VUE接收文件流并转换成Excel表格下载到本地:
一：安装vue自带的插件

npm install --save js-file-download

二：引入js-file-download

import fileDownload from 'js-file-download';

三：声明一个button

<el-form-item>
 
            <el-button type="link" :loading="loadingFlag" @click="exportExcel">导出</el-button>
 
</el-form-item> 

四，定义exportExcel事件

exportExcel(){
        let data = {//请求参数
          page: this.currentPage,
          pageSize: this.pageSize,
          param: this.searchData,
        };
        this.$confirm('确定导出？','操作提示',{
            confirmButtonText:'确定',
            cancelButtonText:'取消',
            type:'warning',
            center:true
        }).then(()=>{
          exportExcel(data).then( (res) => { //$api.exporPersontExcel或者api文件的接口
             
              let date= this.getDate();
              //fileDownload("blob字节流",“fileName”)
              fileDownload(res.data, "主产品提货单.xlsx");
 
              this.$message({
                message: '成功！',
                type: 'success'
              });
          })
          }).catch( err => {
            this.$message({
              type: 'error',
              message: '取消!'
            });
          })
        },

export const exportExcel = (data) => {
    return axios({
        url: `${prefix}sales/billMain/exportExcel`,
        method: 'post',
        data,
        'responseType':"blob" 
    })
}