Spring MVC with AspectJ

问题:

I have a working spring mvc project. I want to log each request through my controllers with using AspectJ. The relevant code:

The Controller: (in package hu.freetime.controller)

@Controller @RequestMapping("/") public class BaseControllerImpl {     @RequestMapping(method = RequestMethod.GET)     public String index(Model model) {         return "index";     } } 

The Aspect:

@Aspect public class ControllerAspectImpl {     Logger logger = LoggerFactory.getLogger(ControllerAspectImpl.class);      @Pointcut("execution(public * hu.freetime.controller.BaseControllerImpl.*(..))")     public void logController() {     }       @Around("logController()")     public void log(final ProceedingJoinPoint pjp) {         MethodSignature signature = (MethodSignature) pjp.getSignature();         Method method = signature.getMethod();         logger.info("Calling Controller method: " + method.getName() + "()");         try {             pjp.proceed();         } catch (Throwable e) {             e.printStackTrace();         }     } } 

The WebAppInitializer:

public class CashflowWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {      @Override     protected Class<?>[] getRootConfigClasses() {         return new Class<?>[] { RootConfig.class };     }      @Override     protected Class<?>[] getServletConfigClasses() {         return new Class<?>[] { WebConfig.class };     }      @Override     protected String[] getServletMappings() {         return new String[] { "/" };     } } 

The WebConfig class:

@Configuration @EnableWebMvc @EnableAspectJAutoProxy @ComponentScan(basePackages = { "hu.freetime.controller", "hu.freetime.aspect" }) public class WebConfig extends WebMvcConfigurerAdapter {      @Bean     public ViewResolver viewResolver() {         InternalResourceViewResolver resolver = new InternalResourceViewResolver();         resolver.setPrefix("/WEB-INF/views/");         resolver.setSuffix(".jsp");         resolver.setExposeContextBeansAsAttributes(true);         return resolver;     }      @Bean     public ControllerAspectImpl getControllerAspect() {         return new ControllerAspectImpl();     }      @Override     public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {         configurer.enable();     } } 

The problem is, that only one of the two components is working. If I "turn off" the AOP, the MVC works perfect, but when i "turn on", and I want to go to the main page, I get this error:

HTTP Status 404 - .../WEB-INF/views/.jsp The requested resource is not available. 

The strange thing is that it wants to map the ".jsp" instead of "index.jsp", as I wrote in the Controller's index() method. I debugged at runtime, and it did stop at the controller method.

How can I make it work?

回答1:

Your around advice does not return the result of pjp.proceed(). That is the return value of the advised method and must be returned by the advice! Otherwise you are turning the advised method into a void as well.

public **Object** log(final ProceedingJoinPoint pjp) { ...     try {         **return** pjp.proceed(); <<< !     } catch (Throwable e) {         e.printStackTrace();     }     } 

回答2:

Use below code it will work

@Pointcut("execution(public * hu.freetime.*(..))") 

文章来源: Spring MVC with AspectJ