Question

我有一段Java代码片段，它通过Web将二进制文件发送到REST客户端，遗憾的是编码二进制文件的multipartEntityBuilder添加了一些损坏文件的头文件，例如它添加了一个Content-Disposition而不是出现在原始文件中。

我该如何解决这个问题？

CloseableHttpClient httpclient = HttpClientBuilder.create().build();
HttpPost httpPost = new HttpPost(getRemoteUrlString() + "/webresources/file/upload");
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
multipartEntityBuilder.setMode(HttpMultipartMode.STRICT);
multipartEntityBuilder.setBoundary("custyom-mimetype-boundary");
multipartEntityBuilder.addPart("fileName", (StringBody) valuesList.get(0));
multipartEntityBuilder.addPart("file", (FileBody) valuesList.get(1));
httpPost.setEntity(multipartEntityBuilder.build());
httpPost.setEntity(multipartEntityBuilder.build());
HttpResponse response = null;
try
    {
       response = httpclient.execute(httpPost);
    }
catch (IOException ex)
    {     
            }

Answer 1

我发现只有解决方案是将标题保留在发送方并修改接收方，显然如果您没有先读取标题并丢弃它们，readBodyData函数也会读取标题。

//We read uselessHeaders otherwise readBodyData includes them and corrupts some files
String uselessHeaders = multipartStream.readHeaders();
multipartStream.readBodyData(byteArrayOutputStream);

MultipartEntityBuilder将Content-Disposition标头添加到二进制文件并破坏它

1 个答案: