Java 拦截器未被调用

Question

我有一个 Spring 引导应用程序，我正在实施拦截器以记录一些数据。问题是没有被调用，我试过了：

@Interceptor
public class LoggerInterceptor{

    @AroundInvoke
    public Object collectBasicLoggingInformation(InvocationContext context) throws Exception {
        Logger logger = LoggerFactory.getLogger(context.getClass());
        logger.info("Method Called: " + context.getMethod()
                .getName());
        logger.info("Parameters: " + Arrays.toString(context.getParameters()));
        return context.proceed();
    }
}

然后我应用了方法或类但它们都不起作用：

@GetMapping
@Interceptors(LoggerInterceptor.class)
public List getAllFilingNumber(){
    logger.info("This is a test");
    return filingNumberService.findAll();
}

或者

@RestController
@RequestMapping(FilingNumberController.BASE_URL)
@Interceptors(LoggerInterceptor.class)
public class FilingNumberController{

    @GetMapping
    public List getAllFilingNumber(){
        logger.info("This is a test");
        return filingNumberService.findAll();
    }
}

有人知道我做错了什么吗？

谢谢

Answer 1

如果您有一个spring引导应用程序以便拦截对控制器的请求，您必须采取不同的方法一共

Interceptors are used in conjunction with Java EE managed classes to allow developers to invoke interceptor methods on an associated target class, in conjunction with method invocations or lifecycle events. Common uses of interceptors are logging, auditing, and profiling. Reference Doc

您正在尝试将 Java EE 注释与 spring 一起使用，这不会 work.In spring-boot 您必须 注册拦截器喜欢 :

@Configuration
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LocaleChangeInterceptor());
        registry.addInterceptor(new ThemeChangeInterceptor()).addPathPatterns("/**").excludePathPatterns("/admin/**");
        registry.addInterceptor(new SecurityInterceptor()).addPathPatterns("/secure/*");
    }
}

拦截器本身必须是 class，它扩展了 HandlerInterceptorAdapter 并实现了如下方法。来自 Spring DOCS :

All HandlerMapping implementations support handler interceptors that are useful when you want to apply specific functionality to certain requests — for example, checking for a principal. Interceptors must implement HandlerInterceptor from the org.springframework.web.servlet package with three methods that should provide enough flexibility to do all kinds of pre-processing and post-processing:
preHandle(..): Before the actual handler is executed

postHandle(..): After the handler is executed

afterCompletion(..): After the complete request has finished

@Component
public class RequestInterceptor extends HandlerInterceptorAdapter {

 @Override
 public boolean preHandle(HttpServletRequest request, 
        HttpServletResponse response, Object object) throws Exception {
    System.out.println("we are Intercepting the Request");
    return true;
 }

 @Override
 public void postHandle(HttpServletRequest request, HttpServletResponse response, 
        Object object, ModelAndView model)
        throws Exception {
    System.out.println("request processing "
            + "completed by @RestController");

 }

 @Override
 public void afterCompletion(HttpServletRequest request, HttpServletResponse response, 
        Object object, Exception arg3)
        throws Exception {
    System.out.println("afterCompletion Request Completed");
 }
}

Java 拦截器未被调用

Java interceptor not getting called

java

spring

interceptor

spring-boot