Question

首先，我对RequestMappingHandlerMapping执行一次覆盖，如下所示

public class RestAnnotationHandler extends RequestMappingHandlerMapping{
     Logger logger = LoggerFactory.getLogger(getClass());

@Override
protected RequestMappingInfo getMappingForMethod(Method method, Class<?> handlerType) {
      RequestMappingInfo info = null;

List<RequestMethod> requestMethod = new ArrayList<>(RequestMethod.values().length);
String[] value = null;
if(method.isAnnotationPresent(Post.class)){
    Post postAnnotation = AnnotationUtils.findAnnotation(method, Post.class);
    requestMethod.add(RequestMethod.POST);
    value = postAnnotation.value();
}else if(method.isAnnotationPresent(Get.class)){
    Get getAnnotation = AnnotationUtils.findAnnotation(method, Get.class);
    requestMethod.add(RequestMethod.GET);
    value = getAnnotation.value();
}else if(method.isAnnotationPresent(Put.class)){
    Put putAnnotation = AnnotationUtils.findAnnotation(method, Put.class);
    requestMethod.add(RequestMethod.PUT);
    value = putAnnotation.value();
}else if(method.isAnnotationPresent(Delete.class)){
    Delete deleteAnnotation = AnnotationUtils.findAnnotation(method, Delete.class);
    requestMethod.add(RequestMethod.DELETE);
    value = deleteAnnotation.value();
}else if(method.isAnnotationPresent(RequestMapping.class)){
    RequestMapping annotation = AnnotationUtils.findAnnotation(method, RequestMapping.class);
    requestMethod.addAll(Arrays.asList((annotation.method()!=null && annotation.method().length>0)?annotation.method():RequestMethod.values()));
    value = annotation.value();
}

final String[] requestMappingValue = value;
if(requestMethod.size() > 0){
    final RequestMethod[] requestMappingRequestMethod = requestMethod.toArray(new RequestMethod[requestMethod.size()]);
    logger.info("Open a web rest annotation: {} and method {}!", requestMappingValue, requestMappingRequestMethod.toString());
    RequestMapping methodAnnotation  = new RequestMapping() {
        @Override
        public Class<? extends Annotation> annotationType() {
            return RequestMapping.class;
        }

        @Override
        public String name() {
            return "";
        }

        @Override
        public String[] value() {
            return requestMappingValue;
        }

        @Override
        public String[] produces() {
            return new String[]{};
        }

        @Override
        public String[] params() {
            return new String[]{};
        }

        @Override
        public RequestMethod[] method() {
            return requestMappingRequestMethod;
        }

        @Override
        public String[] headers() {
            return new String[]{};
        }

        @Override
        public String[] consumes() {
            return new String[]{};
        }

        @Override
        public String[] path() {
            return requestMappingValue;
        }
    };

    RequestCondition<?> methodCondition = getCustomMethodCondition(method);
    info = createRequestMappingInfo(methodAnnotation, methodCondition);
    RequestMapping typeAnnotation = AnnotationUtils.findAnnotation(handlerType, RequestMapping.class);
    if (typeAnnotation != null) {
        RequestCondition<?> typeCondition = getCustomTypeCondition(handlerType);
        info = createRequestMappingInfo(typeAnnotation, typeCondition).combine(info);
     }
   }
  return info;
}

}

然后我在org.springframework.web.context.ContextLoaderListener加载的spring context.xml中配置它，所以这个bean将在root WebApplicationContext中。
```
<bean id="RequestMappingHandlerMapping" class="com.hisoka.handler.RestAnnotationHandler"/>
```

现在我们可以使用my rest Annotation来注释一个控制方法，我可以在浏览器上访问该方法。

@Documented
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Get {

   String[] value() default{};

}

@Get("/")
@ResponseBody
public ModelAndView index() {
   Map<String, Object> result = new HashMap<String, Object>();
   result.put("name", "Hinsteny");
   return new ModelAndView("home").addObject("name", "Hinsteny Hisoka");
}

但是当我配置DefaultServletHttpRequestHandler处理静态资源时，我自己休息Annotation无法正常工作
```
<mvc:default-servlet-handler/>
```

问题：如何使我的休息Annotation和DefaultServletHttpRequestHandler在springmv中一起工作？请帮帮我

如何在springMVC的RequestMappingHandlerMapping中覆盖getMappingForMethod方法

0 个答案: