Question

我想创建自定义注释，并使用HttpServletRequest对象将该注释放在方法级别上。到目前为止我做到了这一点：

创建注释

@Target(value={ElementType.METHOD,ElementType.PARAMETER})
@Retention(value=RetentionPolicy.RUNTIME)
@Documented
@Inherited
@Mapping
public @interface CheckSession{
    boolean isAuthenticate() default false;
}

创建了处理程序类

@Component
public class CheckSessionClass implements HandlerMethodReturnValueHandler,HandlerMethodArgumentResolver {




    @Override
    public Object resolveArgument(MethodParameter arg0,
            ModelAndViewContainer arg1, NativeWebRequest arg2,
            WebDataBinderFactory arg3) throws Exception {
        logger.info("......MY ANNOTATION CALLEDD.....resolveArgument");
        return null;
    }


    @Override
    public boolean supportsParameter(MethodParameter arg0) {
        logger.info("......MY ANNOTATION CALLEDD.....supportsParameter");
        return false;
    }


    @Override
    public void handleReturnValue(Object retutnValue, MethodParameter returnType,
            ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {
        CheckSession annotation;
        annotation=returnType.getMethodAnnotation(CheckSession.class);
        if(annotation.isAuthenticate()){
logger.info("......got request is aurhenticated..true");
        }else{
            logger.info("......got request is aurhenticated..false");
        }
    }


    @Override
    public boolean supportsReturnType(MethodParameter arg0) {
        logger.info("......MY ANNOTAION CALLEDD.....supportsReturnType");
        return false;
    }

}

创建了一个控制器来调用这样的注释。

@Controller
public class MyController 
{
@RequestMapping(method={RequestMethod.GET, RequestMethod.POST})
@CheckSession(isAuthenticate=true)
    public ResponseEntity<String> mymethod (HttpServletRequest request)
    {
            ///my code here....
        }
}

我的applicationContext.xml文件被配置为自动组件扫描，但我的注释类仍未被调用。任何人都让我知道我的错误。

Answer 1

您仍然需要在应用程序上下文中配置拦截器（尽管有自动扫描）：

<bean id="checkSession" class="CheckSessionClass"/>

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
    <property name="defaultHandler">
        <ref bean="checkSession"/>
    </property>
</bean>

在spring mvc中创建自定义注释并获取httpservletrequest对象

1 个答案: