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Spring MVC Framework Exception Handling (How to create and handle application specific Exception created like MyAppException extends Exception)

Posted on 2008-06-17
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Last Modified: 2013-11-24
I am using spring mvc framework. I want to handle my own created Exception (MyException) that extends with java Exception class. What is the best way to handle both application specific Exceptions and any java related exceptions.

Thanks,
Shakil


In my Manager class(i am using DAO and DTO both patterns) i am showing method as below.

public List<TarTrackingResultsDTO> loadTarInfo(long _startingTar,

            String _stateCode) throws AFMException;

 

I want to handle this in controller but there may arise java.lang.Exception related exceptions.

Please give me a peace of code also.

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Question by:Shakil_Akhtar
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5 Comments
 
LVL 35

Expert Comment

by:girionis
ID: 21816060
I think the best you can do is to catch both exceptions so you do specific things when each one of them is caught:


try

{

   // logic

}

catch (YourException e)

{

    ...

}

catch (Exception ex)

{

    ...

}

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Accepted Solution

by:
girionis earned 125 total points
ID: 21816091
So, if you apply my example above to your code it should be something like



try

{

    loadTarInfo(...);

}

catch (AFMException afm)

{

...

}

catch (Exception e)

{

...

}

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Author Comment

by:Shakil_Akhtar
ID: 21819007
I am doing same as you have given in my example.you haven't given application-servlet.xml entries. should not  give message from super class to which AFMException is derived.like below
try
{
    loadTarInfo(...);
}
catch (AFMException afm)
{
throw new AFMException ("message ");
}
catch (Exception e)
{
...logger.error(" Exception in cotroller");
}
Please give me your comment for confirmation ASAP
0
 
LVL 35

Expert Comment

by:girionis
ID: 21820204
> you haven't given application-servlet.xml entries.

You do not need to declare your exception in xml descriptors.

> Please give me your comment for confirmation ASAP

This should work. But if you are just catching and rethrowing the same exception you might as well declare it in th ethrows clause of your method




public void myMethod() throws AFMException

{

    loadTarInfo(...);

    ...

}

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Author Comment

by:Shakil_Akhtar
ID: 21843368
I am giving u my application-servlet.xml entries  and please respond me ASAP. I want to display two different page. one for afm exception and other for any java.lang.Exception . AFMExceptions are those that is comming from database (like if record unmatch) etc.

<bean id="exceptionResolver" class="com.fareis.afm.common.controller.ExceptionHandler">

<property name="exceptionMappings">

 <props>

<prop key="com.fareis.afm.common.exception.AFMException">afmException</prop>

		<prop key="java.lang.Exception">error</prop> 			</props>

		</property>

	</bean>

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