前端自己导出exls

<template>
  <div class="impData">
    <button @click="impData">导出</button>
  </div>
</template>
<script>
import XLSX from "xlsx";
export default {
  name: "ImpTemplate",
  data() {
    return {
      baseData: [

                                 {

                                 "物料编码": "12312","物料名称": "请问阿斯顿","nihao": "请问阿斯顿",

                                 },

      ],
    };
  },
  created() {},
  mounted() {},
  methods: {
    impData() {
      //发送请求获取数据
      this.dowloadTemplate(this.baseData);
    },
    dowloadTemplate(downData) {
      var wopts = {
        bookType: "xlsx",
        bookSST: true,
        type: "binary",
      };
      var wb = {
        SheetNames: ["模版"],
        Sheets: {},
        Props: {},
      };
      let data = XLSX.utils.json_to_sheet(downData);
      data["!cols"] = [{ wch: 10 }, { wch: 15 }];
      wb.Sheets["模版"] = data;
      this.saveAs(new Blob([this.s2ab(XLSX.write(wb, wopts))],{ype: "application/octet-stream",}),"模版" + "." + (wopts.bookType == "biff2" ? "xls" : wopts.bookType))
    },
    saveAs(obj, fileName) {
      var tmpa = document.createElement("a");
      tmpa.download = fileName || "下载";
      tmpa.href = URL.createObjectURL(obj);
      tmpa.click();
      setTimeout(() => {
        URL.revokeObjectURL(obj);
      }, 10000);
    },
    s2ab(s) {
      if (typeof ArrayBuffer !== "undefined") {
        let buf = new ArrayBuffer(s.length);
        var view = new Uint8Array(buf);
        for (let j = 0; j != s.length; ++j) {
          view[j] = s.charCodeAt(j) & 0xff;
        }
        return buf;
      } else {
        let buf = new Array(s.length);
        for (let i = 0; i != s.length; ++i) {
          buf[i] = s.charCodeAt(i) & 0xff;
        }
        return buf;
      }
    },
  },
};
</script>
<style lang="scss" scoped>
$buttoncolor: red;
button {
  color: $buttoncolor;
}
</style>