Module jakarta.servlet

Package jakarta.servlet

Class GenericServlet

java.lang.Object

jakarta.servlet.GenericServlet

All Implemented Interfaces:

Servlet, ServletConfig, Serializable

Direct Known Subclasses:

HttpServlet

public abstract class GenericServlet
extends Object
implements Servlet, ServletConfig, Serializable

The GenericServlet API.

Author:

Manfred Riem ([email protected])

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
GenericServlet()	Constructor.

Method Summary

Modifier and Type	Method	Description
void	destroy()	Destroy the servlet.
String	getInitParameter(String name)	Get the init parameter.
Enumeration<String>	getInitParameterNames()	Returns the init parameter names.
ServletConfig	getServletConfig()	Returns the servlet config.
ServletContext	getServletContext()	Returns the servlet context.
String	getServletInfo()	Get the servlet info.
String	getServletName()	Returns the servlet name.
void	init()	Init the servlet.
void	init(ServletConfig config)	Called by the servlet container to indicate to a servlet that the servlet is being placed into service.
void	log(String message)	Log the message.
void	log(String message, Throwable throwable)	Log the message.
abstract void	service(ServletRequest request, ServletResponse response)	Process the request.

Methods inherited from class java.lang.Object

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

Constructor Details

GenericServlet

public GenericServlet()

Constructor.

Method Details

destroy

public void destroy()

Destroy the servlet.

Specified by:

destroy in interface Servlet

getInitParameter

public String getInitParameter(String name)

Get the init parameter.

Specified by:

getInitParameter in interface ServletConfig

Parameters:

name - the name.

Returns:

the value, or null.

getInitParameterNames

public Enumeration<String> getInitParameterNames()

Returns the init parameter names.

Specified by:

getInitParameterNames in interface ServletConfig

Returns:

the init parameter names

getServletConfig

public ServletConfig getServletConfig()

Returns the servlet config.

Specified by:

getServletConfig in interface Servlet

Returns:

the servlet config

getServletContext

public ServletContext getServletContext()

Returns the servlet context.

Specified by:

getServletContext in interface ServletConfig

Returns:

the servlet context

getServletInfo

public String getServletInfo()

Get the servlet info.

Specified by:

getServletInfo in interface Servlet

Returns:

""

getServletName

public String getServletName()

Returns the servlet name.

Specified by:

getServletName in interface ServletConfig

Returns:

the servlet name

init

public void init(ServletConfig config)
          throws ServletException

Called by the servlet container to indicate to a servlet that the servlet is being placed into service. See Servlet.init(jakarta.servlet.ServletConfig).

This implementation stores the ServletConfig object it receives from the servlet container for later use. When overriding this form of the method, call super.init(config).

Specified by:

init in interface Servlet

Parameters:

config - the ServletConfig object that contains configuration information for this servlet

Throws:

ServletException - if an exception occurs that interrupts the servlet's normal operation

See Also:

UnavailableException

init

public void init()
          throws ServletException

Init the servlet.

Throws:

ServletException - when a servlet error occurs.

log

public void log(String message)

Log the message.

Parameters:

message - the message.

log

public void log(String message,
 Throwable throwable)

Log the message.

Parameters:

message - the message.

throwable - the throwable.

service

public abstract void service(ServletRequest request,
 ServletResponse response)
                      throws ServletException,
IOException

Process the request.

Specified by:

service in interface Servlet

Parameters:

request - the request.

response - the response.

Throws:

IOException - when an I/O error occurs.

ServletException - when a servlet error occurs.