日期格式的问题

后台需要以下几种的格式之一都行

我的本地代码

控制台打印出来是这样 Tue Apr 09 2019 10:20:30 GMT+0800 (中国标准时间) 

讲道理没错啊  完全符合

然而,事情往往没有那么简单

发送给后台时格式变成了这样

然后问了一下后台 他说没有做任何转换 让我搜一下格式转换

然后通过toString()这个方法成功把格式转为正确的格式!

但每次加载页面时也产生报错提示,发现原因是设置默认日期在获取表格数据之后执行了

以下是完整代码

<template>
  <div id="container">
    <!--      下拉选择框        -->
    <span>开始日期</span>
    <el-date-picker v-model="startDate" type="date" @change="startChange()"></el-date-picker>
    <span>结束日期</span>
    <el-date-picker v-model="endDate" type="date" @change="endChange()"></el-date-picker>
    <!-- <span>营业部</span>
    <el-select v-model="roleName" placeholder="请选择">
      <el-option v-for="item in roleList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
    </el-select>-->
    <!--      主要按钮        -->
    <el-button type="primary" @click="handleSearch()">查询</el-button>
    <!--      表格        -->
    <el-table :data="tableData" style="width: 100%;height:600px;">
      <!--      表格内操作        -->
      <el-table-column label="统计日期" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.openDate }}</span>
        </template>
      </el-table-column>
      <el-table-column label="branchNo" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.branchNo }}</span>
        </template>
      </el-table-column>
      <el-table-column label="营业部" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.branchName }}</span>
        </template>
      </el-table-column>
      <el-table-column label="姓名" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.clientName }}</span>
        </template>
      </el-table-column>
      <el-table-column label="资金账号" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.clientId }}</span>
        </template>
      </el-table-column>
      <el-table-column label="证件类型" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.idKind }}</span>
        </template>
      </el-table-column>
      <el-table-column label="证件号码" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.idNo }}</span>
        </template>
      </el-table-column>
      <el-table-column label="organFlag" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.organFlag }}</span>
        </template>
      </el-table-column>
      <el-table-column label="修改次数" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.count }}</span>
        </template>
      </el-table-column>
      <el-table-column label="类型" width="130">
        <template slot-scope="scope">
          <span style="margin-left: 10px">{{ scope.row.type }}</span>
        </template>
      </el-table-column>
    </el-table>
    <!--      分页        -->
    <el-pagination
      id="pagination"
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      @prev-click="handlePrevClick"
      @next-click="handleNextClick"
      :current-page="pageNo"
      :page-sizes="[4, 8, 12, 16, 20]"
      :page-size="limit"
      layout="total , prev, pager, next, jumper"
      :total="total"
      background
    ></el-pagination>
  </div>
</template>

<script>
import axios from "axios";
export default {
  data() {
    return {
      tableData: [],
      total: 0, //总条数
      limit: 10, //当前页显示条数
      pageNo: 1, //当前页码
      startDate: "",
      endDate: ""
    };
  },
  methods: {
    //获取表格数据
    getTableData() {
      axios
        .get(
          "api/monitor/detail/account-a",
          {
            params: {
              startDate: (this.startDate).toString(),
              endDate: (this.endDate).toString(),
              pageNo: this.pageNo,
              limit: 10
            }
          },
          {
            withCredentials: true
          }
        )
        .then(response => {
          if (response.data.code == 0) {
            this.tableData = response.data.content.list;
            console.log(this.tableData, "this.tableData");
            this.total = Number(response.data.content.totalElements); //给总条数赋值
          } else {
            this.$message({
              type: "info",
              message: response.data.message
            });
          }
        })
        .catch(error => {
          console.log(error);
        });
    },
    //查询操作
    handleSearch() {
      this.getTableData();
    },
    //分页按钮
    handleSizeChange(val) {
      this.limit = Number(`${val}`);
      console.log(`每页 ${val} 条`);
      this.getTableData();
    },
    handleCurrentChange(val) {
      this.pageNo = Number(`${val}`);
      console.log(this.limit);
      this.getTableData();
    },
    handlePrevClick(val) {
      //上一页
      this.pageNo = Number(`${val}`);
      console.log(`当前页: ${val}`);
      this.getTableData();
    },
    handleNextClick(val) {
      //下一页
      this.pageNo = Number(`${val}`);
      console.log(`当前页: ${val}`);
      this.getTableData();
    },
    //默认搜索条件
    defaultDate() {
      this.endDate = new Date(); //默认结束日期为当前日期
      const startDate = new Date();
      startDate.setTime(startDate.getTime() - 3600 * 1000 * 24 * 7);
      this.startDate = startDate; //默认开始日期为一周前
      console.log(this.startDate, this.endDate);
    },
    startChange() {
      console.log(this.startDate);
    },
    endChange() {
      console.log(this.endDate);
    }
  },
  mounted() {
    this.defaultDate(); //要在获取表格数据前面执行
    this.getTableData();
  }
};
</script>