org.springframework.web.servlet.mvc

## Class UrlFilenameViewController

- java.lang.Object
- - org.springframework.context.support.ApplicationObjectSupport
  - - org.springframework.web.context.support.WebApplicationObjectSupport
    - - org.springframework.web.servlet.support.WebContentGenerator
      - - org.springframework.web.servlet.mvc.AbstractController
        - - org.springframework.web.servlet.mvc.AbstractUrlViewController
          - - org.springframework.web.servlet.mvc.UrlFilenameViewController

- All Implemented Interfaces:
    Aware, ApplicationContextAware, ServletContextAware, Controller

      public class UrlFilenameViewController
      extends AbstractUrlViewController

  Simple `Controller` implementation that transforms the virtual path of a URL into a view name and returns that view.

  Can optionally prepend a `prefix` and/or append a `suffix` to build the viewname from the URL filename.

  Find below some examples:

  1. `"/index" -> "index"`
  2. `"/index.html" -> "index"`
  3. `"/index.html"` + prefix `"pre_"` and suffix `"_suf" -> "pre_index_suf"`
  4. `"/products/view.html" -> "products/view"`

  Thanks to David Barri for suggesting prefix/suffix support!

  Author:
    Alef Arendsen, Juergen Hoeller, Rob Harrop
  See Also:
    `setPrefix(java.lang.String)`, `setSuffix(java.lang.String)`

- - ### Field Summary

    - ### Fields inherited from class org.springframework.web.servlet.support.WebContentGenerator

      `METHOD_GET, METHOD_HEAD, METHOD_POST`

    - ### Fields inherited from class org.springframework.context.support.ApplicationObjectSupport

      `logger`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `UrlFilenameViewController()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected String` | `extractOperableUrl(HttpServletRequest request)` Extract a URL path from the given request, suitable for view name extraction.
    `protected String` | `extractViewNameFromUrlPath(String uri)` Extract the URL filename from the given request URI.
    `protected String` | `getPrefix()` Return the prefix to prepend to the request URL filename.
    `protected String` | `getSuffix()` Return the suffix to append to the request URL filename.
    `protected String` | `getViewNameForRequest(HttpServletRequest request)` Returns view name based on the URL filename, with prefix/suffix applied when appropriate.
    `protected String` | `getViewNameForUrlPath(String uri)` Returns view name based on the URL filename, with prefix/suffix applied when appropriate.
    `protected String` | `postProcessViewName(String viewName)` Build the full view name based on the given view name as indicated by the URL path.
    `void` | `setPrefix(String prefix)` Set the prefix to prepend to the request URL filename to build a view name.
    `void` | `setSuffix(String suffix)` Set the suffix to append to the request URL filename to build a view name.

    - ### Methods inherited from class org.springframework.web.servlet.mvc.AbstractUrlViewController

      `getUrlPathHelper, handleRequestInternal, setAlwaysUseFullPath, setRemoveSemicolonContent, setUrlDecode, setUrlPathHelper`

    - ### Methods inherited from class org.springframework.web.servlet.mvc.AbstractController

      `handleRequest, isSynchronizeOnSession, setSynchronizeOnSession`

    - ### Methods inherited from class org.springframework.web.servlet.support.WebContentGenerator

      `applyCacheSeconds, applyCacheSeconds, cacheForSeconds, cacheForSeconds, checkAndPrepare, checkAndPrepare, getCacheSeconds, getSupportedMethods, isAlwaysMustRevalidate, isRequireSession, isUseCacheControlHeader, isUseCacheControlNoStore, isUseExpiresHeader, preventCaching, setAlwaysMustRevalidate, setCacheSeconds, setRequireSession, setSupportedMethods, setUseCacheControlHeader, setUseCacheControlNoStore, setUseExpiresHeader`

    - ### Methods inherited from class org.springframework.web.context.support.WebApplicationObjectSupport

      `getServletContext, getTempDir, getWebApplicationContext, initApplicationContext, initServletContext, isContextRequired, setServletContext`

    - ### Methods inherited from class org.springframework.context.support.ApplicationObjectSupport

      `getApplicationContext, getMessageSourceAccessor, initApplicationContext, requiredContextClass, setApplicationContext`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### UrlFilenameViewController

          public UrlFilenameViewController()

  - ### Method Detail

    - #### setPrefix

          public void setPrefix(String prefix)

      Set the prefix to prepend to the request URL filename to build a view name.

    - #### getPrefix

          protected String getPrefix()

      Return the prefix to prepend to the request URL filename.

    - #### setSuffix

          public void setSuffix(String suffix)

      Set the suffix to append to the request URL filename to build a view name.

    - #### getSuffix

          protected String getSuffix()

      Return the suffix to append to the request URL filename.

    - #### getViewNameForRequest

          protected String getViewNameForRequest(HttpServletRequest request)

      Returns view name based on the URL filename, with prefix/suffix applied when appropriate.
      Specified by:
        `getViewNameForRequest` in class `AbstractUrlViewController`
      Parameters:
        `request` - current HTTP request
      Returns:
        a view name for this request (never `null`)
      See Also:
        `extractViewNameFromUrlPath(java.lang.String)`, `setPrefix(java.lang.String)`, `setSuffix(java.lang.String)`

    - #### extractOperableUrl

          protected String extractOperableUrl(HttpServletRequest request)

      Extract a URL path from the given request, suitable for view name extraction.
      Parameters:
        `request` - current HTTP request
      Returns:
        the URL to use for view name extraction

    - #### getViewNameForUrlPath

          protected String getViewNameForUrlPath(String uri)

      Returns view name based on the URL filename, with prefix/suffix applied when appropriate.
      Parameters:
        `uri` - the request URI; for example `"/index.html"`
      Returns:
        the extracted URI filename; for example `"index"`
      See Also:
        `extractViewNameFromUrlPath(java.lang.String)`, `postProcessViewName(java.lang.String)`

    - #### extractViewNameFromUrlPath

          protected String extractViewNameFromUrlPath(String uri)

      Extract the URL filename from the given request URI.
      Parameters:
        `uri` - the request URI; for example `"/index.html"`
      Returns:
        the extracted URI filename; for example `"index"`

    - #### postProcessViewName

          protected String postProcessViewName(String viewName)

      Build the full view name based on the given view name as indicated by the URL path.

      The default implementation simply applies prefix and suffix. This can be overridden, for example, to manipulate upper case / lower case, etc.

      Parameters:
        `viewName` - the original view name, as indicated by the URL path
      Returns:
        the full view name to use
      See Also:
        `getPrefix()`, `getSuffix()`