import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
@Interceptor
public class LoggingInterceptor {
@AroundInvoke
public Object logMethod(InvocationContext context) throws Exception {
System.out.println("Before method execution: " + context.getMethod().getName());
try {
Object result = context.proceed();
System.out.println("After method execution: " + context.getMethod().getName());
return result;
} catch (Exception e) {
System.out.println("Exception thrown: " + e.getMessage());
throw e;
}
}
}
public class UserService {
@LoggingInterceptor
public void createUser(String username) {
System.out.println("Creating user: " + username);
}
}
<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_2_1.xsd">
<interceptors>
<class>com.example.LoggingInterceptor</class>
</interceptors>
</beans>
