SPA项目开发之动态树+数据表格+分页

1. 后台数据
t_vue_user

t_vue_tree_node

t_vue_articles

2. 动态生成NavMenu导航菜单(只支持2级菜单)
2.1 结构
<el-menu key="" index="">
<el-submenu>
<template slot="title">
<i class="el-icon-location"></i>
<span>导航一</span>
</template>
<template slot="title">分组一</template>
<el-menu-item route="">

2.2 vue+element的el-menu组件实现路由跳转及当前项的设置
<el-menu router :default-active="$route.path">
<el-menu-item index="/company/userManager">用户管理</el-menu-item>

注1：要实现路由跳转，先要在el-menu标签上添加router属性，然后只要在每个el-menu-item标签内
的index属性设置一下url即可实现点击el-menu-item实现路由跳转。
注2：导航当前项，在el-menu标签中绑定 :default-active="$route.path",注意是绑定属性，
不要忘了加“:”,当$route.path等于el-menu-item标签中的index属性值时则该item为当前项。

注3：后台t_tree_node表有几个节点的url为空，则会导致几个节点样式会一致

2.3 数据表格
<el-table :data="result" style=" 100%;" :border="true" max-height="550">
<el-table-column prop="id" label="ID" min-width="10" align="center"></el-table-column>
<el-table-column prop="title" label="标题" min-width="20"></el-table-column>
<el-table-column prop="body" label="内容" min-width="70"></el-table-column>
</el-table>

作业1：列表的第一列为序号，为保护数据信息，防止恶意爬虫，不能把后端给的id直接显示，应该显示行号
提示：查el-table文档中关于“自定义索引”相关知识点

附录一：vue中如何修改[数组中][对象的值]
data:{
empList:[{eid:1,ename:'zs'},{eid:2,ename:'ls'}]
}

this.empList[0].ename="zss";//vue 中是无法检测到根据索引值修改的数据变动的

解决方案：通过Vue数组变异方法可以动态控制数据的增减
// 第一个参数是要修改的数据, 第二个值是修改当前数组的哪一个字段,第三个是要修改为什么值
this.$set(this.empList[index], 'ename', 'zss')
或者
Vue.set(this.empList[index], 'ename', 'zss')

<el-pagination style="margin-top: 20px;" @size-change="handleSizeChange" @current-change="handleCurrentChange"
:current-page="formInline.page" :page-sizes="[10, 20, 30, 50]" :page-size="100" layout="total, sizes, prev, pager, next, jumper"
:total="formInline.total">
</el-pagination>

handleSizeChange(rows) {
this.formInline.page = 1;
this.formInline.rows = rows;
this.search();
},
handleCurrentChange(page) {
this.formInline.page = page;
this.search();
}

动态树形菜单

LeftNav.vue

<template>
    <el-menu router :default-active="$route.path" class="el-menu-vertical-demo" background-color="#334157" text-color="#fff"
     active-text-color="#ffd04b" :collapse="collapsed">
        <!-- <el-menu default-active="2" :collapse="collapsed" collapse-transition router :default-active="$route.path" unique-opened class="el-menu-vertical-demo" background-color="#334157" text-color="#fff" active-text-color="#ffd04b"> -->
        <div class="logobox">
            <img class="logoimg" src="../assets/img/logo.png" alt="">
        </div>
        <!-- 注意：index是必填的属性  1、index可以看成ID，也就是说它是唯一的 2、它代表路由的跳转路径 -->
        <el-submenu :index="'id_'+m.treeNodeId" v-for="m in menus">
            <template slot="title">
                <i :class="m.icon"></i>
                <span>{{m.treeNodeName}}</span>
            </template>
            <el-menu-item :key="'id_'+m2.treeNodeId" :index="m2.url" v-for="m2 in m.children">
                <template slot="title">
                    <i :class="m2.icon"></i>
                    <span>{{m2.treeNodeName}}</span>
                </template>
            </el-menu-item>
        </el-submenu>
    </el-menu>
</template>
<script>
    export default {
        data() {
            return {
                collapsed: false,
                menus: []
            }
        },
        created() {
            this.$root.Bus.$on('collapsed-side', (v) => {
                this.collapsed = v;
            });
            let url = this.axios.urls.SYSTEM_MENU_TREE;
            this.axios.post(url, {}).then((response) => {
                console.log(response);
                this.menus = response.data.result;
            }).catch((response) => {
                console.log(response);
            });
        }
    }
</script>
<style>
    .el-menu-vertical-demo:not(.el-menu--collapse) {
         240px;
        min-height: 400px;
    }

    .el-menu-vertical-demo:not(.el-menu--collapse) {
        border: none;
        text-align: left;
    }

    .el-menu-item-group__title {
        padding: 0px;
    }

    .el-menu-bg {
        background-color: #1f2d3d !important;
    }

    .el-menu {
        border: none;
    }

    .logobox {
        height: 40px;
        line-height: 40px;
        color: #9d9d9d;
        font-size: 20px;
        text-align: center;
        padding: 20px 0px;
    }

    .logoimg {
        height: 40px;
    }
</style>

数据表格和分页、查询

Articles.vue

<template>
    <div>
        <!-- 搜索框 -->
        <el-form :inline="true" :model="formInline" class="user-search">
            <el-form-item label="搜索：">
                <el-input size="small" v-model="formInline.title" placeholder="请输入文章标题"></el-input>
            </el-form-item>
            <el-form-item>
                <el-button size="small" type="primary" icon="el-icon-search" @click="search">搜索</el-button>
            </el-form-item>
        </el-form>
        <!--列表-->
        <el-table size="small" :data="listData" border element-loading-text="拼命加载中" style=" 100%;">
            <el-table-column sortable prop="id" label="ID" min-width="300">
            </el-table-column>
            <el-table-column sortable prop="title" label="文章标题" min-width="300">
            </el-table-column>
            <el-table-column sortable prop="body" label="文章内容" min-width="300">
            </el-table-column>
        </el-table>
        <!-- 分页条 -->
        <el-pagination style="margin-top: 20px;" @size-change="handleSizeChange" @current-change="handleCurrentChange"
         :current-page="formInline.page" :page-sizes="[10, 20, 30, 50]" :page-size="formInline.rows" layout="total, sizes, prev, pager, next, jumper"
         :total="total">
        </el-pagination>

    </div>
</template>

<script>
    export default {
        data() {
            return {
                listData: [],
                total:0,
                formInline: {
                    title: '',
                    page:1,
                    rows:10,
                    total:0
                }
            };
        },
        methods: {
            search() {
                this.doSearch(this.formInline);
            },
            doSearch(params) {
                let url = this.axios.urls.SYSTEM_ARTICLE_LIST;
                this.axios.post(url, params).then((response) => {
                    console.log(response);
                    this.listData = response.data.result;
                    this.total = response.data.pageBean.total;
                }).catch((response) => {
                    console.log(response);
                });
            },
            handleSizeChange(rows) {
                console.log('页码大小发生改变的时候触发！！！');
                this.formInline.page = 1;
                this.formInline.rows = rows;
                this.search();
            },
            handleCurrentChange(page) {
                console.log('当前页码发生改变的时候触发！！！');
                this.formInline.page = page;
                this.search();
            }
        },
        created() {
            this.doSearch({});
        }
    }
</script>

<style>

</style>

index.js

import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'
import Login from '@/views/Login'
import Reg from '@/views/Reg'
import AppMain from '@/components/AppMain'
import LeftNav from '@/components/LeftNav'
import TopNav from '@/components/TopNav'
import Articles from '@/views/sys/Articles'



Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/',
      name: 'Login',
      component: Login
    },
        {
            path: '/Login',
            name: 'Login',
            component: Login
        },
        {
            path: '/Reg',
            name: 'Reg',
            component: Reg
        },
        {
            path: '/AppMain',
            name: 'AppMain',
            component: AppMain,
            children:[
                {
                path: '/LeftNav',
                name: 'LeftNav',
                component: LeftNav
            },
            {
                path: '/TopNav',
                name: 'TopNav',
                component: TopNav
            },
            {
                path: '/sys/Articles',
                name: 'Articles',
                component: Articles
                }
            ]
        }
        
  ]
})