Java把文件压缩然后下载

一边压缩一边下载,前端写法可以参考Java通过流下载文件以及相关优化

response.setContentType("application/octet-stream");
        response.setHeader("Content-Disposition", "attachment; filename=pdf.zip");
        response.setHeader("filename", fileInfo.getFileVersion() + ".zip");
        response.setContentLength(allFileSize);
        BufferedInputStream bufferedInputStream;
        ZipOutputStream zipOut = null;
        try {
            zipOut = new ZipOutputStream(response.getOutputStream());
            for (FileInfo info : fileInfoList) {
                bufferedInputStream = new BufferedInputStream(new FileInputStream(info.getAbsolutePath()));
                zipOut.putNextEntry(new ZipEntry(info.getFileName()));
                int temp = 0;
                while ((temp = bufferedInputStream.read()) != -1) { // 读取内容
                    zipOut.write(temp);    // 压缩输出
                }
                bufferedInputStream.close();
            }
        } catch (Exception e) {
            e.printStackTrace();

        } finally {
            // 关闭流
            try {
                zipOut.flush();
                zipOut.close();

            } catch (IOException e) {
                e.printStackTrace();
            }
        }
posted @ 2022-04-08 17:30  昨夜风雨声  阅读(15)  评论(0编辑  收藏  举报  来源