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15.3 Including Static or Dynamic Content

375

Listing 15.9 HotelInfo.java 

package coreservlets;

/** Simple class describing a hotel name and associated

 *  frequent guest number, used from the TravelData class

 *  (where an array of HotelInfo is associated with

 *  each customer).

 */

public class HotelInfo {

  private String hotelName, frequentGuestNumber;

  public HotelInfo(String hotelName,

                   String frequentGuestNumber) {

    this.hotelName = hotelName;

    this.frequentGuestNumber = frequentGuestNumber;

  }

  public String getHotelName() {

    return(hotelName);

  }

  public String getfrequentGuestNumber() {

    return(frequentGuestNumber);

  }

}

15.3 Including Static or Dynamic 

Content

If a servlet uses the 

forward

 method of 

RequestDispatcher

, it cannot actu 

ally send any output to the client it must leave that entirely to the destina 

tion page. If the servlet wants to generate some of the content itself but use a

JSP page or static HTML document for other parts of the result, the servlet

can use the 

include

 method of 

RequestDispatcher

 instead. The process is

very similar to that for forwarding requests: call the 

getRequestDispatcher

method of 

ServletContext

 with an address relative to the server root, then

call 

include

 with the 

HttpServletRequest

 and 

HttpServletResponse

.

The two differences when 

include

 is used are that you can send content to

the browser before making the call and that control is returned to the servlet

after the 

include

 call finishes. Although the included pages (servlets, JSP

Second edition of this book: www.coreservlets.com; Sequel: www.moreservlets.com.

Servlet and JSP training courses by book's author: courses.coreservlets.com.