blocks|key|939150|text|你在代理背后吗？这段代码适用于我，并打印出我通过浏览器看到的相同文本。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|939151|final+URL+url+=+new+URL("http://www.uniprot.org/uniprot/?query=mnemonic%253aNUGM_HUMAN&format=tab&columns=id,entry%2520name,reviewed,organism,length");
final+URLConnection+conn+=+url.openConnection();
final+InputStream+is+=+conn.getInputStream();
System.out.println(IOUtils.toString(is));|code-block|syntax|javascript|939152|conn是HttpURLConnection的一个实例|offset|length|style|CODE|939153|entityMap|0|LINK|mutability|MUTABLE|url|http://download.oracle.com/javase/6/docs/api/java/net/HttpURLConnection.html^0|0|0|0|4|5|H|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]]|9|@$I|Z|J|10|1|11]]|A|$]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Are you behind a proxy? This code works for me and prints out the same text I see through a browser.

<pre><code>final URL url = new URL("http://www.uniprot.org/uniprot/?query=mnemonic%3aNUGM_HUMAN&amp;format=tab&amp;columns=id,entry%20name,reviewed,organism,length");
final URLConnection conn = url.openConnection();
final InputStream is = conn.getInputStream();
System.out.println(IOUtils.toString(is));
</code></pre>

<code>conn</code> is an instance of <a href="http://download.oracle.com/javase/6/docs/api/java/net/HttpURLConnection.html" rel="nofollow noreferrer">HttpURLConnection</a>

blocks|key|1153506|text|作为www.uniprot.org的开发人员，我的优势在于能够查看请求日志。根据日志，在过去的一年中，我们没有发送505响应码。在任何情况下，我们的服务器都能理解http+1请求以及默认的http1.1+(尽管您可能得不到预期的结果)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1153507|这让我怀疑可能是某种数据损坏了。或者您受到硬件故障的影响(最近我们在交换机和整个数据中心方面遇到了一些问题;)。在任何情况下，如果您对uniprot.org有任何疑问或问题，请联系help@uniprot.org，这样我们就可以看看我们是否可以帮助/解决这个问题。|1153508|您的代码片段看起来很正常，应该可以工作。|1153509|向您致敬，Jerven+Bolleman|1153510|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

AS a developer at www.uniprot.org I have the advantage of being able to look in the request logs. In the last year according to the logs we have not send a 505 response code. In any case our servers do understand http 1 requests as well as the default http1.1 (though you might not get the results that you expect).

That makes me suspect there was either some kind of data corruption on the way. Or you where affected by a hardware failure (lately we have had some trouble with a switch and a whole datacentre ;). In any case if you ever have questions or problems with uniprot.org please contact help@uniprot.org then we can see if we can help/fix the problem.

Your code snippet seems normal and should work.

Regards,
Jerven Bolleman

blocks|key|939248|text|Tomcat中包含空格的URL存在一些问题。要解决此问题，您需要使用URLEncoder对url进行编码。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|939249|示例(注意空格)：|939250|String+url="http://example.org/test+test2/index.html";
String+encodedURL=java.net.URLEncoder.encode(url,"UTF-8");
System.out.println(encodedURL);+//outputs+http%253A%252F%252Fexample.org%252Ftest%2Btest2%252Findex.html|code-block|syntax|javascript|939251|entityMap^0|Y|A|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

There has been some issues in Tomcat with URLs containing space in it. To fix the problem, you need to encode your url with <code>URLEncoder</code>.

Example (notice the space):

<pre><code>String url="http://example.org/test test2/index.html";
String encodedURL=java.net.URLEncoder.encode(url,"UTF-8");
System.out.println(encodedURL); //outputs http%3A%2F%2Fexample.org%2Ftest+test2%2Findex.html
</code></pre>

blocks|key|1153618|text|@posdef我遇到了相同的HTTP错误代码505问题。当我在Firefox中粘贴我在Java代码中使用的URL时，Chrome可以正常工作。但是通过代码给了IOException。但最后我终于知道url字符串中有方括号'(‘和')'，去掉它们就行了，所以看起来我需要和浏览器一样的URLEncodeing。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1153619|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

@posdef I was having same HTTP error code 505 problem. When I pasted URL that I was using in Java code in Firefox, Chrome it worked. But through code was giving IOException. But at last I came to know that in url string there were brackets '(' and ')', by removing them it worked so it seems I needed URLEncodeing same like browsers.

I have HTML based queries in my code and one specific kind seems to give rise to <code>IOExceptions</code> upon receiving 505 response from the server. I have looked up the 505 response along with other people who seemed to have similar problems. Apparently 505 stands for HTTP version mismatch, but when I copy the same query URL to any browser (tried firefox, seamonkey and Opera) there seems to be no problem. One of the posts I read suggested that the browsers might automatically handle the version mismatch problem.. 

I have tried to dig in deeper by using the nice developer tool that comes with Opera, and it looks like there is no mismatch in versions (I believe Java uses HTTP 1.1) and a nice <code>200 OK</code> response is received. Why do I experience problems when the same query goes through my Java code? 

<pre><code> private InputStream openURL(String urlName) throws IOException{ 
 URL url = new URL(urlName);
 URLConnection urlConnection = url.openConnection();
 return urlConnection.getInputStream();
 }
</code></pre>

sample link: <code>http://www.uniprot.org/uniprot/?query=mnemonic%3aNUGM_HUMAN&amp;format=tab&amp;columns=id,entry%20name,reviewed,organism,length</code>

java.io.IOException: Server returns HTTP response code 505

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我在我的代码中有基于超文本标记语言的查询，当从服务器接收到505响应时，一种特定的查询似乎会引起IOExceptions。我和其他似乎有类似问题的人一起查看了505的回复。显然，505代表HTTP版本不匹配，但当我将相同的查询URL复制到任何浏览器(尝试过firefox、seamonkey和Opera)时，似乎没有问题...

问java.io.IOException:服务器返回505响应代码
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