return Result.success();
    }

RoleService

void setRoleMenu(Integer roleId, List<Integer> menuIds);

RoleServiceImpl

@Resource
    private RoleMenuMapper roleMenuMapper;

    @Override
    @Transactional
    public void setRoleMenu(Integer roleId, List<Integer> menuIds) {
        /**
         * 第一种方法
         * */
        /*QueryWrapper<RoleMenu> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("role_id",roleId);
        roleMenuMapper.delete(queryWrapper);*/

        /**
         * 第二种方法
         * */
        //先删除当前角色id所有的绑定关系
        roleMenuMapper.deleteMenuByRoleId(roleId);

        //再把前端传过来的菜单id数组绑定到当前这个角色id上
        for (Integer menuId: menuIds){
            RoleMenu roleMenu = new RoleMenu();
            roleMenu.setRoleId(roleId);
            roleMenu.setMenuId(menuId);
            roleMenuMapper.insert(roleMenu);
        }
    }

RoleMenuMapper

 @Delete("delete from sys_role_menu where role_id = #{roleId}")
    Integer deleteMenuByRoleId(@Param("roleId") Integer roleId);

Role.vue

<el-button type="info" @click="selectMenu(scope.row.id)">分配菜单<i class="el-icon-menu"></i></el-button>


<el-dialog title="菜单分配" :visible.sync="menuDialogVis" width="30%" style="padding: 0 50px">
      <el-tree
          :props="props"
          :data="menuData"
          :default-expanded-keys="expends"
          :default-checked-keys="checks"
          node-key="id"
          show-checkbox
          ref="tree"
      >
         <span class="custom-tree-node" slot-scope="{ node, data }">
           <span><i :class="data.icon"></i>{{ data.name }}</span>
         </span>
      </el-tree>
      <div slot="footer" class="dialog-footer">
        <el-button @click="menuDialogVis = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleMenu">确 定</el-button>
      </div>
    </el-dialog>






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

2.点击菜单分配时的查询已有权限菜单功能

RoleController

@GetMapping("/getRoleMenu/{roleId}")
    public Result getRoleMenu(@PathVariable Integer roleId) {
        return Result.success(roleService.getRoleMenu(roleId));
    }

RoleService

List<Integer> getRoleMenu(Integer roleId);

RoleServiceImpl

@Override
    public List<Integer> getRoleMenu(Integer roleId) {
        return roleMenuMapper.selectByRoleId(roleId);
    }

RoleMenuMapper

 @Select("select menu_id from sys_role_menu where role_id = #{roleId}")
    List<Integer> selectByRoleId(@Param("roleId") Integer roleId);

Role.vue

roleId: 0





//分配菜单
    selectMenu(roleId) {
      this.menuDialogVis = true
      this.roleId = roleId
      //请求菜单数据
      this.request.get("/menu/findAll").then(res => {
        //注意data
        this.menuData = res.data

        //把后台返回的菜单数据处理成id数组
        this.expends = this.menuData.map(v => v.id);
      })

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

    },

四、动态菜单生成

修改数据库表

sys_role

RoleEnum

public enum RoleEnum {
    ROLE_ADMIN,ROLE_USER;
}

Role

@Getter
@Setter
@TableName("sys_role")
public class Role implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * id
     */
    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;

    /**
     * 名称
     */
    private String name;

    /**
     * 描述
     */
    private String description;

    //唯一标识
    private String flag;

}

MenuController

@GetMapping("/findAll")
    public Result findAll(@RequestParam(defaultValue = "") String name) {
        return Result.success(menuService.findMenus(name));
    }

MenuService

 List<Menu> findMenus(String name);

MenuServiceImpl

@Override
    public List<Menu> findMenus(String name) {
        QueryWrapper<Menu> queryWrapper = new QueryWrapper<>();
        queryWrapper.orderByDesc("id");
        if (!"".equals(name)) {
            queryWrapper.like("name", name);
        }
        //查询所有数据
        List<Menu> list = list(queryWrapper);
        List<Menu> parentNode = list.stream().filter(menu -> menu.getPid() == null).collect(Collectors.toList());
        //找出一级菜单的子菜单
        for (Menu menu:parentNode){
            //筛选所有数据中pid等于父级id的数据就是二级菜单
            menu.setChildren(list.stream().filter(m -> menu.getId().equals(m.getPid())).collect(Collectors.toList()));
        }
        return parentNode;
    }

UserServiceImpl

@Override
    public UserDto login(UserDto userDto) {
        User one = getUserInfo(userDto);
        if (one != null) {
            BeanUtil.copyProperties(one, userDto, true);
            //设置token
            String token = TokenUtils.getToken(one.getId().toString(), one.getPassword());
            userDto.setToken(token);
            //ROLE_ADMIN
            String role = one.getRole();
            //设置用户的菜单列表
            List<Menu> roleMenus = getRoleMenu(role);
            userDto.setMenus(roleMenus);
            return userDto;
        } else {
            throw new ServiceException(Constants.CODE_600, "用户名或密码错误");
        }
    }





private List<Menu> getRoleMenu(String roleFlag) {

        Integer roleId = roleMapper.selectByFlag(roleFlag);
        //当前角色的所有菜单的id集合
        List<Integer> menuIds = roleMenuMapper.selectByRoleId(roleId);

        //查出所有的菜单
        List<Menu> menus = menuService.findMenus("");
        //new 一个最后筛选完成之后的list
        List<Menu> roleMenus = new ArrayList<>();
        //筛选当前用户角色
        for (Menu menu : menus) {
            if (menuIds.contains(menu.getId())) {
                roleMenus.add(menu);
            }
            List<Menu> children = menu.getChildren();
            //removeIf 移除children不在menuIds集合中的元素
            children.removeIf(child -> !menuIds.contains(child.getId()));
        }
        return roleMenus;
    }

login() {
      this.$refs['userForm'].validate((valid) => {
        if (valid) {  // 表单校验合法
          this.request.post("/user/login", this.user).then(res => {
            if (res.code === '200'){
              //存储用户信息到浏览器
              localStorage.setItem("user",JSON.stringify(res.data))
                //获取菜单信息
              localStorage.setItem("menus",JSON.stringify(res.data.menus))
              this.$router.push("/")
              this.$message.success("登录成功")
            }else {
              this.$message.error(res.msg)
            }
          })
        }
      });
    }

Aside.vue

<div v-for="item in menus" :key="item.id">
      <div v-if="item.path">
        <el-menu-item :index="item.path">
          <i :class="item.icon"></i>
          <span slot="title">{{ item.name }}</span>
        </el-menu-item>
      </div>
      <div v-else>
        <el-submenu :index="item.id +''">
          <template slot="title">
            <i :class="item.icon"></i>
            <span slot="title">{{ item.name }}</span>
          </template>
          <div v-for="subItem in item.children" :key="subItem.id">
            <el-menu-item :index="subItem.path">
              <i :class="subItem.icon"></i>
              <span slot="title">{{ subItem.name }}</span>
            </el-menu-item>
          </div>
        </el-submenu>
      </div>
    </div>

菜单默认展开效果

Aside.vue

<el-menu :default-openeds="opens" style="min-height: 100%; overflow-x: hidden"
           background-color="rgb(48, 65, 86)"
           text-color="#fff"
           active-text-color="#ffd04b"
           :collapse-transition="false"
           :collapse="isCollapse"
           router
  >



//data中添加

opens: localStorage.getItem("menus") ? JSON.parse(localStorage.getItem("menus")).map(v => v.id + '') : []

五、动态路由生成

router/index.js

import Vue from "vue"
import VueRouter from "vue-router"
import store from "@/store";
import Manage from "@/views/Manage.vue";

Vue.use(VueRouter)

const routes = [

    {
        path: '/login',
        name: 'Login',
        component: () => import('../views/Login.vue')
    },
    {
        path: '/register',
        name: 'Register',
        component: () => import('../views/Register.vue')
    },
]

const router = new VueRouter({
    mode: 'history',
    base: process.env.BASE_URL,
    routes
})

//注意刷新页面会导致重置路由
export const setRoutes = () => {
    const storeMenus = localStorage.getItem("menus");
    if (storeMenus) {
        //拼装动态路由
        const manageRoute = {
            path: '/',
            name: 'Manage',
            component: () => import('../views/Manage.vue'),
            redirect: "/home",
            children: []
        }

        const menus = JSON.parse(storeMenus)
        menus.forEach(item => {
            //当且仅当path不为空的时候才去设置路由
            if (item.path) {
                let itemMenu = {
                    path: item.path.replace("/", ""),
                    name: item.name,
                    component: () => import('../views/' + item.pagePath + '.vue')
                }
                manageRoute.children.push(itemMenu)
            } else if (item.children.length) {
                item.children.forEach(item => {
                    if (item.path) {
                        let itemMenu = {
                            path: item.path.replace("/", ""),
                            name: item.name,
                            component: () => import('../views/' + item.pagePath + '.vue')
                        }
                        manageRoute.children.push(itemMenu)
                    }
                })
            }
        })
        //获取当前的路由对象名称数组
        const currentRouteNames = router.getRoutes().map(v => v.name)
        if (!currentRouteNames.includes('Manage')) {
            //动态添加到现在的路由对象中去
            router.addRoute(manageRoute)
        }
    }
}

//重置我就再刷新一次路由
setRoutes()

// 路由守卫
router.beforeEach((to, from, next) => {
    localStorage.setItem("currentPathName", to.name)  // 设置当前的路由名称，为了在Header组件中去使用
    store.commit("setPath")  // 触发store的数据更新
    next()
})

export default router

login() {
      this.$refs['userForm'].validate((valid) => {
        if (valid) {  // 表单校验合法
          this.request.post("/user/login", this.user).then(res => {
            if (res.code === '200'){
              //存储用户信息到浏览器
              localStorage.setItem("user",JSON.stringify(res.data))
              localStorage.setItem("menus",JSON.stringify(res.data.menus))

              //动态设置当前用户的路由
              setRoutes()



              this.$router.push("/")
              this.$message.success("登录成功")
            }else {
              this.$message.error(res.msg)
            }
          })
        }
      });
    }

404页面编写

404.vue

<template>
<div style="overflow: hidden;height: 100%">
  <img src="../assets/404.png" alt="" style="width: 100%;height: 100%">
</div>
</template>

<script>
export default {
  name: "NotFound"
}
</script>

<style>


</style>

router/index.js

{
        path: '*',
        name: '404',
        component: () => import('../views/404.vue')
    },

六、权限菜单实现

RoleServiceImpl

@Override
    @Transactional
    public void setRoleMenu(Integer roleId, List<Integer> menuIds) {
        /**
         * 第一种方法
         * */
        /*QueryWrapper<RoleMenu> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("role_id",roleId);
        roleMenuMapper.delete(queryWrapper);*/

        /**
         * 第二种方法
         * */
        //先删除当前角色id所有的绑定关系
        roleMenuMapper.deleteMenuByRoleId(roleId);

        //再把前端传过来的菜单id数组绑定到当前这个角色id上
        List<Integer> menuIdsCopy = CollUtil.newArrayList(menuIds);
        for (Integer menuId : menuIds) {
            Menu menu = menuService.getById(menuId);
            //表示二级菜单 并且传过来的menuId数组里面没有它的父级id
            if (menu.getPid() != null && !menuIds.contains(menu.getPid())) {
                //那么我们就得补上这个父级id
                RoleMenu roleMenu = new RoleMenu();
                roleMenu.setRoleId(roleId);
                roleMenu.setMenuId(menuId);
                roleMenuMapper.insert(roleMenu);
                menuIdsCopy.add(menu.getPid());
            }
            RoleMenu roleMenu = new RoleMenu();
            roleMenu.setRoleId(roleId);
            roleMenu.setMenuId(menuId);
            roleMenuMapper.insert(roleMenu);
        }
    }

store/index.js

import Vue from 'vue'
import Vuex from 'vuex'
import router from "@/router";

Vue.use(Vuex)

const store = new Vuex.Store({
    state: {
        currentPathName: ''
    },
    mutations: {
        setPath (state) {
            state.currentPathName = localStorage.getItem("currentPathName")
        },
        logout(){
            localStorage.removeItem("user")
            localStorage.removeItem("menus")
            router.push("/login")
        }
    }
})

export default store

main.js

import Vue from 'vue'
import App from './App.vue'
import router from './router'
import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
import './assets/gloable.css'
import request from "@/utils/request";
import store from './store'

Vue.config.productionTip = false

Vue.use(ElementUI, {size: "mini"});

Vue.prototype.request = request
Vue.prototype.$store = store

new Vue({
    router,
    store,
    render: h => h(App)
}).$mount('#app')

Header.vue

logout() {
      this.$store.commit("logout")
      this.$message.success("退出成功")
    }

Role.vue

           <el-button type="info" @click="selectMenu(scope.row)">分配菜单<i class="el-icon-menu"></i></el-button>




<el-dialog title="菜单分配" :visible.sync="menuDialogVis" width="30%" style="padding: 0 50px">
      <el-tree
          :check-strictly="true"
          :props="props"
          :data="menuData"
          :default-expanded-keys="expends"
          :default-checked-keys="checks"
          node-key="id"
          show-checkbox
          ref="tree"
      >
         <span class="custom-tree-node" slot-scope="{ node, data }">
           <span><i :class="data.icon"></i>{{ data.name }}</span>
         </span>
      </el-tree>
      <div slot="footer" class="dialog-footer">
        <el-button @click="menuDialogVis = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleMenu">确 定</el-button>
      </div>
    </el-dialog>



roleFlag: ''




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


          //操作管理员角色后需要重新登陆
          if (this.roleFlag === 'ROLE_ADMIN') {
            this.$store.commit("logout")
          }

        } else {
          this.$message.error(res.msg)
        }
      })
    },





//分配菜单
    selectMenu(role) {
      this.menuDialogVis = true
      this.roleId = role.id
      this.roleFlag = role.flag
      //请求菜单数据
      this.request.get("/menu/findAll").then(res => {
        //注意data
        this.menuData = res.data

        //把后台返回的菜单数据处理成id数组
        this.expends = this.menuData.map(v => v.id);
      })

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

      })

    },

Vue

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