Class Filter.Chain

Enclosing class:

public static class Filter.Chain extends Object
A chain of filters associated with a HttpServer. Each filter in the chain is given one of these so it can invoke the next filter in the chain.
  • Constructor Details

    • Chain

      public Chain(List<Filter> filters, HttpHandler handler)
      Creates a Chain instance with given filters and handler.
      filters - the filters that make up the Chain
      handler - the HttpHandler that will be invoked after the final Filter has finished
  • Method Details

    • doFilter

      public void doFilter(HttpExchange exchange) throws IOException
      Calls the next filter in the chain, or else the users exchange handler, if this is the final filter in the chain. The Filter may decide to terminate the chain, by not calling this method. In this case, the filter must send the response to the request, because the application's exchange handler will not be invoked.
      exchange - the HttpExchange
      IOException - if an I/O error occurs
      NullPointerException - if exchange is null