JavaServer Pages Pocket Reference

Name

pageContext

Variable name:

pageContext

Class name:

javax.servlet.jsp.PageContext

Extends:

None

Implements:

None

Implemented by:

A concrete subclass of this abstract class is provided as an internal container-dependent class.

JSP page type:

Available in both regular JSP pages and error pages

Description

A PageContext instance provides access to all the JSP scopes and several page attributes, and offers a layer above the container-implementation details to enable a container to generate portable JSP implementation classes. The JSP page scope is represented by PageContext attributes. A unique instance of this object is created by the web container and assigned to the pageContext variable for each request.

Constants

public static final int PAGE_SCOPE = 1;
public static final int REQUEST_SCOPE = 2;
public static final int SESSION_SCOPE = 3;
public static final int APPLICATION_SCOPE = 4;

Constructor

public PageContext()

Creates an instance of the PageContext class. Typically, the JspFactory class creates and initializes the instance.

Methods

public abstract Object findAttribute(String name)

Searches for the named attribute in the page, request, session (if valid), and application scope(s) in order and returns the associated value. If the attribute is not found, returns null.

public abstract void forward(String relativeUrlPath) throws ServletException, java.io.IOException

Forwards the current request to another active component in the application, such as a servlet or JSP page. If the specified ...