vue+element-ui构建动态菜单
1.构建菜单数据结构 config.jslet config =[{"createUserId":0,"parentMenuId":0,"icon":"el-icon-message","name":"系统管理","alias":"系统管理","id":1,...
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1.构建菜单数据结构 config.js
let config =[
{
"createUserId":0,
"parentMenuId":0,
"icon":"el-icon-message",
"name":"系统管理",
"alias":"系统管理",
"id":1,
"sort":0,
"state":"ENABLE",
"type":"NONE",
"childs":[
{
"createUserId":0,
"parentMenuId":1,
"icon":"el-icon-message",
"name":"权限管理",
"alias":"权限管理",
"id":3,
"sort":0,
"state":"ENABLE",
"type":"LINK",
"value":"/auth",
"childs":[
{
"createUserId":0,
"parentMenuId":3,
"icon":"el-icon-message",
"name":"权限管理son",
"alias":"权限管理son",
"id":11,
"sort":0,
"state":"ENABLE",
"type":"LINK",
"value":"/auth",
"childs":[
]
}
]
},
{
"createUserId":0,
"parentMenuId":1,
"icon":"el-icon-message",
"name":"角色管理",
"alias":"角色管理",
"id":3,
"sort":1,
"state":"ENABLE",
"type":"LINK",
"value":"/elc",
"childs":[
{
"createUserId":0,
"parentMenuId":3,
"icon":"el-icon-message",
"name":"权限管理son",
"alias":"权限管理son",
"id":11,
"sort":0,
"state":"ENABLE",
"type":"LINK",
"value":"/auth",
"childs":[
]
}
]
}
]
},
{
"createUserId":0,
"parentMenuId":0,
"icon":"el-icon-news",
"name":"用户管理",
"alias":"用户管理",
"id":6,
"sort":1,
"state":"ENABLE",
"type":"NONE",
"childs":[
{
"createUserId":0,
"parentMenuId":6,
"icon":"el-icon-message",
"name":"邮箱管理",
"alias":"邮箱管理",
"id":7,
"sort":0,
"state":"ENABLE",
"type":"LINK",
"value":"/elc",
"childs":[
]
}
]
}
]
export default config
2.菜单组件
<template>
<div class="navMenu">
<label v-for="navMenu in navMenus" :key="navMenu.name">
<el-menu-item v-if="navMenu.childs==null"
:key="navMenu.id" :data="navMenu" :index="navMenu.name"
@click="handleRoute(navMenu.value)" >
<i :class="navMenu.icon"></i>
<span slot="title">{{navMenu.alias}}</span>
</el-menu-item>
<el-submenu v-if="navMenu.childs" @click.native="goto(navMenu.value)"
:key="navMenu.id" :data="navMenu" :index="navMenu.name">
<template slot="title">
<i :class="navMenu.icon"></i>
<span> {{navMenu.alias}}</span>
</template>
<NavMenu :navMenus="navMenu.childs"></NavMenu>
</el-submenu>
</label>
</div>
</template>
<script>
export default {
name: 'NavMenu',
props: ['navMenus'],
data() {
return {}
},
methods: {
goto (menu) {
// 通过菜单URL跳转至指定路由
console.info(menu)
if(menu){
this.$router.push(menu)
}
//
}
}
}
</script>
<style scoped>
</style>
3.main 页面调用
<template lang="html">
<div class="" >
<el-container style="height: 720px; border: 1px solid #eee">
<!--左侧菜单组件-->
<el-aside width="200px" style="background-color:#2a3a4a">
<el-menu
:default-active="isId"
@select="handleSelect"
class="el-menu-vertical-demo"
background-color="#2a3a4a"
text-color="#dddddd"
active-text-color="#aaaaaa">
<NavMenu :navMenus="totalList"></NavMenu>
</el-menu>
</el-aside>
<el-container>
<el-header style="text-align: right; font-size: 12px;" >
<el-menu :default-active="activeIndex2" class="el-menu-demo" mode="horizontal" @select="handleSelect"
background-color="#545c64" text-color="#fff" active-text-color="#ffd04b">
<el-menu-item index="1">处理中心</el-menu-item>
<el-submenu index="2">
<template slot="title">我的工作台</template>
<el-menu-item index="2-1">选项1</el-menu-item>
</el-submenu>
<el-menu-item index="3" disabled>消息中心</el-menu-item>
<el-menu-item index="4"><a href="#" target="_blank">订单管理</a></el-menu-item>
</el-menu>
</el-header>
<!--MAIN-->
<el-main>
<router-view></router-view>
</el-main>
<el-footer>------------------</el-footer>
</el-container>
</el-container>
</div>
</template>
<script>
import config from "./config";
import NavMenu from "./menuTemp";
export default {
data() {
return {
totalList: [],
isId: "权限管理",
activeIndex: '1',
activeIndex2: '1'
};
},
methods: {
handleSelect(key, keyPath) {
console.log(key, keyPath);
}
},
components: {
NavMenu
},
beforeRouteEnter(to, from, next) {
console.log("我从哪里来", to.params.id, from);
var self = this;
next(vm => {
vm.isId = to.params.id;
});
},
watch: {
$route(to, from) {
this.isId = to.params.id;
}
},
created() {
this.totalList = config;
}
};
</script>
<style>
.el-aside {
color: #333;
}
</style>
5.router
import Vue from 'vue'
import Router from 'vue-router'
import Main from '@/ele/Main.vue'
import user from '@/components/system/user.vue'
import auth from '@/components/system/auth.vue'
Vue.use(Router)
export default new Router({
routes: [
{
path: '/',
component: Main,
name: 'Main',
children: [
{
path: 'elc',
component: user,
name: 'user'
},
{
path: 'auth',
component: auth,
name: 'auth'
},
]
}
]
})前端的组件数据就这些了，后端用递归查询返回数据。
1.后端Ztree ，省略get set
public class Ztree {
private int id;
private int parentMenuId;
private String name;
private String icon;
private String alias;
private String state;
private int sort;
private String value;
private String type;
private int createUserId;
}2.模拟构建数据
List<Ztree> ztreeList =new ArrayList<>();
Ztree ztree =new Ztree();
ztree.setId(1);
ztree.setParentMenuId(0);
ztree.setName("系统管理");
ztree.setIcon("el-icon-message");
ztree.setAlias("系统管理");
ztree.setState("ENABLE");
ztree.setSort(0);
ztree.setValue(null);
ztree.setType("NONE");
Ztree ztree1 =new Ztree();
ztree1.setId(3);
ztree1.setParentMenuId(1);
ztree1.setName("权限管理");
ztree1.setIcon("el-icon-message");
ztree1.setAlias("权限管理");
ztree1.setState("ENABLE");
ztree1.setSort(0);
ztree1.setValue("/auth");
ztree1.setType("LINK");
Ztree ztree11 =new Ztree();
ztree11.setId(11);
ztree11.setParentMenuId(3);
ztree11.setName("权限管理son");
ztree11.setIcon("el-icon-message");
ztree11.setAlias("权限管理son");
ztree11.setState("ENABLE");
ztree11.setSort(0);
ztree11.setValue("/auth");
ztree11.setType("LINK");
Ztree ztree2 =new Ztree();
ztree2.setId(3);
ztree2.setParentMenuId(1);
ztree2.setName("角色管理");
ztree2.setIcon("el-icon-message");
ztree2.setAlias("角色管理");
ztree2.setState("ENABLE");
ztree2.setSort(1);
ztree2.setValue("/elc");
ztree2.setType("LINK");
//总的2
Ztree ztree4 =new Ztree();
ztree4.setId(6);
ztree4.setParentMenuId(0);
ztree4.setName("用户管理");
ztree4.setIcon("el-icon-news");
ztree4.setAlias("用户管理");
ztree4.setState("ENABLE");
ztree4.setSort(1);
ztree4.setValue(null);
ztree4.setType("NONE");
Ztree ztree6 =new Ztree();
ztree6.setId(7);
ztree6.setParentMenuId(6);
ztree6.setName("邮箱管理");
ztree6.setIcon("el-icon-message");
ztree6.setAlias("邮箱管理");
ztree6.setState("ENABLE");
ztree6.setSort(0);
ztree6.setValue("/elc");
ztree6.setType("LINK");
ztreeList.add(ztree);
ztreeList.add(ztree1);
ztreeList.add(ztree2);
ztreeList.add(ztree4);
ztreeList.add(ztree6);
ztreeList.add(ztree11);
JSONArray array= JSONArray.parseArray(JSON.toJSONString(ztreeList));3.递归调用
public static JSONArray treeMenuList(JSONArray menuList, int parentId) {
JSONArray childMenu = new JSONArray();
for (Object object : menuList) {
JSONObject jsonMenu = JSONObject.parseObject(JSONObject.toJSONString(object));
int menuId = (int)jsonMenu.get("id");
int pid = (int)jsonMenu.get("parentMenuId");
if (parentId == pid) {
JSONArray c_node = treeMenuList(menuList, menuId);
jsonMenu.put("childs", c_node);
childMenu.add(jsonMenu);
}
}
return childMenu;
}这样，得到的数据就是前端页面需要的数据。数据库建表就是Ztree里的字段。前端页面可以在created生命周期函数中调用后端获取数据，最终效果图
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