Question

我有一个zip文件作为字节数组（byte []），我可以使用

将其写入文件系统

        FileOutputStream fos = new FileOutputStream("C:\\test1.zip");
        fos.write(decodedBytes);  // decodedBytes is the zip file as a byte array 
        fos.close();

我想将字节数组直接下载，而不是将其写入文件并将其读取为下载文件，我试过这个，

    response.setContentType("application/zip");
    response.setHeader("Content-Disposition", "attachment; filename=\"File.zip\"");
    ServletOutputStream outStream = response.getOutputStream();
    outStream.write(decodedBytes);  // decodedBytes is the zip file as a byte array

这不起作用，我得到空文件。如何将字节数组作为下载？

更新我添加了finally子句并关闭了ServletOutputStream并且它工作正常。

    }catch (Exception e) {
        Log.error(this, e);
    } finally {
        try{
            if (outStream != null) {
                outStream.close();              
            }
        } catch (IOException e) {
            Log.error(this, "Download: Error during closing resources");
        }
    }

Pankaj解决方案也有效。

Answer 1

尝试以下：

ServletOutputStream outStream = response.getOutputStream();
response.setContentType("application/zip");
response.setHeader("Content-Disposition", "attachment; filename="DATA.ZIP"");
outStream.write(decodedBytes);
outStream.flush();

Java - 将字节数组作为下载

1 个答案: