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;}

Menu 

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 {@Resourceprivate 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 {@Resourceprivate 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-popconfirmclass="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-popconfirmclass="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datathis.tableData = res.data.recordsthis.total = res.data.total})},save() {this.request.post("/role/saveRole", this.form).then(res => {if (res.code === '200') {this.$message.success("保存成功")this.dialogFormVisible = falsethis.load()} else {this.$message.error("保存失败")}})},handleAdd() {this.dialogFormVisible = truethis.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 = pageSizethis.load()},handleCurrentChange(pageNum) {console.log(pageNum)this.pageNum = pageNumthis.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datathis.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-popconfirmclass="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-popconfirmclass="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datathis.tableData = res.data})},save() {this.request.post("/menu/saveMenu", this.form).then(res => {if (res.code === '200') {this.$message.success("保存成功")this.dialogFormVisible = falsethis.load()} else {this.$message.error("保存失败")}})},handleAdd(pid) {this.dialogFormVisible = truethis.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 = pageSizethis.load()},handleCurrentChange(pageNum) {console.log(pageNum)this.pageNum = pageNumthis.load()}}
}
</script><style>
.headerBg {background: #eee !important;
}
</style>