我可以在Spring中使用GET方法获取所有requestMapping URL吗？ [英] Can I get all of requestMapping URL with GET method in the Spring?

问题描述

我想动态地创建一个sitemap.xml文件。
如果我需要在控制器中获得所有的url地址，
我该如何解决这类问题？

我想要的做的是用spring生成sitemap.xml。

sitemap.xml具有搜索引擎在我的网站
上爬行的所有url，这就是为什么我需要这个解决方案。

解决方案

以下代码从类型中提取所有 RequestMappingInfo 和方法级别 @RequestMapping @Controller 类中的注释。

  // context = ApplicationContext 
 Map< String，RequestMappingHandlerMapping> matchingBeans = BeanFactoryUtils.beansOfTypeIncludingAncestors（context，
 RequestMappingHandlerMapping.class，true，false）; 
 
 if（！matchingBeans.isEmpty（））{
 ArrayList< HandlerMapping> handlerMappings = new ArrayList< HandlerMapping>（matchingBeans.values（））; 
 AnnotationAwareOrderComparator.sort（handlerMappings）; 
 
 RequestMappingHandlerMapping mappings = matchingBeans.get（requestMappingHandlerMapping）; 
 Map< RequestMappingInfo，HandlerMethod> handlerMethods = mappings.getHandlerMethods（）; （RequestMappingInfo requestMappingInfo：handlerMethods.keySet（））{
 RequestMethodsRequestCondition methods = requestMappingInfo.getMethodsCondition（）; 
 
。 
 
 //使用
获得所有的requestMappingInfos // 1）默认的request-method（这是none）
 // 2）或method = GET 
 if .getMethods（）。isEmpty（）|| methods.getMethods（）。contains（RequestMethod.GET））{
 System.out.println（requestMappingInfo.getPatternsCondition（）。getPatterns（）+ - >产生 + 
 requestMappingInfo.getProducesCondition（））; 
} 
} 
} 
  

您可能需要过滤掉映射错误页面。
RequestMappingInfo 对象包含您通过 @RequestMapping 注释定义的所有相关映射信息，例如：

• RequestMappingInfo.getMethods（） - > @RequestMapping方法= RequestMethod.GET）


• RequestMappingInfo.getPatternsCondition（）。getPatterns（） - > @RequestMapping（value =/ foo）


• 等等。欲了解更多详情，请参阅 RequestMappingInfo

---

为了进一步抓住例如。 ViewController 配置，您需要过滤 SimpleUrlHandlerMapping 类型：

  Map< String，SimpleUrlHandlerMapping> matchingUrlHandlerMappingBeans = BeanFactoryUtils.beansOfTypeIncludingAncestors（context，
 SimpleUrlHandlerMapping.class，true，false）; 
 SimpleUrlHandlerMapping mappings = matchingUrlHandlerMappingBeans.get（viewControllerHandlerMapping）; 
 System.out.println（mappings.getUrlMap（））; 
  

I want to make a sitemap.xml file dynamically. If then I need to get all of url address in the controller, How can I resolve this kinds of thing?

All I want to do is to generate sitemap.xml with spring.

The sitemap.xml have all the url that a search engine should crawl on my site and that's why I need this solution.

解决方案

Following code extracts all RequestMappingInfo instances from type and method-level @RequestMapping annotations in @Controller classes.

// context = ApplicationContext
Map<String, RequestMappingHandlerMapping> matchingBeans = BeanFactoryUtils.beansOfTypeIncludingAncestors(context,
    RequestMappingHandlerMapping.class, true, false);

if (!matchingBeans.isEmpty()) {
    ArrayList<HandlerMapping> handlerMappings = new ArrayList<HandlerMapping>(matchingBeans.values());
    AnnotationAwareOrderComparator.sort(handlerMappings);

    RequestMappingHandlerMapping mappings = matchingBeans.get("requestMappingHandlerMapping");
    Map<RequestMappingInfo, HandlerMethod> handlerMethods = mappings.getHandlerMethods();

    for (RequestMappingInfo requestMappingInfo : handlerMethods.keySet()) {
        RequestMethodsRequestCondition methods = requestMappingInfo.getMethodsCondition();

        // Get all requestMappingInfos with 
        //  1) default request-method (which is none) 
        //  2) or method=GET
        if (methods.getMethods().isEmpty() || methods.getMethods().contains(RequestMethod.GET)) {
            System.out.println(requestMappingInfo.getPatternsCondition().getPatterns() + " -> produces " +
                    requestMappingInfo.getProducesCondition());
        }
    }
}

You probably need to filter out mappings for the error-pages. The RequestMappingInfo object contains all the relevant mapping information that you define over @RequestMapping annotations such as:

• RequestMappingInfo.getMethods() -> @RequestMapping(method=RequestMethod.GET)
• RequestMappingInfo.getPatternsCondition().getPatterns() -> @RequestMapping(value = "/foo")
• etc. for more details see RequestMappingInfo

---

To further catch eg. ViewController configurations as well, you need to filter for the SimpleUrlHandlerMapping type:

Map<String, SimpleUrlHandlerMapping> matchingUrlHandlerMappingBeans = BeanFactoryUtils.beansOfTypeIncludingAncestors(context,
            SimpleUrlHandlerMapping.class, true, false);
SimpleUrlHandlerMapping mappings = matchingUrlHandlerMappingBeans.get("viewControllerHandlerMapping");
System.out.println(mappings.getUrlMap());

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