如何保存球衣响应中的文件? [英] How to save a file from jersey response?

问题描述

我正在尝试使用Jersey从Web资源下载SWF文件.

I am trying to download a SWF file using Jersey from a web resource.

我已经编写了以下代码，但是无法正确保存文件:

I have written the following code, but am unable to save the file properly :

Response response = webResource.request(MediaType.APPLICATION_OCTET_STREAM)
  .cookie(cookie)
  .post(Entity.entity(form, MediaType.APPLICATION_FORM_URLENCODED_TYPE));

String binarySWF = response.readEntity(String.class);                                     
byte[] SWFByteArray = binarySWF.getBytes();       

FileOutputStream fos = new FileOutputStream(new File("myfile.swf"));
fos.write(SWFByteArray);
fos.flush();
fos.close();

可以节省下来，假定响应确实返回了SWF文件，因为response.getMediaType返回了application/x-shockwave-flash.

It is save to assume that the response does return a SWF file, as response.getMediaType returns application/x-shockwave-flash.

但是，当我尝试打开SWF时，什么也没有发生(也没有错误)，这表明我的文件不是根据响应创建的.

However when I try to open the SWF, nothing happen (also no error) which suggest that my file was not created from response.

推荐答案

我终于可以使用它了.

我发现可以直接使用getEntity检索response的InputStream的Jersey API(假设尚未读取).

I figured out reading the Jersey API that I could directly use getEntity to retrieve the InputStream of the response (assuming it has not been read yet).

使用getEntity检索从InputStream创建字节数组的InputStream和IOUtils#toByteArray，我设法使其起作用:

Using getEntity to retrieve the InputStream and IOUtils#toByteArray which create a byte array from an InputStream, I managed to get it to work :

Response response = webResource.request(MediaType.APPLICATION_OCTET_STREAM)
  .cookie(cookie)
  .post(Entity.entity(form, MediaType.APPLICATION_FORM_URLENCODED_TYPE));                                                  

InputStream input = (InputStream)response.getEntity();

byte[] SWFByteArray = IOUtils.toByteArray(input);  

FileOutputStream fos = new FileOutputStream(new File("myfile.swf"));
fos.write(SWFByteArray);
fos.flush();
fos.close();

请注意， IOUtils 是Apache的常用功能.

Note that IOUtils is a common Apache function.

这篇关于如何保存球衣响应中的文件?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！