Class FilterBase

    • Constructor Detail

      • FilterBase

        public FilterBase()
    • Method Detail

      • getLogger

        protected abstract Log getLogger()
      • init

        public void init​(FilterConfig filterConfig)
                  throws ServletException
        Iterates over the configuration parameters and either logs a warning, or throws an exception for any parameter that does not have a matching setter in this filter.
        Specified by:
        init in interface Filter
        Parameters:
        filterConfig - The configuration information associated with the filter instance being initialised
        Throws:
        ServletException - if isConfigProblemFatal() returns true and a configured parameter does not have a matching setter
      • destroy

        public void destroy()
        Description copied from interface: javax.servlet.Filter
        Called by the web container to indicate to a filter that it is being taken out of service. This method is only called once all threads within the filter's doFilter method have exited or after a timeout period has passed. After the web container calls this method, it will not call the doFilter method again on this instance of the filter.

        This method gives the filter an opportunity to clean up any resources that are being held (for example, memory, file handles, threads) and make sure that any persistent state is synchronized with the filter's current state in memory.
        Specified by:
        destroy in interface Filter
      • isConfigProblemFatal

        protected boolean isConfigProblemFatal()
        Determines if an exception when calling a setter or an unknown configuration attribute triggers the failure of the this filter which in turn will prevent the web application from starting.
        Returns:
        true if a problem should trigger the failure of this filter, else false