org.apache.jasper.runtime
Class HttpJspBase

java.lang.Object
  |
  +--javax.servlet.GenericServlet
        |
        +--javax.servlet.http.HttpServlet
              |
              +--org.apache.jasper.runtime.HttpJspBase

All Implemented Interfaces:

HttpJspPage, JspPage, java.io.Serializable, Servlet, ServletConfig

public abstract class HttpJspBase

extends HttpServlet

implements HttpJspPage

This is the subclass of all JSP-generated servlets.

Author:

Anil K. Vijendran

See Also:

Serialized Form

Method Summary

abstract void	_jspService(HttpServletRequest request, HttpServletResponse response) _jspService corresponds to the body of the JSP page.
void	destroy() Called by the servlet container to indicate to a servlet that the servlet is being taken out of service.
java.lang.String	getServletInfo() Returns information about the servlet, such as author, version, and copyright.
void	init(ServletConfig config) Called by the servlet container to indicate to a servlet that the servlet is being placed into service.
void	jspDestroy() jsp_destroy() is invoked when the JspPage is about to be destroyed.
void	jspInit() jsp_init() is invoked when the JspPage is initialized.
void	service(HttpServletRequest request, HttpServletResponse response) Entry point into service.
void	setClassLoader(java.lang.ClassLoader cl)

Methods inherited from class javax.servlet.http.HttpServlet

service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletName, init, log, log

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.servlet.Servlet

getServletConfig, service

Method Detail

init

public final void init(ServletConfig config)
                throws ServletException

Description copied from interface: Servlet

Called by the servlet container to indicate to a servlet that the servlet is being placed into service.

The servlet container calls the init method exactly once after instantiating the servlet. The init method must complete successfully before the servlet can receive any requests.

The servlet container cannot place the servlet into service if the init method

1. Throws a ServletException
2. Does not return within a time period defined by the Web server

Specified by:

init in interface Servlet

Overrides:

init in class GenericServlet

Following copied from interface: javax.servlet.Servlet

Parameters:

config - a ServletConfig object containing the servlet's configuration and initialization parameters

Throws:

ServletException - if an exception has occurred that interferes with the servlet's normal operation

See Also:

UnavailableException, Servlet.getServletConfig()

getServletInfo

public java.lang.String getServletInfo()

Description copied from interface: Servlet

Returns information about the servlet, such as author, version, and copyright.

The string that this method returns should be plain text and not markup of any kind (such as HTML, XML, etc.).

Specified by:

getServletInfo in interface Servlet

Overrides:

getServletInfo in class GenericServlet

Following copied from interface: javax.servlet.Servlet

Returns:

a String containing servlet information

destroy

public final void destroy()

Description copied from interface: Servlet

Called by the servlet container to indicate to a servlet that the servlet is being taken out of service. This method is only called once all threads within the servlet's service method have exited or after a timeout period has passed. After the servlet container calls this method, it will not call the service method again on this servlet.

This method gives the servlet an opportunity to clean up any resources that are being held (for example, memory, file handles, threads) and make sure that any persistent state is synchronized with the servlet's current state in memory.

Specified by:

destroy in interface Servlet

Overrides:

destroy in class GenericServlet

setClassLoader

public final void setClassLoader(java.lang.ClassLoader cl)

service

public final void service(HttpServletRequest request,
                          HttpServletResponse response)
                   throws ServletException,
                          java.io.IOException

Entry point into service.

jspInit

public void jspInit()

Description copied from interface: JspPage

jsp_init() is invoked when the JspPage is initialized. At this point getServletConfig() will return the desired value.

Specified by:

jspInit in interface JspPage

jspDestroy

public void jspDestroy()

Description copied from interface: JspPage

jsp_destroy() is invoked when the JspPage is about to be destroyed.

Specified by:

jspDestroy in interface JspPage

_jspService

public abstract void _jspService(HttpServletRequest request,
                                 HttpServletResponse response)
                          throws ServletException,
                                 java.io.IOException

Description copied from interface: HttpJspPage

_jspService corresponds to the body of the JSP page. This method is defined automatically by the JSP processor and should NEVER BE DEFINED BY THE JSP AUTHOR

Specified by:

_jspService in interface HttpJspPage