Question

我有一个使用Jetty版本8发送http帖子的程序。我的响应处理程序工作，但我得到一个http响应代码303，这是一个重定向。我读到了一条评论，即jetty 8支持跟踪这些重定向，但我无法弄清楚如何设置它。我已经尝试查看javadocs，我找到了RedirectListener类，但没有详细说明如何使用它。我试图猜测如何编码它没有奏效，所以我被困住了。感谢所有帮助！

修改

我浏览了一下jetty源代码，发现它只会在响应代码为301或302时重定向。我能够覆盖RedirectListener以使其处理休止代码303。之后，Joakim的代码完美无缺。

public class MyRedirectListener extends RedirectListener
{
   public MyRedirectListener(HttpDestination destination, HttpExchange ex)
   {
      super(destination, ex);
   }

   @Override
   public void onResponseStatus(Buffer version, int status, Buffer reason)
       throws IOException
   {
      // Since the default RedirectListener only cares about http
      // response codes 301 and 302, we override this method and
      // trick the super class into handling this case for us.
      if (status == HttpStatus.SEE_OTHER_303)
         status = HttpStatus.MOVED_TEMPORARILY_302;

      super.onResponseStatus(version,status,reason);
   }
}

Answer 1

足够简单

HttpClient client = new HttpClient();
client.registerListener(RedirectListener.class.getName());
client.start();

// do your exchange here
ContentExchange get = new ContentExchange();
get.setMethod(HttpMethods.GET);
get.setURL(requestURL);

client.send(get);
int state = get.waitForDone();
int status = get.getResponseStatus();
if(status != HttpStatus.OK_200)
   throw new RuntimeException("Failed to get content: " + status);
String content = get.getResponseContent();

// do something with the content

client.stop();

获取Jetty HttpClient以遵循重定向

1 个答案: