What s the best way to get the current URL in Spring MVC

Question

I d like to create URLs based on the URL used by the client for the active request  Is there anything smarter than taking the current HttpServletRequest object and it s getParameter      methods to rebuilt the complete URL including  and only  it s GET parameters   Clarification  If possible I want to resign from using a HttpServletRequest object

User · Answer

You can also add a UriComponentsBuilder to the method signature of your controller method  Spring will inject an instance of the builder created from the current request    GetMapping public ResponseEntity lt MyResponse gt  doSomething UriComponentsBuilder uriComponentsBuilder        URI someNewUriBasedOnCurrentRequest   uriComponentsBuilder              replacePath null               replaceQuery null               pathSegment  some    new    path                build   toUri                Using the builder you can directly start creating URIs based on the current request e g  modify path segments   See also UriComponentsBuilderMethodArgumentResolver

User · Answer

Instead of using RequestContextHolder directly  you can also use ServletUriComponentsBuilder and its static methods    ServletUriComponentsBuilder fromCurrentContextPath   ServletUriComponentsBuilder fromCurrentServletMapping   ServletUriComponentsBuilder fromCurrentRequestUri   ServletUriComponentsBuilder fromCurrentRequest     They use RequestContextHolder under the hood  but provide additional flexibility to build new URLs using the capabilities of UriComponentsBuilder   Example   ServletUriComponentsBuilder builder   ServletUriComponentsBuilder fromCurrentRequestUri    builder scheme  https    builder replaceQueryParam  someBoolean   false   URI newUri   builder build   toUri

User · Answer

in jsp file   request getAttribute  javax servlet forward request uri

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If you need the URL till hostname and not the path use Apache s Common Lib StringUtil  and from URL extract the substring till third indexOf     public static String getURL HttpServletRequest request      String fullURL   request getRequestURL   toString       return fullURL substring 0 StringUtils ordinalIndexOf fullURL       3         Example  If fullURL is https   example com path after url  then Output will be  https   example com

User · Answer

Java s URI Class can help you out of this   public static String getCurrentUrl HttpServletRequest request       URL url   new URL request getRequestURL   toString         String host    url getHost        String userInfo   url getUserInfo        String scheme   url getProtocol        String port   url getPort        String path   request getAttribute  javax servlet forward request uri        String query   request getAttribute  javax servlet forward query string         URI uri   new URI scheme userInfo host port path query null      return uri toString

User · Answer

Well there are two methods to access this data easier  but the interface doesn t offer the possibility to get the whole URL with one call  You have to build it manually   public static String makeUrl HttpServletRequest request        return request getRequestURL   toString           request getQueryString        I don t know about a way to do this with any Spring MVC facilities   If you want to access the current Request without passing it everywhere you will have to add a listener in the web xml    lt listener gt       lt listener-class gt org springframework web context request RequestContextListener lt  listener-class gt   lt  listener gt    And then use this to get the request bound to the current Thread     ServletRequestAttributes  RequestContextHolder currentRequestAttributes    getRequest

[url] What's the best way to get the current URL in Spring MVC?

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