java - FileNotFoundException with 404 status for valid URL on HTTP GET request -

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i have following code perform request on following url:

http://rt.hnnnglmbrg.de/server.php/somereferencenumber

however, here output logcat:

java.io.filenotfoundexception: http://rt.hnnnglmbrg.de/server.php/6

why return 404 when url valid?

here connect code:

/**  * performs http request returns base64 data server  *   * @param ref  *            accident's reference  * @return base64 data server.  */ public static string performget(string ref) {     string returnref = null;     try {         url url = new url(server_url + "/" + ref);         httpurlconnection con = (httpurlconnection) url.openconnection();         con.setrequestmethod("get");          bufferedreader reader = new bufferedreader(new inputstreamreader(con.getinputstream()));          stringbuilder builder = new stringbuilder();         string line;         while ((line = reader.readline()) != null) {             builder.append(line);         }          returnref = builder.tostring();      } catch (ioexception e) {         e.printstacktrace();     }     return returnref; }

when request url, return http code 404 mean not found. if have control php script, set header 200 indicate file found.

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