ContextParentAnnotationHandlerMapping.java 文件源码

protected String[] determineUrlsByAnnotations(Object handler) {
    Class<? extends Object> handlerType = handler.getClass();
    RequestMapping mapping = AnnotationUtils.findAnnotation(handlerType, RequestMapping.class);

    if (mapping != null) {
        // @RequestMapping found at type level
        this.cachedMappings.put(handlerType, mapping);
        Set<String> urls = new LinkedHashSet<String>();
        String[] paths = mapping.value();
        if (paths.length > 0) {
            // @RequestMapping specifies paths at type level
            for (String path : paths) {
                addUrlsForPath(urls, path);
            }
            return StringUtils.toStringArray(urls);
        } else {
            // actual paths specified by @RequestMapping at method level
            return determineUrlsForHandlerMethods(handlerType);
        }
    } else if (AnnotationUtils.findAnnotation(handlerType, Controller.class) != null) {
        // @RequestMapping to be introspected at method level
        return determineUrlsForHandlerMethods(handlerType);
    } else {
        return null;
    }
}