Unchecked Exception

843810

How can I get all of the exceptions Thrown in a java Application?
I Was trying creating a general method called from all the try-catch statemets that can save my program Exceptions, but then I think about the unchecked exception.

800387

There is a very easy way to do this: aspect-oriented programming. Here is a sample aspect that will catch any exception that makes it to the service tier whether checked or unchecked that is thrown or not caught:

@Aspect
@Component 

public class ErrorHandlingAspect implements Ordered 
{
    /**
     * Around advice to ensure that errors are handled in a consistent fashion and output
     * in the logs identically for all service methods.  
     * 
     * @param   pjp                         Join point
     * @return  Object                      Invocation result
     * @throws  Throwable
     */
    
    @Around(AopPointcuts.POINTCUT_SERVICE_METHOD)

    public Object invokeAround(final ProceedingJoinPoint pjp) 
        throws Throwable 
    {
        try 
        {
            return pjp.proceed();
        }
        catch (Exception e) 
        {
            throw ErrorHandler.handleException(e);
        }
        catch (Error e) 
        {
            ErrorHandler.handleException(e);
            throw e;
        }
    }

This particular aspect uses Spring AOP. However, that is basically a sub-set of AspectJ. You do a Google to find out how these work. With AOP, you only write one class, and the aspect ensures that any errors are handled by ErrorHandler, which is a custom class that we use to simply log the error appropriately.

- Saish

843810

Thanks for the help i will look for the spring aop to see how it looks.

800387

You are welcome.

If you are not already using Spring, I highly recommend it. If you choose not to use Spring as a whole, then Spring AOP will obviously not be an option. Use full-blown AspectJ instead.

Best of luck.

- Saish

jschellSomeoneStoleMyAlias

XxdennixX wrote:
How can I get all of the exceptions Thrown in a java Application?
I Was trying creating a general method called from all the try-catch statemets that can save my program Exceptions, but then I think about the unchecked exception.

catch(Throwable)