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 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. ErrorHandlerErrorHandlerErrorHandler/ErrorHandler404/ErrorHandler403/ErrorHandler javax.servlet.ServletException /ErrorHandlerjava.io.I
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Web.xml Error-page Location
the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation exception handling in servlet and jsp Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it http://www.tutorialspoint.com/servlets/servlets-exception-handling.htm only takes a minute: Sign up How to specify the default error page in web.xml? up vote 85 down vote favorite 37 I am using element in web.xml to specify the friendly error page when user encounters a certain error such as error with code of 404: 404/Error404.html However, I want that if the user does http://stackoverflow.com/questions/7066192/how-to-specify-the-default-error-page-in-web-xml not meet any error code specified in , he or she should see a default error page. How can I do that using the element in the web.xml? java servlets tomcat6 web.xml custom-error-pages share|improve this question edited Sep 18 '14 at 14:42 Jayy 1,59521525 asked Aug 15 '11 at 14:34 ipkiss 4,094195895 2 What servletcontainer are you using/targeting and what servlet version is your web.xml declared to? There's only since Servlet 3.0 an easy way. –BalusC Aug 15 '11 at 14:44 I am using Tomcat 6, servlet 2.5 –ipkiss Aug 15 '11 at 14:49 add a comment| 2 Answers 2 active oldest votes up vote 161 down vote accepted On Servlet 3.0 or newer you could just specify /general-error.html But as you're still on Servlet 2.5, there's no other way than specifying every common HTTP error individually. You need to figure which HTTP errors the enduser could possibly face. On a barebones webapp with for example the usage of HTTP authentication, having a disabled directory listing, using custom servlets and
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(Example-1) Life Cycle Events Con.Ini.Par.(Example-2) Lif.Cyc.Evt.(Example-3) Err. & Exce.(Example-4) Filters (Example-5) Servlet Hints Bookmark This Site Handling Errors And Exceptions In Servlets Introduction The two Servlet Exceptions defined in Servlet API are: javax.servlet.ServletException: Defines a servlet exception that a servlet throws while processing the client request. javax.servlet.UnavailableException: Defines a servlet exception that is thrown by a servlet, when a servlet is temporarily or permanently unavailable. Note: Do not try to write to the response buffer after invoking the sendError() method You can write to the response after invoking setStatus() method Example for Handling Errors And Exceptions In Servlets CLICK HERE to download this complete example (zip file) Create a User Interface (Calculator.html)
ONLINE SHOPPING PORTAL Download Calculator.html Create a Servlet import javax.servlet.*; import javax.servlet.http.*; import java.io. *; public class Calculate extends HttpServlet { public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { PrintWriter pw=res.getWriter(); int number1=Integer.parseInt(req.getParameter("num1")); int number2=Integer.parseInt(req.getParameter("num2")); int sum=number1+number2; pw.println("Sum of the numbers is"+sum); } } Download Calculate.java Create a Customized Error Page import javax.servlet.*; import javax.servlet.http.*; import java.io.*; public class ErrorServlet extends HttpServlet { final String EXC = "javax.servlet.error.exception"; final String MSG = "javax.servlet.error.message"; final String ST = "javax.servlet.error.status_code"; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ServletContext sc = getServletContext(); PrintWriter pw = response.getWriter(); Exception exc = (Exception)request.getAttribute(EXC); Integer st_cd = (Integer)request.getAttribute(ST); String msg = (String)request.getAttribute(MSG); pw.println(""); pw.println(""); pw.println(""); pw.println("
Sorry, an error has occurred that has prevented the server from servicing your request.
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