获取文件集合并生成zip压缩包进行页面下载_多个视频octet-stream 合并-优快云博客

本文链接：https://blog.youkuaiyun.com/wd422988145/article/details/120741269

这段代码主要实现了根据用户请求，将多个文件进行压缩并下载的功能。它首先获取文件名，然后设置日期格式，并通过响应设置内容类型和文件名。接着，针对不同浏览器的兼容性问题，对文件名进行编码。通过ZipOutputStream创建压缩流，遍历并读取每个文件内容，将其写入压缩包中。整个过程中涉及了文件输入流、输出流以及ZipEntry的使用。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

try {
    String fileName = courseWare.getTitle();
    SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd");
    //设置字符集和文件后缀名
    response.setContentType("application/octet-stream");

    //兼容问题
    String name = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");
    if (request.getHeader("User-Agent").toUpperCase().indexOf("TRIDENT") > -1 || request.getHeader("User-Agent").toUpperCase().indexOf("MSIE") > -1) {
        name =  URLEncoder.encode(fileName, "UTF-8");
    }
    // 设置文件名称
    response.setHeader("Content-Disposition", "attachment; filename=" + name + ".zip");
    OutputStream out = response.getOutputStream();

    // 声明压缩流对象
    ZipOutputStream zipOut = new ZipOutputStream(out) ;
    // 定义文件输入流
    int temp = 0;
    File file;
    byte[] buffer = new byte[1024 * 8];
    Field[] fields = courseWare.getExtendVo().getClass().getDeclaredFields();
    for (Field field : fields) {
        field.setAccessible(true);
        String pkAttached =  field.get(courseWare.getExtendVo()).toString();

        if(pkAttached != null && !"".equals(pkAttached)){
            Attached attached = attachedService.query(pkAttached);
            if(attached != null && attached.getFilePath() != null && !"".equals(attached.getFilePath())){
                String docFileName = attached.getFilePath();
                docFileName = docFileName.replace(ip,uploadurl);
                file = new File(docFileName);
                InputStream input = new FileInputStream(file);
                zipOut.putNextEntry(new ZipEntry(attached.getFileName()));
                while((temp = input.read(buffer)) > 0) {
                    zipOut.write(buffer, 0, temp);
                }
                input.close();
            }
        }
    }

    String pkAttached =  courseWare.getUrl();
    if(pkAttached != null && !"".equals(pkAttached)){
        Attached attached = attachedService.query(pkAttached);
        if(attached != null && attached.getFilePath() != null && !"".equals(attached.getFilePath())){
            String docFileName = attached.getFilePath();
            docFileName = docFileName.replace(ip,uploadurl);
            file = new File(docFileName);
            InputStream input = new FileInputStream(file);
            zipOut.putNextEntry(new ZipEntry(attached.getFileName()));
            while((temp = input.read(buffer)) > 0) {
                zipOut.write(buffer, 0, temp);
            }
            input.close();
        }
    }

    zipOut.flush();
    zipOut.close();
} catch (Exception e) {
    e.printStackTrace();
}