import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
@Interceptor
public class ExecutionTimeInterceptor {
@AroundInvoke
public Object logExecutionTime(InvocationContext context) throws Exception {
long startTime = System.nanoTime();
try {
return context.proceed();
} finally {
long endTime = System.nanoTime();
long executionTime = endTime - startTime;
}
}
}
import javax.ejb.Stateless;
import javax.interceptor.Interceptors;
@Stateless
@Interceptors(ExecutionTimeInterceptor.class)
public class MyService {
public void doSomething() {
}
}
