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About Byron Kiourtzoglou

Byron Kiourtzoglou
Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.

Create an error page for JSP pages

This is an example of how to create an error page in JSP pages. JavaServer Pages (JSP) is a server-side programming technology that enables the creation of dynamic, platform-independent method for building Web-based applications. Creating an error page implies that you should:

  • Create a jsp page. Inside the <%code fragment%> scriptlet define the java code to be executed.
  • Add any comments in the page inside the <%-- ... --%> tags.
  • Then create the error page with a message in the <%code fragment%> scriptlet. Declare the page as error page using the <%@ page ... %> directive.

PageWithError.jsp

<%@ page errorPage="errorpage.jsp" %>
<%-- NullPointerException if the parameter param does not exist --%>
<%= request.getParameter("param").toString() %>

errorpage.jsp

		
<%@ page isErrorPage="true" %>

An error has occurred. The Exception was: <%= exception %>

URL:

http://myhost:8080/jcgsnippets/PageWithError.jsp

Output:

An error has occurred. The Exception was: java.lang.NullPointerException

  
This was an example of how to create an error page for JSP pages.

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