Package javax.servlet.http

Interface HttpServletMapping


  • public interface HttpServletMapping

    Allows runtime discovery of the manner in which the HttpServlet for the current HttpServletRequest was invoked. Invoking any of the methods must not block the caller. The implementation must be thread safe. Instances are immutable and are returned from HttpServletRequest.getHttpServletMapping().

    Following are some illustrative examples for various combinations of mappings. Consider the following Servlet declaration:

    
 <servlet>
     <servlet-name>MyServlet</servlet-name>
     <servlet-class>MyServlet</servlet-class>
 </servlet>
 <servlet-mapping>
     <servlet-name>MyServlet</servlet-name>
     <url-pattern>/MyServlet</url-pattern>
     <url-pattern>""</url-pattern>
     <url-pattern>*.extension</url-pattern>
     <url-pattern>/path/*</url-pattern>
 </servlet-mapping>

    The expected values of the properties for various incoming URI path values are as shown in this table. The servletName column is omitted as its value is always MyServlet.

    Expected values of properties for various URI paths
    URI Path (in quotes) matchValue pattern mappingMatch
    "" "" "" CONTEXT_ROOT
    "/index.html" "" / DEFAULT
    "/MyServlet" MyServlet /MyServlet EXACT
    "/foo.extension" foo *.extension EXTENSION
    "/path/foo" foo /path/* PATH
    Since:
    4.0

    • Method Detail

      • getMatchValue

        java.lang.String getMatchValue​()

        Return the portion of the URI path that caused this request to be matched. If the getMappingMatch() value is CONTEXT_ROOT or DEFAULT, this method must return the empty string. If the getMappingMatch() value is EXACT, this method must return the portion of the path that matched the servlet, omitting any leading slash. If the getMappingMatch() value is EXTENSION or PATH, this method must return the value that matched the '*'. See the class javadoc for examples.

        Returns:
        the match.
        Since:
        4.0

      • getPattern

        java.lang.String getPattern​()

        Return the String representation for the url-pattern for this mapping. If the getMappingMatch() value is CONTEXT_ROOT or DEFAULT, this method must return the empty string. If the getMappingMatch() value is EXTENSION, this method must return the pattern, without any leading slash. Otherwise, this method returns the pattern exactly as specified in the descriptor or Java configuration.

        Returns:
        the String representation for the url-pattern for this mapping.
        Since:
        4.0

      • getServletName

        java.lang.String getServletName​()

        Return the String representation for the servlet-name for this mapping. If the Servlet providing the response is the default servlet, the return from this method is the name of the defautl servlet, which is container specific.

        Returns:
        the String representation for the servlet-name for this mapping.
        Since:
        4.0

      • getMappingMatch

        MappingMatch getMappingMatch​()

        Return the MappingMatch for this instance

        Returns:
        the MappingMatch for this instance.
        Since:
        4.0