SpringMVC文件下载

@Override
public ResponseEntity<byte[]> downLoadFiles(String ids) {
    String[] idArray = ids.split(",");
    ZipOutputStream zipOutStream = null;
    FileInputStream fileInputStream = null;
    try {
        zipOutStream = new ZipOutputStream(new FileOutputStream("borrowFile.zip"));
        for (String idStr : idArray) {
            Attachment attachment = attachmentService.findById(Long.parseLong(idStr));
            OSSObject ossObject =  ossClient.getObject(bucketName,path+attachment.getAttachmentName());
            zipOutStream.putNextEntry(new ZipEntry(attachment.getAttachmentOriginalName()));
            writeToZip(zipOutStream,ossObject.getObjectContent());
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }finally {
        try {
            zipOutStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    try {
        fileInputStream = new FileInputStream("borrowFile.zip");
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    return buildResponseEntity(fileInputStream,"借阅移交清单.zip");
}


private void writeToZip(ZipOutputStream zipOutputStream,InputStream inputStream) throws IOException {
    int temp = 0;
    while ((temp = inputStream.read()) != -1){
        zipOutputStream.write(temp);
    }
    inputStream.close();
}

/**
 * 构建下载类
 * @param inputStream 文件输入流
 * @param fileName 文件名
 * @return
 */
public static ResponseEntity<byte[]> buildResponseEntity(InputStream inputStream,String fileName) {
    byte[] body = null;
    //获取文件
    ResponseEntity<byte[]> response=null ;
    InputStream is = null;
    try {
        is = inputStream;
        body = new byte[is.available()];
        is.read(body);
        HttpHeaders headers = new HttpHeaders();
        fileName = URLEncoder.encode(fileName, "UTF-8");
        //设置文件类型
        headers.add("Content-Disposition", "attchement;filename=" + fileName);
        //设置Http状态码
        HttpStatus statusCode = HttpStatus.OK;
        //返回数据
        response = new ResponseEntity<byte[]>(body, headers, statusCode);
    } catch (Exception e) {
        e.printStackTrace();
    }finally {
        if(null != is){
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return response;
}