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Page lists

 

Page lists allow you to avoid hard-coding Uniform Resource Locators (URLs) in servlets and JSP files. A page list specifies the location where a request is to be forwarded, but automatically customizes that location depending on the MIME type of the servlet. Use these properties to specify a markup language and an associated MIME type. For the given MIME type, you also specify a set of pages to invoke.

The PageList Servlet custom extension is deprecated in WAS V6.1 and will be removed in a future release. Re-architect your legacy applications to use javax.servlet.filter classes instead of com.ibm.servlet classes. Starting from the Servlet 2.3 specification, javax.servlet.filter classes you can intercept requests and examine responses. You can also use javax.servlet.filter classes to achieve chaining functionality, as well as embellishing or truncating responses. The following list of classes are deprecated:

WAS supplies the PageListServlet servlet, which you can use to call a JavaServer Pages file by name based on the configuration data in the client_types.xml file. This file maps a JSP file to a URI. When the URI is invoked, it specifies another JSP file in a Web module. This support allows you to access multiple URLs without hard-coding them in your servlets.

You can also logically group page lists according to the markup language type, such as, Hypertext Markup Language (HTML) or Wireless Markup Language (WML). This allows applications that use servlets to extend the PageListServlet servlet, to call JSP files which return the proper markup-language type for the client request. For example, a request that originates from a PDA device requires WML data. The appserver sends the request to a servlet that extends the PageListServlet servlet, and the servlet calls a JSP file that returns a WML response.

 

Related tasks


Configure page list servlet client configurations

 

Related Reference


Client type detection support
client_types.xml
Web applications: Resources for learning