HttpClient 无法 302 此链接？
我发现 httpclient 似乎没有处理重定向的网址：
应该 302 到： http://www.mtv.com/news/articles/1647243/ 20100907/story.jhtml
当我查看浏览器中的标题时，一切看起来都很好：
HTTP/1.1 302 Moved Temporarily
Content-Type: text/html; charset=UTF-8
Location: http://www.mtv.com/news/articles/1647243/20100907/story.jhtml
Content-Length: 258
Date: Wed, 08 Sep 2010 18:40:21 GMT
Expires: Wed, 08 Sep 2010 18:40:21 GMT
Cache-Control: private, max-age=0
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
Server: GSE
Set-Cookie: PREF=ID=024209255b405b06:TM=1283971221:LM=1283971221:S=AG-13_7Cjg_EqlRY; expires=Fri, 07-Sep-2012 18:40:21 GMT; path=/; domain=.google.com
Connection: close
但是 httpclient 似乎没有给我最终的 URL。这是我正在使用的代码
HttpHead httpget = null;
HttpHost target = null;
HttpUriRequest req = null;
String startURL = "http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNGrJk-F7Dmshmtze2yhifxRsv8sRg&url=http://www.mtv.com/news/articles/1647243/20100907/story.jhtml";
HttpContext localContext = new BasicHttpContext();
localContext.setAttribute(ClientContext.COOKIE_STORE,HttpClientFetcher.emptyCookieStore);
httpget = new HttpHead(startURL);
HttpResponse response = httpClient.execute(httpget, localContext);
Header[] test = response.getAllHeaders();
for(Header h: test) {
logger.info(h.getName()+ ": "+h.getValue());
}
target = (HttpHost) localContext.getAttribute( ExecutionContext.HTTP_TARGET_HOST );
req = (HttpUriRequest) localContext.getAttribute( ExecutionContext.HTTP_REQUEST );
// STILL PRINTS OUT THE GOOGLE NEWS LINK
finalURL = target+""+req.getURI();
我做错了什么吗？谢谢
I found a URL that httpclient doesn't seem to be handling redirects on:
should 302 to:
http://www.mtv.com/news/articles/1647243/20100907/story.jhtml
when I look at the headers in the browser everything looks good:
HTTP/1.1 302 Moved Temporarily
Content-Type: text/html; charset=UTF-8
Location: http://www.mtv.com/news/articles/1647243/20100907/story.jhtml
Content-Length: 258
Date: Wed, 08 Sep 2010 18:40:21 GMT
Expires: Wed, 08 Sep 2010 18:40:21 GMT
Cache-Control: private, max-age=0
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
Server: GSE
Set-Cookie: PREF=ID=024209255b405b06:TM=1283971221:LM=1283971221:S=AG-13_7Cjg_EqlRY; expires=Fri, 07-Sep-2012 18:40:21 GMT; path=/; domain=.google.com
Connection: close
However httpclient doesn't seem to give me the final URL. Here is the code I was using
HttpHead httpget = null;
HttpHost target = null;
HttpUriRequest req = null;
String startURL = "http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNGrJk-F7Dmshmtze2yhifxRsv8sRg&url=http://www.mtv.com/news/articles/1647243/20100907/story.jhtml";
HttpContext localContext = new BasicHttpContext();
localContext.setAttribute(ClientContext.COOKIE_STORE,HttpClientFetcher.emptyCookieStore);
httpget = new HttpHead(startURL);
HttpResponse response = httpClient.execute(httpget, localContext);
Header[] test = response.getAllHeaders();
for(Header h: test) {
logger.info(h.getName()+ ": "+h.getValue());
}
target = (HttpHost) localContext.getAttribute( ExecutionContext.HTTP_TARGET_HOST );
req = (HttpUriRequest) localContext.getAttribute( ExecutionContext.HTTP_REQUEST );
// STILL PRINTS OUT THE GOOGLE NEWS LINK
finalURL = target+""+req.getURI();
Am I doing something wrong? thanks
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从 httpclient 邮件列表中找到了答案...
Google 不会将 HEAD 和 GET 视为相同，因此 GET 使用 302 重定向，而 HEAD 请求给出 200 OK
Found the answer from the httpclient mailing list...
Google doesn't treat a HEAD and GET the same, so the GET redirects with 302 and the HEAD request gives a 200 OK