Spring3请求映射:获取路径值
解析Spring3请求映射:获取路径值,spring,spring-mvc,request-mapping,Spring,Spring Mvc,Request Mapping,解析requestMapping@PathVariable值后,是否有方法获取完整的路径值 即: /{id}/{restofurl}应该能够将/1/dir1/dir2/file.html解析为id=1和restofurl=/dir1/dir2/file.html 如果您有任何想法,我们将不胜感激。URL中不匹配的部分将作为名为HandlerMapping的请求属性公开。处理程序映射属性中的路径\u: @RequestMapping("/{id}/**") public void foo(@Pat
requestMapping
@PathVariable
值后,是否有方法获取完整的路径值
即:
/{id}/{restofurl}
应该能够将/1/dir1/dir2/file.html
解析为id=1
和restofurl=/dir1/dir2/file.html
如果您有任何想法,我们将不胜感激。URL中不匹配的部分将作为名为
HandlerMapping的请求属性公开。处理程序映射属性中的路径\u
:
@RequestMapping("/{id}/**")
public void foo(@PathVariable("id") int id, HttpServletRequest request) {
String restOfTheUrl = (String) request.getAttribute(
HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
...
}
我已经使用Tuckey URLRewriteFilter来处理包含“/”字符的路径元素,因为我认为Spring3MVC还不支持它们 您将此筛选器放入应用程序,并提供一个XML配置文件。在该文件中,您提供了重写规则,可以使用这些规则将包含“/”字符的路径元素转换为请求参数,Spring MVC可以使用@RequestParam正确处理这些参数 WEB-INF/WEB.xml:
<filter>
<filter-name>UrlRewriteFilter</filter-name>
<filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
</filter>
<!-- map to /* -->
刚刚发现了与我的问题相对应的问题。使用HandlerMapping常量,我能够为此编写一个小实用程序:
/**
* Extract path from a controller mapping. /controllerUrl/** => return matched **
* @param request incoming request.
* @return extracted path
*/
public static String extractPathFromPattern(final HttpServletRequest request){
String path = (String) request.getAttribute(
HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
String bestMatchPattern = (String ) request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE);
AntPathMatcher apm = new AntPathMatcher();
String finalPath = apm.extractPathWithinPattern(bestMatchPattern, path);
return finalPath;
}
我有一个类似的问题,我这样解决:
@RequestMapping(value = "{siteCode}/**/{fileName}.{fileExtension}")
public HttpEntity<byte[]> getResource(@PathVariable String siteCode,
@PathVariable String fileName, @PathVariable String fileExtension,
HttpServletRequest req, HttpServletResponse response ) throws IOException {
String fullPath = req.getPathInfo();
// Calling http://localhost:8080/SiteXX/images/argentine/flag.jpg
// fullPath conentent: /SiteXX/images/argentine/flag.jpg
}
@RequestMapping(value=“{siteCode}/**/{fileName}.{fileExtension}”)
公共HttpEntity getResource(@PathVariable String siteCode,
@PathVariable字符串文件名,@PathVariable字符串文件扩展名,
HttpServletRequest请求,HttpServletResponse响应)引发IOException{
字符串fullPath=req.getPathInfo();
//召唤http://localhost:8080/SiteXX/images/argentine/flag.jpg
//完整路径客户:/SiteXX/images/agentine/flag.jpg
}
请注意,req.getPathInfo()
将返回完整的路径(带有{siteCode}
和{fileName}.{fileExtension}
),因此您必须方便地进行处理。私有最终静态字符串映射=“/foo/*”;
private final static String MAPPING = "/foo/*";
@RequestMapping(value = MAPPING, method = RequestMethod.GET)
public @ResponseBody void foo(HttpServletRequest request, HttpServletResponse response) {
final String mapping = getMapping("foo").replace("*", "");
final String path = (String) request.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
final String restOfPath = url.replace(mapping, "");
System.out.println(restOfPath);
}
private String getMapping(String methodName) {
Method methods[] = this.getClass().getMethods();
for (int i = 0; i < methods.length; i++) {
if (methods[i].getName() == methodName) {
String mapping[] = methods[i].getAnnotation(RequestMapping.class).value();
if (mapping.length > 0) {
return mapping[mapping.length - 1];
}
}
}
return null;
}
@RequestMapping(值=映射,方法=RequestMethod.GET)
public@ResponseBody void foo(HttpServletRequest请求,HttpServletResponse响应){
最终字符串映射=getMapping(“foo”)。替换(“*”,”);
最终字符串路径=(字符串)request.getAttribute(HandlerMapping.path\u在\u HANDLER\u MAPPING\u属性中);
最后一个字符串restOfPath=url.replace(映射为“”);
System.out.println(restOfPath);
}
私有字符串getMapping(字符串方法名){
方法方法[]=this.getClass().getMethods();
for(int i=0;i0){
返回映射[mapping.length-1];
}
}
}
返回null;
}
是的,restofurl
不仅返回所需的值,而且我们可以使用UriTemplate
匹配来获得值
我已经解决了这个问题,所以这里是问题的有效解决方案:
@RequestMapping("/{id}/**")
public void foo(@PathVariable("id") int id, HttpServletRequest request) {
String restOfTheUrl = (String) request.getAttribute(
HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
/*We can use UriTemplate to map the restOfTheUrl*/
UriTemplate template = new UriTemplate("/{id}/{value}");
boolean isTemplateMatched = template.matches(restOfTheUrl);
if(isTemplateMatched) {
Map<String, String> matchTemplate = new HashMap<String, String>();
matchTemplate = template.match(restOfTheUrl);
String value = matchTemplate.get("value");
/*variable `value` will contain the required detail.*/
}
}
@RequestMapping(“/{id}/**”)
public void foo(@PathVariable(“id”)int-id,HttpServletRequest){
String restofurl=(String)request.getAttribute(
HandlerMapping.PATH_在_HANDLER_MAPPING_属性中);
/*我们可以使用UriTemplate映射RESTOfUrl*/
UriTemplate=newUriTemplate(“/{id}/{value}”);
布尔值isTemplateMatched=template.matches(restofurl);
如果(isTemplateMatched){
Map matchTemplate=新建HashMap();
matchTemplate=template.match(restofurl);
字符串值=matchTemplate.get(“值”);
/*变量'value'将包含所需的详细信息*/
}
}
以下是我是如何做到的。您可以看到我如何将requestedURI转换为文件系统路径(这个SO问题是关于什么的)。奖励:以及如何响应文件
@RequestMapping(value = "/file/{userId}/**", method = RequestMethod.GET)
public void serveFile(@PathVariable("userId") long userId, HttpServletRequest request, HttpServletResponse response) {
assert request != null;
assert response != null;
// requestURL: http://192.168.1.3:8080/file/54/documents/tutorial.pdf
// requestURI: /file/54/documents/tutorial.pdf
// servletPath: /file/54/documents/tutorial.pdf
// logger.debug("requestURL: " + request.getRequestURL());
// logger.debug("requestURI: " + request.getRequestURI());
// logger.debug("servletPath: " + request.getServletPath());
String requestURI = request.getRequestURI();
String relativePath = requestURI.replaceFirst("^/file/", "");
Path path = Paths.get("/user_files").resolve(relativePath);
try {
InputStream is = new FileInputStream(path.toFile());
org.apache.commons.io.IOUtils.copy(is, response.getOutputStream());
response.flushBuffer();
} catch (IOException ex) {
logger.error("Error writing file to output stream. Path: '" + path + "', requestURI: '" + requestURI + "'");
throw new RuntimeException("IOError writing file to output stream");
}
}
这已经在这里有一段时间了,但是发布了这个。可能对某人有用
@RequestMapping( "/{id}/**" )
public void foo( @PathVariable String id, HttpServletRequest request ) {
String urlTail = new AntPathMatcher()
.extractPathWithinPattern( "/{id}/**", request.getRequestURI() );
}
您需要使用内置的
路径匹配器
:
@RequestMapping("/{id}/**")
public void test(HttpServletRequest request, @PathVariable long id) throws Exception {
ResourceUrlProvider urlProvider = (ResourceUrlProvider) request
.getAttribute(ResourceUrlProvider.class.getCanonicalName());
String restOfUrl = urlProvider.getPathMatcher().extractPathWithinPattern(
String.valueOf(request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE)),
String.valueOf(request.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE)));
在此基础上,我认为如果URL的***
部分可以通过注释作为控制器方法的参数提供,这将是一件好事,其方式类似于@RequestParam
和@PathVariable
,而不是总是使用明确需要HttpServletRequest
的实用程序方法。下面是一个如何实现的示例。希望有人觉得它有用
创建注释以及参数解析器:
@Target(ElementType.PARAMETER)
@保留(RetentionPolicy.RUNTIME)
@记录
公共@接口通配符参数{
类解析器实现HandlerMethodArgumentResolver{
@凌驾
公共布尔支持参数(MethodParameter MethodParameter){
返回methodParameter.getParameterAnnotation(WildcardParam.class)!=null;
}
@凌驾
公共对象resolveArgument(MethodParameter MethodParameter、ModelAndViewContainer ModelAndViewContainer、NativeWebRequest NativeWebRequest、WebDataBinder Factory WebDataBinder Factory)引发异常{
HttpServletRequest=nativeWebRequest.getNativeRequest(HttpServletRequest.class);
返回请求==null?null:新AntPathMatcher().extractPathWithinPattern(
(字符串)request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_属性),
(String)request.getAttribute(HandlerMapping.PATH_在\u HANDLER\u MAPPING\u属性中));
}
}
}
注册方法参数解析程序:
@配置
公共类WebMvcConfig实现WebMVCConfiguer{
@凌驾
公共无效AddArgumentResolver(列表解析程序){
add(新的WildcardParam.Resolver());
}
}
使用控制器处理程序方法中的注释可以轻松访问URL的**
部分:
@RestController
公共类控制器{
@GetMapping(“/**”)
@RequestMapping( "/{id}/**" )
public void foo( @PathVariable String id, HttpServletRequest request ) {
String urlTail = new AntPathMatcher()
.extractPathWithinPattern( "/{id}/**", request.getRequestURI() );
}
@RequestMapping("/{id}/**")
public void test(HttpServletRequest request, @PathVariable long id) throws Exception {
ResourceUrlProvider urlProvider = (ResourceUrlProvider) request
.getAttribute(ResourceUrlProvider.class.getCanonicalName());
String restOfUrl = urlProvider.getPathMatcher().extractPathWithinPattern(
String.valueOf(request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE)),
String.valueOf(request.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE)));