http-status-code-404

I have the following code: HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.Method = "HEAD"; request.Credentials = MyCredentialCache; try { request.GetResponse(); } catch { } How can I catch a specific 404 error? The WebExceptionStatus.ProtocolError can only detect that an error occurred, but not give the exact code of the error. For example: catch (WebException ex) { if (ex.Status != WebExceptionStatus.ProtocolError) { throw ex; } } Is just not useful enough... the protocol exception could be 401, 503, 403, anything really. Use the HttpStatusCode Enumeration ,

I integrated Tomcat 7 in Eclipse. When I start it using Eclipse, it shows that Tomcat is up and running, but when I go to http://localhost:8080 in my browser, it gives me following error: HTTP Status 404 - / type Status report message / description The requested resource (/) is not available. Apache Tomcat/7.0.23 I tried changing the port in server.xml just in case if 8080 is used by another service, but it didn't work either. How can I solve it? What are you expecting? The default Tomcat homepage? If so, you'll need to configure Eclipse to take control over from Tomcat. Doubleclick the Tomcat

This question already has an answer here: Tomcat started in Eclipse but unable to connect to http://localhost:8085/ 6 answers I set up my server in eclipse and when I run it the console prints: mai 02, 2013 4:05:13 PM org.apache.catalina.core.AprLifecycleListener init INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre7\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;c:\Program Files (x86)\Microsoft

I read that the AppError class is now for backwards compatibility and that Exceptions should be used instead. How does one go about creating custom error pages for things like 404 errors, or completely custom errors? Try this: /app/Config/core.php Exception render need to set as an AppExceptionRender . Example: Configure::write('Exception', array( 'handler' => 'ErrorHandler::handleException', 'renderer' => 'AppExceptionRenderer', 'log' => true )); /app/Controller/ErrorsController.php class ErrorsController extends AppController { public $name = 'Errors'; public function beforeFilter() { parent

String urlString = "http://www.nbc.com/Heroes/novels/downloads/Heroes_novel_001.pdf"; URL url = new URL(urlString); if(/* Url does not return 404 */) { System.out.println("exists"); } else { System.out.println("does not exists"); } urlString = "http://www.nbc.com/Heroes/novels/downloads/Heroes_novel_190.pdf"; url = new URL(urlString); if(/* Url does not return 404 */) { System.out.println("exists"); } else { System.out.println("does not exists"); } This should print exists does not exists TEST public static String URL = "http://www.nbc.com/Heroes/novels/downloads/"; public static int

Is it possible to create a final route that catches all .. and bounces the user to a 404 view in ASP.NET MVC? NOTE: I don't want to set this up in my IIS settings. Found the answer myself. Richard Dingwall has an excellent post going through various strategies. I particularly like the FilterAttribute solution. I'm not a fan of throwing exceptions around willy nilly, so i'll see if i can improve on that :) For the global.asax, just add this code as your last route to register: routes.MapRoute( "404-PageNotFound", "{*url}", new { controller = "StaticContent", action = "PageNotFound" } );

I'm using javascript to pass a dynamic url to iframe src. but sometimes the url does not exist, how could i detect the non-exist url beforehand, so that i can hide the iframe that with 404 error. GPrimola Due to my low reputation I couldn't comment on Derek 朕會功夫's answer. I've tried that code as it is and it didn't work well. There are three issues on Derek 朕會功夫's code. The first is that the time to async send the request and change its property 'status' is slower than to execute the next expression - if(request.status === "404"). So the request.status will eventually, due to internet band,