求助！webstorm环境下，element-ui表格的数据传入控制台了，但是为什么就是不能展示在页面上？

Question

mainPage.vue文件：

<template>
  <div id="mainPage">
    <el-row>
      <el-col :span="24">
<!--        <a-table :columns="columns" :data="this.data" rowKey='uid'>
      </a-table>-->
        <el-table size="mini" :columns="master_user.columns" :data="master_user.data" border style="width: 100%" highlight-current-row>
<!--          <el-table-column type="index"></el-table-column>-->
          <el-table-column v-for="(v,i) in master_user.columns" :prop="v.dataIndex" :label="v.title" :key="i">
            <template slot-scope="scope">
                            <span v-if="scope.row.isSet">
                                <el-input size="mini" placeholder="请输入内容" v-model="master_user.sel[v.dataIndex]">
                                </el-input>
                            </span>
              <span v-else>{{scope.row[v.dataIndex]}}</span>
            </template>
          </el-table-column>
          <el-table-column label="操作" width="100">
            <template slot-scope="scope">
                            <span class="el-tag el-tag--info el-tag--mini" style="cursor: pointer;" @click="pwdChange(scope.row,scope.$index,true)">
                                {{scope.row.isSet?'保存':"修改"}}
                            </span>
              <span v-if="!scope.row.isSet" class="el-tag el-tag--danger el-tag--mini" @click="deleteRow(scope.$index,master_user.data)" style="cursor: pointer;">
                                删除
                            </span>
              <span v-else class="el-tag  el-tag--mini" style="cursor: pointer;" @click="pwdChange(scope.row,scope.$index,false)">
                                取消
                            </span>
            </template>
          </el-table-column>
        </el-table>
      </el-col>
      <el-col :span="24">
        <div class="el-table-add-row" style="width: 99.2%;" @click="addMasterUser()"><span>+ 添加</span></div>
      </el-col>
    </el-row>
  </div>
</template>

<!--
<script src="https://unpkg.com/vue@2.5.17/dist/vue.min.js"></script>
-->
<!--<script src="https://unpkg.com/element-ui/lib/index.js"></script>-->


<script>
/*var generateId = {
  _count: 1,
  get(){return ((+new Date()) + "_" + (this._count++))}
};*/

export default {
  name: 'mainPage',
  components: {

  },
  data() {
    return {
      master_user:{
        sel: null,//选中行
        columns: [

          {
            title: '编号',//名称
            dataIndex: 'uid',//数据标志
            key: 'uid',
            ellipsis: true,
            scopedSlots: { customRender: 'uid' },
          },
          {
            title: '姓名',
            dataIndex: 'uname',
            key: 'uname',
            /*width: 100,*/
            ellipsis: true,
          },
          {
            title:'密码',
            dataIndex: 'upwd',
            key:'upwd',
            ellipsis: true,
          },
          {
            title: '国籍',
            dataIndex: 'nationality',
            key: 'nationality',
            ellipsis: true,
          },
          {
            title: '所在队伍',
            dataIndex: 'team',
            key: 'team',
            ellipsis: true,
          },
          {
            title: '位置',
            dataIndex: 'position',
            key: 'position',
            ellipsis: true,
          },
          /*{
            title:'操作',
            key:'operation',
            scopedSlots: { customRender: 'operation' },
            ellipsis: true,
          }*/
        ],
        data: [],
      }
    };
  },
  created:function() {
    console.log('created');
    this.$nextTick(() => {
      // 在此处执行你要执行的函数
      this.getUsers();

    })
  },
  methods: {

    onOpenChange (openKeys) {
      const latestOpenKey = openKeys.find(key => this.openKeys.indexOf(key) === -1);
      if (this.rootSubmenuKeys.indexOf(latestOpenKey) === -1) {
        this.openKeys = openKeys;
      } else {
        this.openKeys = latestOpenKey ? [latestOpenKey] : [];
      }
    },

    //分页获得所有的用户
    getUsers () {
      var _this = this;
      _this.$axios.post('/api/getUsers',
          _this.$qs.stringify({
            page: 1,
            number: 10
          })
      ).then(function (response) {
        /*alert("getUsers请求成功");*/
        console.log("打印response.data：");
        console.log(JSON.stringify(response.data))
        console.log("打印list：");
        console.log(response.data.data.list)
        _this.data = response.data.data.list;
        console.log("this.data" + _this.data)
      }).catch(function (error) {
        console.log(error);
        /*alert("getUsers请求失败")*/
      });
    },



    //读取表格数据
    readMasterUser() {
      //根据实际情况，自己改下啊
      this.master_user.data.map(i => {
        i.id = generateId.get();//模拟后台插入成功后有了id
        i.isSet=false;//给后台返回数据添加`isSet`标识
        return i;
      });
    },
    //添加账号
    addMasterUser() {
      for (let i of this.master_user.data) {
        if (i.isSet) return this.$message.warning("请先保存当前编辑项");
      }
      let j = { id: 0, "type": "", "addport": "", "user": "", "pwd": "", "info": "", "isSet": true, "_temporary": true };
      this.master_user.data.push(j);
      this.master_user.sel = JSON.parse(JSON.stringify(j));
    },
    //修改
    pwdChange(row, index, cg) {
      //点击修改 判断是否已经保存所有操作
      var _this = this;
      for (let i of _this.master_user.data) {
        if (i.isSet && i.id != row.id) {
          _this.$message.warning("请先保存当前编辑项");
          return false;
        }
      }
      //是否是取消操作
      if (!cg) {
        if (!_this.master_user.sel.id) _this.master_user.data.splice(index, 1);
        return row.isSet = !row.isSet;
      }
      //提交数据
      if (row.isSet) {
        //项目是模拟请求操作  自己修改下
        (function () {

          let data = JSON.parse(JSON.stringify(_this.master_user.sel));
          for (let k in data) row[k] = data[k];
          _this.$message({
            type: 'success',
            message: "保存成功!"
          });
          //然后这边重新读取表格数据
          _this.readMasterUser();
          row.isSet = false;
        })();
      } else {
        _this.master_user.sel = JSON.parse(JSON.stringify(row));
        row.isSet = true;
      }
    },
    deleteRow(index, rows) {
      //删除
      rows.splice(index, 1);
    }
  }

}
</script>

<style>

.el-table-add-row {
  margin-top: 10px;
  width: 100%;
  height: 34px;
  border: 1px dashed #c1c1cd;
  border-radius: 3px;
  cursor: pointer;
  justify-content: center;
  display: flex;
  line-height: 34px;
}

</style>

main.js文件：

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
import axios from 'axios'
import qs from 'qs'
import Antd from 'ant-design-vue'
import 'ant-design-vue/dist/antd.css'
import mainPage from './components/mainPage'
import ElementUI from 'element-ui' //element-ui的全部组件
import 'element-ui/lib/theme-chalk/index.css'//element-ui的css


Vue.use(ElementUI) //使用elementUI
Vue.use(Antd)
Vue.prototype.$axios = axios

Vue.prototype.$qs = qs
Vue.config.productionTip = false

/* eslint-disable no-new */
/*在js里面，new 一个对象，需要赋值给某个值（变量），用Vue实例化的时候，不需要赋值给值（变量），
所以要单独给配一条规则，给new Vue这行代码上面加这个注释，把这行代码规则的校验跳过，通过eslint-disable。*/
new Vue({
  el: '#app',
  router,
  components: { App,mainPage },
  template: '<App/>'
})
/*new Vue({
 el: '#test',
  router,
 components: { test },
  template: '<test/>'
})*/
new Vue({
  el: '#mainPage',
  router,
  components: { mainPage },
  template: '<main-page/>'
})

webstorm环境下，element-ui表格的数据传入控制台了，但是为什么就是不能展示在页面上？望解答，非常非常感谢

Answer 1

看了你的代码发现你并没有给master_user.data赋值。
你代码中给data赋值，但是并没有给master_user对象中data属性赋值，导致的table树没有获取到数据。
这里应该改成

_this.master_user.data = response.data.data.list