Package chapters.mdc

Class UserServletFilter

  • All Implemented Interfaces:
    javax.servlet.Filter
    public class UserServletFilter
extends java.lang.Object
implements javax.servlet.Filter
    A simple servlet filter that puts the username found either in the Principal.

    The value is removed from the MDC once the request has been fully processed.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private java.lang.String USER_KEY  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void destroy()  
      void doFilter​(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)  
      void init​(javax.servlet.FilterConfig arg0)  
      private boolean registerUsername​(java.lang.String username)
      Register the user in the MDC under USER_KEY.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • UserServletFilter

        public UserServletFilter()

    • Method Detail

      • destroy

        public void destroy()
        Specified by:
        destroy in interface javax.servlet.Filter

      • doFilter

        public void doFilter​(javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response,
                     javax.servlet.FilterChain chain)
              throws java.io.IOException,
                     javax.servlet.ServletException
        Specified by:
        doFilter in interface javax.servlet.Filter
        Throws:
        java.io.IOException
        javax.servlet.ServletException

      • init

        public void init​(javax.servlet.FilterConfig arg0)
          throws javax.servlet.ServletException
        Specified by:
        init in interface javax.servlet.Filter
        Throws:
        javax.servlet.ServletException

      • registerUsername

        private boolean registerUsername​(java.lang.String username)
        Register the user in the MDC under USER_KEY.
        Parameters:
        username -
        Returns:
        true id the user can be successfully registered