Error-page Exception-type Java.lang.exception /exception-type
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Servlets - Life Cycle Servlets - Examples Servlets - Form Data Servlets - Client Request Servlets - Server Response Servlets - Http Codes Servlets - Writing Filters web.xml error-page exception-type Servlets - Exceptions Servlets - Cookies Handling Servlets - Session Tracking Servlets
Web.xml Error-page Example
- Database Access Servlets - File Uploading Servlets - Handling Date Servlets - Page Redirect Servlets - servlet exception handling Hits Counter Servlets - Auto Refresh Servlets - Sending Email Servlets - Packaging Servlets - Debugging Servlets - Internationalization Servlet Useful Resources Servlets - Questions and Answers Servlets - Quick error page jsp Guide Servlets - Useful Resources Servlets - Discussion Selected Reading Developer's Best Practices Questions and Answers Effective Resume Writing HR Interview Questions Computer Glossary Who is Who Servlets - Exception Handling Advertisements Previous Page Next Page When a servlet throws an exception, the web container searches the configurations in web.xml that use the exception-type element for a match
Web.xml Error-page Not Working
with the thrown exception type. You would have to use the error-page element in web.xml to specify the invocation of servlets in response to certain exceptions or HTTP status codes. web.xml Configuration: Consider, you have an ErrorHandler servlet which would be called whenever there is any defined exception or error. Following would be the entry created in web.xml.
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Web.xml Error-page Location
Services Retail/eCommerce Healthcare Software & Technology Government Customers Overview Case Studies Support Partners Overview Technology Partners Resale Partners Company Overview Leadership Threat Research Center http://www.tutorialspoint.com/servlets/servlets-exception-handling.htm In The News Industry Recognition Careers Events Calendar Community Contact Resources Blog Blog BlogWeb Application SecurityError Handling in Java web.xml TRENDING NOW CATEGORIES TRENDING NOW INDUSTRY SOLUTIONSPodcastTHOUGHT LEADERSHIPIndustry ObservationsSECURITY RESEARCHAviatorTechnical InsightTools and ApplicationsTrue Stories of the TRCUnsung HeroesVulnerabilitiesWhiteHat HackerKastWHITEHAT SENTINELEventsWeb Application SecurityWhiteHat Security ProductsTHREAT BULLETINSBreaking News Web Application https://www.whitehatsec.com/blog/error-handling-in-java-web-xml/ Security Error Handling in Java web.xml johnmelton | March 09, 2012 What is it and why should I care? Error or exception handling is an important, but often ignored, part of any application. And although there’s a lot to be said on the topic I’m going to cover only a few of the most critical cases in J2EE Web applications. Essentially, one of the biggest worries about exception handling is that you don’t actually handle the exception. Instead, your code − or the code of some 3rd party library you’re using − allows an exception to bubble up. Once the exception reaches the boundary of your application and enters the container, the specific container/application server you are using determines what semantics are applied in handling the exception. Often times, by default, a standard error page is applied and the exception stack trace
QuestionsJava Interview QuestionsJDBC Interview QuestionsServlet Interview QuestionsJSP Interview QuestionsStruts2 Interview QuestionsSpring Interview QuestionsHibernate Interview QuestionsJSF Interview QuestionsResourcesStoreHome » Java » Java EE » Servlet Exception and Error Handling Example TutorialServlet Exception and http://www.journaldev.com/1973/servlet-exception-and-error-handling-example-tutorial Error Handling Example TutorialJuly 14, 2016 by Pankaj 13 Comments Today we will look into Servlet Exception and Error Handling. Sometime back I wrote a post about Exception Handling in Java but when it comes to web application, we need more than normal exception handling in java.Servlet ExceptionIf you notice, doGet() and doPost() methods web.xml error-page throw javax.servlet.ServletException and IOException, let's see what happens when we throw these exception from our application. I will write a simple servlet that will throw the ServletException. package com.journaldev.servlet.exception; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @WebServlet("/MyExceptionServlet") public class MyExceptionServlet extends HttpServlet { private static final long serialVersionUID = error-page exception-type java.lang.exception 1L; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { throw new ServletException("GET method is not supported."); } } Now when we invoke this servlet through browser with GET method, we get response like below image.Since browser understand only HTML, when our application throw exception, servlet container processes the exception and generate a HTML response. This logic is specific to servlet container. I am using tomcat and getting this error page. If you will use some other servers like JBoss or Glassfish, you might get different error HTML response.The problem with this response is that it's of no value to user. Also it's showing our application classes and server details to user that makes no sense to user and it's not good from security point of view.Servlet ErrorI am sure you must have seen 404 error when you are trying to hit a URL that doesn't exists. Let's see how our servlet container responds to 404 error. If