从截断的Python中的POST请求中读取二进制数据

Question

我正在使用POST从java发送二进制数据。这是java代码：

URL url = new URL(saveURI);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();

urlConnection.setRequestMethod("POST");
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.setInstanceFollowRedirects(false);
urlConnection.setUseCaches(false);

urlConnection.setRequestProperty("Content-Type", "application/octet-stream");
urlConnection.setRequestProperty("charset", "utf-8");
urlConnection.setRequestProperty("Content-Length", Integer.toString(length));
OutputStream out = new BufferedOutputStream(urlConnection.getOutputStream());
out.write(data);
out.flush();
out.close();

大小为150216字节。 python代码：

#!/usr/bin/env python
# -*- coding: UTF-8 -*-

import sys

print "Content-Type: text/plain;charset=utf-8"
print

data = sys.stdin.read()
print len(data)

profile= profile_pb2.ProtoCharacter()
profile.ParseFromString(data)
if profile.IsInitialized():
    ProfileWork.saveProfile(profile)
    print profile.tag

给我22.这可能是什么问题？

编辑：添加了更多代码