Problem with exception resolver and view errors

[tdhaayushverma]

Hello Spring Users.

I am having trouble with viewing error logs when I have a exception resolver set in my *-servlet.xml

Here is my exception resolver.


<!-- Exception Resolver -->
<bean id="exceptionResolver"
class="org.springframework.web.servlet.handler.Sim pleMappingExceptionResolver">
<property name="exceptionMappings">
<props>
<!-- The value of the property will get resolved by the view resolver to display the error page -->
<prop key="java.lang.Exception">Error</prop>
</props>
</property>
</bean>


Example situation :
Here is a method in my controller

public ModelAndView handleRemoveReusableUrl(HttpServletRequest request,
HttpServletResponse response) throws ServletException {


ModelAndView mav = new ModelAndView("redirectollUrls.htm");


service.save();


return mav;
}


in this method, the save() throws a DB exception say a DataAccessException.
Now I dont want to catch the exception here and I want to show the error page , as defined in the Exception handller. But I also want to error stack trace to be available in the logs.

How can I achieve this so thatI can see error message and do the necessary debugging.


Thanks
Aayush.

[gnandiga]

on the jsp page tou can use:

<div class="error">
        <c:forEach items="${exception.stackTrace}" var="stack">
            <c:out value="${stack}" /><br/>
        </c:forEach>
</div>

exception is an object available on the modelAndView.

[tdhaayushverma]

Thanks for the reply,

The method you suggested will display the error stack trace on the jsp error page.
But I am looking to log the error in a log file.
Does that mean I have to catch the error , log it and rethrow it.

Something like:
public ModelAndView handleRemoveReusableUrl(HttpServletRequest request,
HttpServletResponse response) throws ServletException {


ModelAndView mav = new ModelAndView("redirectollUrls.htm");

try{
service.save();
}catch(DataAccessException dae){
logger.error("Error occured during save");
dae.printstacktrace();

throw new Exception();
}

return mav;
}

[gnandiga]

No.

On the jsp if you use the following code, it will log the error for you.

<%
final org.apache.commons.logging.Log log = org.apache.commons.logging.LogFactory.getLog(getClass());
log.error(request.getAttribute("exception"));
%>

[tdhaayushverma]

Great that solves my problem.
Thank you.