I'm trying to show custom error message for 404/403/500 error. I'm able to show 404/403 error but unable to show 500 error. Steps I have followed so far - Step 1: Created a servlet which will set the status as 500 for testing purpose
public class ErrorServlet extends SlingSafeMethodsServlet {
@Override protected void doGet(final SlingHttpServletRequest request, final SlingHttpServletResponse response) throws ServletException, IOException { try{
response.setStatus(500);
} catch (Exception e) { e.printStackTrace(); } } }
Step2: Crated Exception.jsp and Throwable.jsp under apps/sling/servlet/errorhandler
Step3: Added below code in both Exception.jsp and Throwable.jsp
<%@include file="/libs/foundation/global.jsp"%> <%@taglib prefix="sling" uri="http://sling.apache.org/taglibs/sling/1.0" %><% %><sling:defineObjects /><% response.setStatus(500); request.getRequestDispatcher("/content/myproject/en_US/ errorpages/errorpage500.html").forward(request,response); %>
Now when I hit http://port:host/path/to/servlet then I get "Internal Server Error" in the browser. It does not send to the expected custom error page which I mentioned. Kindly let me know what I'm missing here.
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You are just setting the 500 status, which is not picked by your error handler(which is wrongly implemented of course) , actually the sling "default" error handler kicks in and sends the "Internal Server Error".
you have two options:
// 1.
A 500.jsp script can be created. However, it is only used if HttpServletResponse.sendError(500) is executed explicitly; i.e. from an exception catcher.
Otherwise, the response code is set to 500, but the 500.jsp script is not executed..
You are not doing this in your servlet code.
// 2.
Update you error servlet as given below.
/** * Generic Error Handler Servlet that handles all the uncaught exceptions thrown by application code. * * @author Rakesh.Kumar * */ @Component(immediate = true) @SlingServlet(description = "Generic Error Handler Servlet that handles all the uncaught exceptions thrown by application code.", resourceTypes = { "sling/servlet/errorhandler" }, extensions = { "Throwable" }, generateComponent = false) public class ErrorHandlerServlet extends SlingAllMethodsServlet { /** * serialVersionUID for this class. */ private static final long serialVersionUID = -7199024830200774412L; /** * Logger for this class */ private static final Logger LOGGER = LoggerFactory .getLogger(ErrorHandlerServlet.class); /** * Generic Error Handler Servlet that handles all the uncaught exceptions * thrown by application code * * @param request * {@link SlingHttpServletRequest} * @param response * {@link SlingHttpServletResponse} * * @throws ServletException * @throws IOException */ @Override protected void service(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException { LOGGER.debug("Handling the uncaught exception."); Object exception = request.getAttribute(SlingConstants.ERROR_EXCEPTION); if (exception instanceof Exception) { Exception ex = (Exception) exception; String message = (String) request .getAttribute(SlingConstants.ERROR_MESSAGE); Integer statusCode = (Integer) request .getAttribute(SlingConstants.ERROR_STATUS); if (statusCode == null) { statusCode = Integer .valueOf(SlingHttpServletResponse.SC_INTERNAL_SERVER_ERROR); } // Logs the exception and other information. // forward/redirect your request to desired page and before that make sure response is not committed response.isCommitted } } }
Now for all uncaught exceptions(500) your Error handler will be called.
HTH.
~cheers
Rakesh
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You are just setting the 500 status, which is not picked by your error handler(which is wrongly implemented of course) , actually the sling "default" error handler kicks in and sends the "Internal Server Error".
you have two options:
// 1.
A 500.jsp script can be created. However, it is only used if HttpServletResponse.sendError(500) is executed explicitly; i.e. from an exception catcher.
Otherwise, the response code is set to 500, but the 500.jsp script is not executed..
You are not doing this in your servlet code.
// 2.
Update you error servlet as given below.
/** * Generic Error Handler Servlet that handles all the uncaught exceptions thrown by application code. * * @author Rakesh.Kumar * */ @Component(immediate = true) @SlingServlet(description = "Generic Error Handler Servlet that handles all the uncaught exceptions thrown by application code.", resourceTypes = { "sling/servlet/errorhandler" }, extensions = { "Throwable" }, generateComponent = false) public class ErrorHandlerServlet extends SlingAllMethodsServlet { /** * serialVersionUID for this class. */ private static final long serialVersionUID = -7199024830200774412L; /** * Logger for this class */ private static final Logger LOGGER = LoggerFactory .getLogger(ErrorHandlerServlet.class); /** * Generic Error Handler Servlet that handles all the uncaught exceptions * thrown by application code * * @param request * {@link SlingHttpServletRequest} * @param response * {@link SlingHttpServletResponse} * * @throws ServletException * @throws IOException */ @Override protected void service(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException { LOGGER.debug("Handling the uncaught exception."); Object exception = request.getAttribute(SlingConstants.ERROR_EXCEPTION); if (exception instanceof Exception) { Exception ex = (Exception) exception; String message = (String) request .getAttribute(SlingConstants.ERROR_MESSAGE); Integer statusCode = (Integer) request .getAttribute(SlingConstants.ERROR_STATUS); if (statusCode == null) { statusCode = Integer .valueOf(SlingHttpServletResponse.SC_INTERNAL_SERVER_ERROR); } // Logs the exception and other information. // forward/redirect your request to desired page and before that make sure response is not committed response.isCommitted } } }
Now for all uncaught exceptions(500) your Error handler will be called.
HTH.
~cheers
Rakesh
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Please have a look at the " caution " section ..
http://dev.day.com/docs/en/cq/current/developing/customizing_error_handler_pages.html
and then
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overlay default.jsp under /apps/sling/servlet/errorhandler and added above code, after it was fine. also, I used response.sendError(500) for testing. Not sure why Exception.jsp/Throwable.jsp did not work
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