关于SpringMVC中WebApplicationContext扫描不到指定Mapping

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场景：虽然controller中写了mapping，但是WebApplicationContext怎么都扫描不到

解决：可以看看SpringMVC配置中，是否将你所在的controller扫描进去了。XML配置如下

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<!-- 把标记了@Controller注解的类转换为bean -->
<context:component-scan base-package="com.hyyt.shopjsp.**.controller"/>

这行配置表示，它扫描com.hyyt.shopjsp类下controller包中

另外附上以JSON形式输出项目方法名称，方法URL和controller名称

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@Autowired
  WebApplicationContext appContext;
  @RequestMapping(value = "/showAllMappingInfo", method = RequestMethod.GET)
  @ResponseBody
  public JSONArray index(HttpServletRequest request)
  {

      //请求url和处理方法的映射
      JSONArray requestToMethodItemJSONArray = new JSONArray();

      //获取所有的RequestMapping
      Map<String, HandlerMapping> allRequestMappings = BeanFactoryUtils.beansOfTypeIncludingAncestors(appContext,
              HandlerMapping.class, true, false);

      for (HandlerMapping handlerMapping : allRequestMappings.values())
      {
          //本项目只需要RequestMappingHandlerMapping中的URL映射
          if (handlerMapping instanceof RequestMappingHandlerMapping)
          {
              RequestMappingHandlerMapping requestMappingHandlerMapping = (RequestMappingHandlerMapping) handlerMapping;
              Map<RequestMappingInfo, HandlerMethod> handlerMethods = requestMappingHandlerMapping.getHandlerMethods();
              for (Map.Entry<RequestMappingInfo, HandlerMethod> requestMappingInfoHandlerMethodEntry : handlerMethods.entrySet())
              {
                  RequestMappingInfo requestMappingInfo = requestMappingInfoHandlerMethodEntry.getKey();
                  HandlerMethod mappingInfoValue = requestMappingInfoHandlerMethodEntry.getValue();

                  RequestMethodsRequestCondition methodCondition = requestMappingInfo.getMethodsCondition();

                  PatternsRequestCondition patternsCondition = requestMappingInfo.getPatternsCondition();
                  String requestUrl = patternsCondition.getPatterns().toString();

                  String controllerName = mappingInfoValue.getBeanType().toString();
                  String requestMethodName = mappingInfoValue.getMethod().getName();
                  Class<?>[] methodParamTypes = mappingInfoValue.getMethod().getParameterTypes();


                  JSONObject jsonObject = new JSONObject();
                  jsonObject.put("requestUrl", requestUrl);
                  jsonObject.put("controllerName", controllerName);
                  jsonObject.put("requestMethodName", requestMethodName);

                  requestToMethodItemJSONArray.add(jsonObject);
              }
              break;
          }
      }
      return requestToMethodItemJSONArray;
  }

返回信息如下

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