Error Handling In Jsp Servlet
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of experience with this. Any advice? I'm trying to make the app for robust.. java jsp servlets share|improve this question asked May 31 '11 at 3:37 Damian Wells 48115 A related question that gives an example of handling exceptions in a filter, which is another option in addition to the answer below (that question is in the context of Spring but still applies). –Jason C Aug 30 at 14:31 add a comment| 4 Answers 4 active oldest votes up vote 16 down vote accepted The standard thing to do is have your Servlet's doXxx() method (eg. doGet(), doPost(), etc.) throw a ServletException and allow the container to catch and handle it. You can specify a custom error page to be shown in WEB-INF/web.xml using the
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either inside the page or outside the page (such as in a called JavaBean). This section describes the JSP error processing mechanism and provides a simple example. Using JSP Error Pages Any runtime error encountered during execution of a JSP page is handled using the standard Java exception mechanism in one of two ways: You can catch and handle exceptions in a Java scriptlet within the JSP page itself, using standard Java exception-handling code. Exceptions you do not catch in the JSP page will result in forwarding of the request and uncaught exception to an error page. This is the preferred way to handle JSP errors. You can specify the URL of an error page by setting the errorPage parameter in a page directive in the originating JSP page. (For an overview of JSP directives, including the page directive, see "Directives". ) In a servlet 2.2 environment, you can also specify a default error page in the web.xml deployment descriptor with instructions such as the following: