关于后台返回文档流的文件下载

关于后台返回文档流的文件下载

<template>
         <i @click="downLoad(data)" class="downLoad">下载</i>
</template>

   //下载
       downLoad(val) {
          let url = val.httpUrl
          let fileTye = url.match(/.+\/(.+)$/)[1];
          let that = this;
          let formData = new FormData();
           formData.append('fileUrl',url);
            this.$http({
                url:api.archivesLoadFile,
                method:'POST',
                headers:headers('multipart/form-data'),
                responseType: 'blob',
                data: formData,
            }).then(function (res) {
                let result=res.data;

                    let url =  window.URL.createObjectURL(new Blob([result]));//处理文档流
                    let link = document.createElement('a');
                    link.style.display = 'none';
                    link.href = url;

                    link.download = fileTye;
                    document.body.appendChild(link);
                    link.click();


            }).catch(function (error) {
                that.$message.error(error);
            });
       },