Package org.springframework.web.servlet.handler

Class MappedInterceptor

java.lang.Object
org.springframework.web.servlet.handler.MappedInterceptor
All Implemented Interfaces:
HandlerInterceptor
public final class MappedInterceptor extends Object implements HandlerInterceptor
Wraps a HandlerInterceptor and uses URL patterns to determine whether it applies to a given request.

Pattern matching can be done with PathMatcher or with parsed PathPattern. The syntax is largely the same with the latter being more tailored for web usage and more efficient. The choice is driven by the presence of a resolved String lookupPath or a parsed RequestPath which in turn depends on the HandlerMapping that matched the current request.

MappedInterceptor is supported by sub-classes of AbstractHandlerMethodMapping which detect beans of type MappedInterceptor and also check if interceptors directly registered with it are of this type.

Since:
3.0
Author:
Keith Donald, Rossen Stoyanchev, Brian Clozel

  • Constructor Details

  • Method Details

    • getPathPatterns

      @Nullable public String[] getPathPatterns()
      Return the patterns this interceptor is mapped to.

    • getInterceptor

      public HandlerInterceptor getInterceptor()
      The target HandlerInterceptor to invoke in case of a match.

    • setPathMatcher

      public void setPathMatcher(PathMatcher pathMatcher)
      Configure the PathMatcher to use to match URL paths with against include and exclude patterns.

      This is an advanced property that should be used only when a customized AntPathMatcher or a custom PathMatcher is required.

      By default this is AntPathMatcher.

      Note: Setting PathMatcher enforces use of String pattern matching even when a parsed RequestPath is available.

    • getPathMatcher

      public PathMatcher getPathMatcher()
      The configured PathMatcher.

    • matches

      public boolean matches(HttpServletRequest request)
      Check whether this interceptor is mapped to the request.

      The request mapping path is expected to have been resolved externally. See also class-level Javadoc.

      Parameters:
      request - the request to match to
      Returns:
      true if the interceptor should be applied to the request

    • matches

      @Deprecated public boolean matches(String lookupPath, PathMatcher pathMatcher)
      Deprecated.
      as of 5.3 in favor of matches(HttpServletRequest)
      Determine a match for the given lookup path.
      Parameters:
      lookupPath - the current request path
      pathMatcher - a path matcher for path pattern matching
      Returns:
      true if the interceptor applies to the given request path

    • preHandle

      public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception
      Description copied from interface: HandlerInterceptor
      Interception point before the execution of a handler. Called after HandlerMapping determined an appropriate handler object, but before HandlerAdapter invokes the handler.

      DispatcherServlet processes a handler in an execution chain, consisting of any number of interceptors, with the handler itself at the end. With this method, each interceptor can decide to abort the execution chain, typically sending an HTTP error or writing a custom response.

      Note: special considerations apply for asynchronous request processing. For more details see AsyncHandlerInterceptor.

      The default implementation returns true.

      Specified by:
      preHandle in interface HandlerInterceptor
      Parameters:
      request - current HTTP request
      response - current HTTP response
      handler - chosen handler to execute, for type and/or instance evaluation
      Returns:
      true if the execution chain should proceed with the next interceptor or the handler itself. Else, DispatcherServlet assumes that this interceptor has already dealt with the response itself.
      Throws:
      Exception - in case of errors

    • postHandle

      public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable ModelAndView modelAndView) throws Exception
      Description copied from interface: HandlerInterceptor
      Interception point after successful execution of a handler. Called after HandlerAdapter actually invoked the handler, but before the DispatcherServlet renders the view. Can expose additional model objects to the view via the given ModelAndView.

      DispatcherServlet processes a handler in an execution chain, consisting of any number of interceptors, with the handler itself at the end. With this method, each interceptor can post-process an execution, getting applied in inverse order of the execution chain.

      Note: special considerations apply for asynchronous request processing. For more details see AsyncHandlerInterceptor.

      The default implementation is empty.

      Specified by:
      postHandle in interface HandlerInterceptor
      Parameters:
      request - current HTTP request
      response - current HTTP response
      handler - the handler (or HandlerMethod) that started asynchronous execution, for type and/or instance examination
      modelAndView - the ModelAndView that the handler returned (can also be null)
      Throws:
      Exception - in case of errors

    • afterCompletion

      public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception
      Description copied from interface: HandlerInterceptor
      Callback after completion of request processing, that is, after rendering the view. Will be called on any outcome of handler execution, thus allows for proper resource cleanup.

      Note: Will only be called if this interceptor's preHandle method has successfully completed and returned true!

      As with the postHandle method, the method will be invoked on each interceptor in the chain in reverse order, so the first interceptor will be the last to be invoked.

      Note: special considerations apply for asynchronous request processing. For more details see AsyncHandlerInterceptor.

      The default implementation is empty.

      Specified by:
      afterCompletion in interface HandlerInterceptor
      Parameters:
      request - current HTTP request
      response - current HTTP response
      handler - the handler (or HandlerMethod) that started asynchronous execution, for type and/or instance examination
      ex - any exception thrown on handler execution, if any; this does not include exceptions that have been handled through an exception resolver
      Throws:
      Exception - in case of errors