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Java Servlet Programming, 2nd Edition
book

Java Servlet Programming, 2nd Edition

by Jason Hunter, William Crawford
April 2001
Intermediate to advanced content levelIntermediate to advanced
780 pages
23h 48m
English
O'Reilly Media, Inc.
Content preview from Java Servlet Programming, 2nd Edition

Name

RequestDispatcher

Synopsis

Interface Name: javax.servlet.RequestDispatcher

Superinterface: None

Immediate Subinterfaces: None

Implemented By: None

Availability: Servlet API 2.1 and later

Description

The interface for an object that can internally dispatch requests to any resource (such as a servlet, HTML file, or JSP file) on the server. The servlet container creates the RequestDispatcher object that is then used as a wrapper around a server resource located at a particular path or given by a particular name. This interface is intended to wrap servlets and JSP pages, but a servlet container can create RequestDispatcher objects to wrap any type of resource. The dispatching can be used to forward a request to the resource or to include the content of that resource into the current response. This class was introduced in Servlet API 2.1.

Interface Declaration

public interface RequestDispatcher {
  // Methods
  public abstract void forward(ServletRequest req, ServletResponse res)
    throws ServletException, java.io.IOException             // New in 2.1
  public abstract void include(ServletRequest req, ServletResponse res)
    throws ServletException, java.io.IOException             // New in 2.1
}

Methods

forward()

public abstract void forward(ServletRequest req, ServletResponse res)  
  throws ServletException, IOException, IllegalStateException
Description

Forwards a request from a servlet to another resource on the server. This method allows one servlet to do preliminary processing of a request and another resource to generate ...

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Publisher Resources

ISBN: 0596000405Supplemental ContentErrata Page