Sending an email when an exception occurs.

[alialikhan]

Hi,
I have a scenario that any exception thrown by the bean configured in the application context should be caught and an email should be send containing the stack trace.

[Miki.Gevirtz]

You can intercept the exception with AOP .

[uenluena]

That should be quiet easy to accomplish. Following is an example demonstrating the usage. This example works as long as you have a naming convention, where your service beans in the configuration are ending with "Services". The email adress is retrieved from a JNDI service in websphere. You can easily just subtitute that with a hardcoded value in the configuration.

spring configuration

	<!-- This bean can be activated for AOP based RuntimException interceptor -->
	<bean name="runtimeExceptionInterceptor"
		class="ch.xxx.xnet.fwk.common.interceptor.RuntimeExceptionInterceptor">
		<property name="mailer">
			<ref bean="commonMailer" />
		</property>
				 <property name="toEmail">
			<bean class="org.springframework.jndi.JndiObjectFactoryBean">
				<property name="jndiName"> 
					<value>FWK_EXCEPTION_EMAIL</value>
				</property>
			</bean>
		</property>
	</bean>


	<bean
		class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
		<property name="beanNames">
			<value>*Service</value>
		</property>
		<property name="interceptorNames">
			<list>
				<value>runtimeExceptionInterceptor</value>
			</list>
		</property>
	</bean>

and the RuntimeExceptionInterceptor class looks like:

package ch.generali.xnet.fwk.common.interceptor;

import java.io.PrintWriter;
import java.io.StringWriter;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

import ch.generali.xxxx.fwk.common.logging.ILogger;
import ch.generali.xxx.fwk.common.logging.LoggerImpl;
import ch.generali.xxx.fwk.exception.DataBaseBusinessException;
import ch.generali.xxx.fwk.mail.service.ICommonMailer;

public class RuntimeExceptionInterceptor implements MethodInterceptor {
    private static final ILogger  LOG = new LoggerImpl(RuntimeExceptionInterceptor.class);
    private ICommonMailer mailer;
    private String toEmail;

    public void setToEmail(String toEmail) {
        this.toEmail = toEmail;
    }


    public Object invoke(MethodInvocation methodInvocation) throws Throwable {
        
        try {
            result = methodInvocation.proceed();
        } catch (RuntimeException e) {
            // send an email
        }
        return result;
    }
    

    public void setMailer(ICommonMailer mailer) {
        this.mailer = mailer;
    }

    
    
}