Spring boot + Vue 文档下载

前端Vue代码：

downloadDocument (row) {
      let vm = this
      this.$ajax.post('/api/downloadDocument', row, {responseType: 'blob'})
        .then(function (res) {
          if (!res.data) {
            return
          }
          let url = window.URL.createObjectURL(new Blob([res.data]))
          let link = document.createElement('a')
          link.style.display = 'none'
          link.href = url
          link.setAttribute('download', row.fileName)

          document.body.appendChild(link)
          link.click()
        }
        ).catch(function (error) {
          let reader = new FileReader()
          reader.onload = function () {
            let jsonData = JSON.parse(this.result)
            vm.$message(jsonData.message)
          }
          reader.readAsText(error.response.data)
        })
    },

后端代码：

controller:

	@RequestMapping(value = "/downloadDocument", method = RequestMethod.POST)
	public void downloadDocument(@RequestBody DocumentDto documentDto, HttpServletResponse response)
			throws IOException {
		documentService.downloadDocument(documentDto, response.getOutputStream());
		response.flushBuffer();
	}

service:

	@Override
	public void downloadDocument(DocumentDto documentDto,  OutputStream os)  throws IOException {
		String fileName = documentDto.getFileName();
		Path documentPath = Paths.get(this.fileStorageLocation, documentDto.getFileFolderName()).toAbsolutePath()
				.normalize().resolve(fileName);
		org.apache.commons.io.FileUtils.copyFile(documentPath.toFile(), os);
	}

Good Luck,

Cheers!