一：在component文件夹下新建如下treeTable文件夹，里面有2个文件：

eval.js:将数据转换成树形数据

/**
 * @Author: jianglei
 * @Date: 2017-10-12 12:06:49
 */
"use strict";
import Vue from "vue";
export default function treeToArray(
 data,
 expandAll,
 parent = null,
 level = null
) {
 let tmp = [];
 Array.from(data).forEach(function(record) {
 if (record._expanded === undefined) {
 Vue.set(record, "_expanded", expandAll);
 }
 let _level = 1;
 if (level !== undefined && level !== null) {
 _level = level + 1;
 }
 Vue.set(record, "_level", _level);
 // 如果有父元素
 if (parent) {
 Vue.set(record, "parent", parent);
 }
 tmp.push(record);
 if (record.child && record.child.length > 0) {
 const child = treeToArray(record.child, expandAll, record, _level);
 tmp = tmp.concat(child);
 }
 });
 return tmp;
}

index.vue:树形表格组件

<template>
 <el-table ref="multipleTable" :data="formatData" :row-style="showRow" v-bind="$attrs"> <!-- @header-click="chooseall" -->
 <el-table-column :render-header="renderHeader" width="50" align="center">
 <template slot-scope="scope">
 <el-checkbox v-model="scope.row.checks" @change="toselect(scope.row)"></el-checkbox>
 </template>
 </el-table-column>
 <el-table-column v-if="columns.length===0" width="150">
 <template slot-scope="scope">
 <span v-for="space in scope.row._level" :key="space" class="ms-tree-space"/>
 <span v-if="iconShow(0,scope.row)" class="tree-ctrl" @click="toggleExpanded(scope.$index)">
 <i v-if="!scope.row._expanded" class="el-icon-plus"/>
 <i v-else class="el-icon-minus"/>
 </span>
 {{ scope.$index }}
 </template>
 </el-table-column>
 <el-table-column v-for="(column, index) in columns" v-else :key="column.value" :label="column.text" :width="column.width">
 <template slot-scope="scope">
 <!-- Todo -->
 <!-- eslint-disable-next-line vue/no-confusing-v-for-v-if -->
 <span v-for="space in scope.row._level" v-if="index === 0" :key="space" class="ms-tree-space"/>
 <span v-if="iconShow(index,scope.row)" class="tree-ctrl" @click="toggleExpanded(scope.$index)">
 <i v-if="!scope.row._expanded" class="el-icon-plus"/>
 <i v-else class="el-icon-minus"/>
 </span>
 {{ scope.row[column.value] }}
 </template>
 </el-table-column>
 <slot/>
 </el-table>
</template>
 
<script>
/**
 Auth: Lei.j1ang
 Created: 2018/1/19-13:59
*/
import treeToArray from "./eval";
export default {
 name: "TreeTable",
 data() {
 return {
 chooseson: true, //全选
 key: true //单个点击直到全部选中
 };
 },
 props: {
 /* eslint-disable */
 data: {
 type: [Array, Object],
 required: true
 },
 columns: {
 type: Array,
 default: () => []
 },
 evalFunc: Function,
 evalArgs: Array,
 expandAll: {
 type: Boolean,
 default: false
 }
 },
 computed: {
 // 格式化数据源
 formatData: function() {
 let tmp;
 if (!Array.isArray(this.data)) {
 tmp = [this.data];
 } else {
 tmp = this.data;
 }
 const func = this.evalFunc || treeToArray;
 const args = this.evalArgs
 ? [tmp, this.expandAll].concat(this.evalArgs)
 : [tmp, this.expandAll];
 return func.apply(null, args);
 }
 },
 methods: {
 showRow: function(row) {
 const show = row.row.parent
 ? row.row.parent._expanded && row.row.parent._show
 : true;
 row.row._show = show;
 return show
 ? "animation:treeTableShow 1s;-webkit-animation:treeTableShow 1s;"
 : "display:none;";
 },
 // 切换下级是否展开
 toggleExpanded: function(trIndex) {
 const record = this.formatData[trIndex];
 record._expanded = !record._expanded;
 },
 // 图标显示
 iconShow(index, record) {
 return index === 0 && record.child && record.child.length > 0;
 },
 
 //设置表头全选
 renderHeader(h, data) {
 return h("span", [
 h("input", {
 attrs: {
 id: "chooseall",
 type: "checkbox",
 style:
 "border: 1px solid #dcdfe6;border-radius: 2px;box-sizing: border-box;width: 14px;height: 14px;background-color: #fff;"
 }
 })
 ]);
 },
 //功能函数:选中部分子集
 setchildtobeselect(arr, key) {
 arr.forEach((v, i) => {
 v.checks = key;
 // v._expanded = key;//选中后展开子项
 if (v.child) {
 this.setchildtobeselect(v.child, v.checks);
 }
 });
 },
 //是否所有的都被选中
 isallchecked(arr) {
 arr.forEach((v, i) => {
 if (!v.checks) {
 this.key = false;
 }
 if (v.child) {
 this.isallchecked(v.child);
 }
 });
 },
 //设置父级为 未选中状态（父级的父级没改变-有bug）
 setparentfalse(arr, id, level) {
 arr.forEach((v, i) => {
 if (v._level == level - 1 && v.child) {
 v.child.forEach((val, ind) => {
 if (val.id == id) {
 v.checks = false;
 return false; //终止此次循环，减少循环次数
 }
 });
 }
 if (v.child) {
 this.setparentfalse(v.child, id, level);
 }
 });
 },
 //设置父级为 选中状态
 setparenttrue(arr, id, level) {
 arr.forEach((v, i) => {
 if (v._level == level - 1 && v.child) {
 let key = true;
 let sameidkey = false;
 v.child.forEach((val, ind) => {
 if (val.id == id) {
 //确保当前点击的在该父级内
 sameidkey = true;
 }
 if (!val.checks) {
 key = false;
 }
 });
 if (key && sameidkey) {
 v.checks = true;
 }
 }
 if (v.child) {
 this.setparentfalse(v.child, id, level);
 }
 });
 },
 //某个复选框被点击时
 toselect(row) {
 console.log(row);
 // row._expanded = row.checks;//选中后是否展开
 //1、若有子集先让子选中
 if (row.child) {
 this.setchildtobeselect(row.child, row.checks);
 }
 //2、然后判断是否全选中
 this.key = true; //重置为true，防止上次已经是false的状态
 this.isallchecked(this.formatData);
 //3、设置多选框的状态
 if (!row.checks) {
 this.setparentfalse(this.formatData, row.id, row._level); //设置父级选中的状态为false
 document.getElementById("chooseall").checked = false; //设置全选框的状态
 } else {
 this.setparenttrue(this.formatData, row.id, row._level); //设置父级选中的状态为true
 }
 if (this.key) {
 document.getElementById("chooseall").checked = true; //设置全选框的状态
 }
 }
 },
 mounted() {
 this.$nextTick(() => {
 var that = this;
 const all = document.getElementById("chooseall");
 all.onchange = function(e) {
 console.log(all.checked);
 if (all.checked == true) {
 that.setchildtobeselect(that.formatData, true);
 } else {
 that.setchildtobeselect(that.formatData, false);
 }
 };
 });
 }
};
</script>
<style rel="stylesheet/css">
@keyframes treeTableShow {
 from {
 opacity: 0;
 }
 to {
 opacity: 1;
 }
}
@-webkit-keyframes treeTableShow {
 from {
 opacity: 0;
 }
 to {
 opacity: 1;
 }
}
</style>
 
<style scoped>
.ms-tree-space {
 position: relative;
 top: 1px;
 display: inline-block;
 font-style: normal;
 font-weight: 400;
 line-height: 1;
 width: 18px;
 height: 14px;
}
.ms-tree-space::before {
 content: "";
}
.processContainer {
 width: 100%;
 height: 100%;
}
table td {
 line-height: 26px;
}
.tree-ctrl {
 position: relative;
 cursor: pointer;
 color: #2196f3;
 margin-left: -18px;
}
</style>

二：在需要的地方引入该组件：

例如：在component文件夹下新建a.vue:

<tree-table :data="data" :columns="columns" border/>

import treeTable from "./TreeTable";
components: { treeTable },
data() {
 return {
 columns: [
 {
 text: "事件",
 value: "event",
 width: 200
 },
 {
 text: "ID",
 value: "id"
 }
 ],
 data: [
 {
 id: 0,
 event: "事件1",
 timeLine: 50,
 comment: "无"
 },
 {
 id: 1,
 event: "事件1",
 timeLine: 100,
 comment: "无",
 children: [
 {
 id: 2,
 event: "事件2",
 timeLine: 10,
 comment: "无"
 },
 {
 id: 3,
 event: "事件3",
 timeLine: 90,
 comment: "无",
 children: [
 {
 id: 4,
 event: "事件4",
 timeLine: 5,
 comment: "无"
 },
 {
 id: 5,
 event: "事件5",
 timeLine: 10,
 comment: "无"
 },
 {
 id: 6,
 event: "事件6",
 timeLine: 75,
 comment: "无",
 children: [
 {
 id: 7,
 event: "事件7",
 timeLine: 50,
 comment: "无",
 children: [
 {
 id: 71,
 event: "事件71",
 timeLine: 25,
 comment: "xx"
 },
 {
 id: 72,
 event: "事件72",
 timeLine: 5,
 comment: "xx"
 },
 {
 id: 73,
 event: "事件73",
 timeLine: 20,
 comment: "xx"
 }
 ]
 },
 {
 id: 8,
 event: "事件8",
 timeLine: 25,
 comment: "无"
 }
 ]
 }
 ]
 }
 ]
 }
 ]
 };
 },

最终效果：

这样就大工告成了，想要了解更多，可以关注 vue-element-admin，一个很不错的后台管理模版