Spring MVC注册mapping

查询mapping是否存在

@Autowired
private RequestMappingHandlerMapping requestMappingHandlerMapping;

public RequestMappingInfo getRequestMappingInfo(String pattern, String method) {
        Map<RequestMappingInfo, HandlerMethod> map = requestMappingHandlerMapping.getHandlerMethods();
        for (RequestMappingInfo info : map.keySet()) {
            Set<String> patterns = MappingInfoUtils.getPatterns(info);
            Set<RequestMethod> methods = info.getMethodsCondition().getMethods();
            if (patterns.contains(pattern) && (methods.isEmpty() || methods.contains(RequestMethod.valueOf(method)))){
                return info;
            }
        }
        return null;
} 

/**
     * 注册mapping
     *
     * @param apiInfo
     */
    public synchronized void registerMappingForApiInfo(ApiInfo apiInfo) throws NoSuchMethodException {
        if (ApiType.Code.name().equals(apiInfo.getType())) {
            return;
        }

        String pattern = apiInfo.getFullPath();


        RequestMappingInfo mappingInfo = getRequestMappingInfo(pattern,apiInfo.getMethod());
        if (mappingInfo != null){
            return;
        }

        log.debug("Mapped [{}]{}", apiInfo.getMethod(), pattern);
        mappingInfo = RequestMappingInfo.paths(pattern)
                .methods(RequestMethod.valueOf(apiInfo.getMethod()))
                .options(this.config)
                .build();
        Method targetMethod = QLRequestMappingFactory.class.getDeclaredMethod("execute", Map.class, Map.class, HttpServletRequest.class, HttpServletResponse.class);
        requestMappingHandlerMapping.registerMapping(mappingInfo, mappingFactory, targetMethod);
    }

• utils

public class MappingInfoUtils {
    public static Set<String> getPatterns(RequestMappingInfo info){
        return info.getPatternsCondition() == null?info.getPathPatternsCondition().getPatternValues():info.getPatternsCondition().getPatterns();
    }
}