Java 如何重用HttpUrlConnection？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/16256681/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to Reuse HttpUrlConnection?
提问by user967710
I am interested in reusing an HttpUrlConnection (as part of a statefull protocol between server and client that I'm developing). I know that there is an Connection=keep-alive header for persistent http. Now, I want to know how to reuse such a conenction. I have written this code:
我对重用 HttpUrlConnection（作为我正在开发的服务器和客户端之间的有状态协议的一部分）感兴趣。我知道有一个 Connection=keep-alive 标头用于持久的 http。现在，我想知道如何重用这样的连接。我写了这段代码：
URL u = new java.net.URL("http://localhost:8080/Abc/Def");
HttpURLConnection c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setRequestProperty("Connection", "keep-alive");
c.setHeader("A","B");
c.getInputStream() //here I see that server gets my messages (using DEBUG)
c.setHeader("B","C"); //
Now how do I resend this "B" header to the server, I tried re-connect etc,but nothing gets it to work.
现在如何将这个“B”标头重新发送到服务器，我尝试重新连接等，但没有任何效果。
And the server also perform response.setHeader("Connection", "keep-alive");
而且服务器也执行 response.setHeader("Connection", "keep-alive");
I've looked in many forums, but no one wrote about this. Maybe HttpURLConnectiondoesn't handle this?
我看了很多论坛，但没有人写过这个。也许HttpURLConnection不处理这个？
采纳答案by user207421
You don't. You close this one and create a new one. It does TCP connection pooling and keepalive behind the scenes.
你没有。你关闭这个并创建一个新的。它在幕后进行 TCP 连接池和 keepalive。
