AppEngine gzip压缩 [英] AppEngine gzip compressing

问题描述

我有以下代码： $ b $

我试图从GAE服务器上gzip响应，但在Content-Encoding中收到null。 b

  connection =（HttpURLConnection）url.openConnection（）; 
 connection.setRequestMethod（POST）; 
 connection.setRequestProperty（Content-Type，
application / json; charset = utf-8）; //application / json; charset = utf-8
 connection.setRequestProperty（Accept-Encoding，gzip）; 
 connection.setRequestProperty（User-Agent，gzip）; 
 connection.setUseCaches（false）; 
 connection.setDoInput（true）; 
 connection.setDoOutput（true）; 
 
 //写入
 //读取
 
 System.out.println（Content-Encoding+ connection.getContentEncoding（））; 
  

我读过GAE服务器上的压缩文件。那么可能是什么问题？App Engine前端服务器依赖于许多因素，包括<$ c $

解决方案 c> Accept-Encoding 和 User-Agent 标题来确定它们是否应该压缩响应。他们这样做是因为有许多用户代理声称接受gzip响应，但实际上无法理解他们。

尝试将您的用户代理设置为某种明智的（而不是'gzip'，这不是真正的用户代理），看看这是否有任何区别。

I'm trying to gzip responses from GAE server, but receive null in Content-Encoding.

I have the following code:

connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", 
          "application/json; charset=utf-8"); //"application/json; charset=utf-8"
connection.setRequestProperty("Accept-Encoding", "gzip");
connection.setRequestProperty("User-Agent", "gzip");
connection.setUseCaches (false);
connection.setDoInput(true);
connection.setDoOutput(true);

//write
//read

System.out.println("Content-Encoding " + connection.getContentEncoding());

I've read that on GAE servers do compressing automatically. So what can be the problem?

解决方案

The App Engine frontend servers rely on a number of factors, including the Accept-Encoding and User-Agent headers to determine if they should compress responses. They do this because there are a number of user agents out there that claim to accept gzipped responses, but actually can't understand them.

Try setting your user agent to something sensible (and not 'gzip', which isn't a real user agent), and see if that makes any difference.

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