org.openqa.jetty.jetty.servlet

Class ServletHandler

java.lang.Object

org.openqa.jetty.util.Container

org.openqa.jetty.jetty.servlet.ServletHandler

All Implemented Interfaces:

Serializable, HttpHandler, EventProvider, LifeCycle

Direct Known Subclasses:

WebApplicationHandler

public class ServletHandler
extends Container
implements HttpHandler

Servlet HttpHandler. This handler maps requests to servlets that implement the javax.servlet.http.HttpServlet API.

This handler does not implement the full J2EE features and is intended to be used when a full web application is not required. Specifically filters and request wrapping are not supported.

If a SessionManager is not added to the handler before it is initialized, then a HashSessionManager with a standard java.util.Random generator is created.

Version:

$Id: ServletHandler.java,v 1.133 2006/03/15 14:43:00 gregwilkins Exp $

Author:

Greg Wilkins

See Also:

WebApplicationHandler, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	__DEFAULT_SERVLET
static String	__J_S_CONTEXT_TEMPDIR
static String	__J_S_ERROR_EXCEPTION
static String	__J_S_ERROR_EXCEPTION_TYPE
static String	__J_S_ERROR_MESSAGE
static String	__J_S_ERROR_REQUEST_URI
static String	__J_S_ERROR_SERVLET_NAME
static String	__J_S_ERROR_STATUS_CODE
protected Map	_attributes
protected org.openqa.jetty.jetty.servlet.ServletHandler.Context	_context
protected org.apache.commons.logging.Log	_contextLog
protected String	_formErrorPage
protected String	_formLoginPage
protected HttpContext	_httpContext
protected ClassLoader	_loader
protected Map	_nameMap
protected PathMap	_servletMap
protected SessionManager	_sessionManager

Constructor Summary

Constructors

Constructor and Description
ServletHandler() Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
ServletHolder	addServlet(String pathSpec, String servletClass) Add a servlet instance to this handler and map it to a pathspec.
ServletHolder	addServlet(String name, String pathSpec, String servletClass) Add a servlet.
ServletHolder	addServlet(String name, String pathSpec, String servletClass, String forcedPath) Add a servlet.
void	addServletHolder(ServletHolder holder) Register an existing ServletHolder with this handler.
void	destroy() Destroy a stopped server.
protected void	dispatch(String pathInContext, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, ServletHolder servletHolder, int type) Dispatch to a servletHolder.
protected void	doStart() Do start operations.
protected void	doStop() Do stop operations.
protected void	finalize()
void	formAuthInit(String formLoginPage, String formErrorPage)
ClassLoader	getClassLoader()
protected Object	getContextAttribute(String name) Get context attribute.
protected Enumeration	getContextAttributeNames() Get context attribute names.
String	getErrorPage(int status, ServletHttpRequest request)
Map.Entry	getHolderEntry(String pathInContext) ServletHolder matching path.
HttpContext	getHttpContext()
javax.servlet.http.HttpSession	getHttpSession(String id)
String	getName() Get the name of the handler.
javax.servlet.RequestDispatcher	getNamedDispatcher(String name) Get Named dispatcher.
String	getRealPath(String path)
javax.servlet.RequestDispatcher	getRequestDispatcher(String uriInContext)
URL	getResource(String uriInContext) Get a Resource.
InputStream	getResourceAsStream(String uriInContext)
Set	getResourcePaths(String uriInContext)
javax.servlet.ServletContext	getServletContext()
ServletHolder	getServletHolder(String name)
PathMap	getServletMap()
ServletHolder[]	getServlets() Get Servlets.
SessionManager	getSessionManager()
void	handle(String pathInContext, String pathParams, HttpRequest httpRequest, HttpResponse httpResponse) Handle request.
protected void	handleOptions(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
void	handleTrace(HttpRequest request, HttpResponse response)
protected void	handleTrace(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
void	initialize(HttpContext context)
void	initializeServlets() Initialize load-on-startup servlets.
boolean	isAutoInitializeServlets()
boolean	isUsingCookies()
ServletHolder	mapPathToServlet(String pathSpec, String servletName) Map a servlet to a pathSpec
javax.servlet.http.HttpSession	newHttpSession(javax.servlet.http.HttpServletRequest request)
ServletHolder	newServletHolder(String name, String servletClass)
ServletHolder	newServletHolder(String name, String servletClass, String forcedPath)
protected void	notFound(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
protected void	removeContextAttribute(String name)
void	setAutoInitializeServlets(boolean b)
protected void	setContextAttribute(String name, Object value)
void	setDynamicInitParams(Map initParams) Deprecated. Use org.openqa.jetty.jetty.servlet.Invoker
void	setDynamicServletPathSpec(String dynamicServletPathSpec) Deprecated. Use org.openqa.jetty.jetty.servlet.Invoker
void	setName(String name)
void	setServeDynamicSystemServlets(boolean b) Deprecated. Use org.openqa.jetty.jetty.servlet.Invoker
void	setSessionInactiveInterval(int seconds) Set the session timeout interval in seconds.
void	setSessionManager(SessionManager sm)
void	setUsingCookies(boolean uc)

Methods inherited from class org.openqa.jetty.util.Container

addComponent, addEventListener, getComponents, isStarted, isStarting, isStopping, removeComponent, removeEventListener, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openqa.jetty.util.LifeCycle

isStarted, start, stop

Field Detail

__DEFAULT_SERVLET

public static final String __DEFAULT_SERVLET

See Also:

Constant Field Values

__J_S_CONTEXT_TEMPDIR

public static final String __J_S_CONTEXT_TEMPDIR

See Also:

Constant Field Values

__J_S_ERROR_EXCEPTION

public static final String __J_S_ERROR_EXCEPTION

See Also:

Constant Field Values

__J_S_ERROR_EXCEPTION_TYPE

public static final String __J_S_ERROR_EXCEPTION_TYPE

See Also:

Constant Field Values

__J_S_ERROR_MESSAGE

public static final String __J_S_ERROR_MESSAGE

See Also:

Constant Field Values

__J_S_ERROR_REQUEST_URI

public static final String __J_S_ERROR_REQUEST_URI

See Also:

Constant Field Values

__J_S_ERROR_SERVLET_NAME

public static final String __J_S_ERROR_SERVLET_NAME

See Also:

Constant Field Values

__J_S_ERROR_STATUS_CODE

public static final String __J_S_ERROR_STATUS_CODE

See Also:

Constant Field Values

_servletMap

protected PathMap _servletMap

_nameMap

protected Map _nameMap

_attributes

protected Map _attributes

_formLoginPage

protected String _formLoginPage

_formErrorPage

protected String _formErrorPage

_sessionManager

protected SessionManager _sessionManager

_context

protected transient org.openqa.jetty.jetty.servlet.ServletHandler.Context _context

_loader

protected transient ClassLoader _loader

_contextLog

protected transient org.apache.commons.logging.Log _contextLog

_httpContext

protected transient HttpContext _httpContext

Constructor Detail

ServletHandler

public ServletHandler()

Constructor.

Method Detail

setName

public void setName(String name)

getName

public String getName()

Description copied from interface: HttpHandler

Get the name of the handler.

Specified by:

getName in interface HttpHandler

Returns:

The name of the handler used for logging and reporting.

getHttpContext

public HttpContext getHttpContext()

Specified by:

getHttpContext in interface HttpHandler

initialize

public void initialize(HttpContext context)

Specified by:

initialize in interface HttpHandler

formAuthInit

public void formAuthInit(String formLoginPage,
                String formErrorPage)

setSessionManager

public void setSessionManager(SessionManager sm)

getSessionManager

public SessionManager getSessionManager()

getServletContext

public javax.servlet.ServletContext getServletContext()

getServletMap

public PathMap getServletMap()

isUsingCookies

public boolean isUsingCookies()

setDynamicServletPathSpec

public void setDynamicServletPathSpec(String dynamicServletPathSpec)

Deprecated. Use org.openqa.jetty.jetty.servlet.Invoker

Set the dynamic servlet path.

setDynamicInitParams

public void setDynamicInitParams(Map initParams)

Deprecated. Use org.openqa.jetty.jetty.servlet.Invoker

Set dynamic servlet initial parameters.

setServeDynamicSystemServlets

public void setServeDynamicSystemServlets(boolean b)

Deprecated. Use org.openqa.jetty.jetty.servlet.Invoker

Set serving dynamic system servlets.

getClassLoader

public ClassLoader getClassLoader()

setUsingCookies

public void setUsingCookies(boolean uc)

Parameters:

uc - If true, cookies are used for sessions

newServletHolder

public ServletHolder newServletHolder(String name,
                             String servletClass,
                             String forcedPath)

newServletHolder

public ServletHolder newServletHolder(String name,
                             String servletClass)

getServletHolder

public ServletHolder getServletHolder(String name)

mapPathToServlet

public ServletHolder mapPathToServlet(String pathSpec,
                             String servletName)

Map a servlet to a pathSpec

Parameters:

pathSpec - The pathspec to map

servletName - The name of the servlet, which must have already been added.

Returns:

The servlet holder of the mapped servlet.

addServlet

public ServletHolder addServlet(String name,
                       String pathSpec,
                       String servletClass,
                       String forcedPath)

Add a servlet.

Parameters:

name - The servlet name.

pathSpec - A path specification to map this servlet to.

servletClass - The class name of the servlet.

forcedPath - If non null, the request attribute javax.servlet.include.servlet_path will be set to this path before service is called.

Returns:

The ServletHolder for the servlet.

addServlet

public ServletHolder addServlet(String name,
                       String pathSpec,
                       String servletClass)

Add a servlet.

Parameters:

name - The servlet name.

pathSpec - A path specification to map this servlet to.

servletClass - The class name of the servlet.

Returns:

The ServletHolder for the servlet.

addServlet

public ServletHolder addServlet(String pathSpec,
                       String servletClass)

Add a servlet instance to this handler and map it to a pathspec.

Parameters:

pathSpec - The pathmapping

servletClass - The class of the servlet

Returns:

The created ServletHolder

addServletHolder

public void addServletHolder(ServletHolder holder)

Register an existing ServletHolder with this handler.

Parameters:

holder - the ServletHolder to register.

isAutoInitializeServlets

public boolean isAutoInitializeServlets()

setAutoInitializeServlets

public void setAutoInitializeServlets(boolean b)

doStart

protected void doStart()
                throws Exception

Description copied from class: Container

Do start operations. This abstract method is called by start to perform the actual start operations.

Specified by:

doStart in class Container

Throws:

Exception

getServlets

public ServletHolder[] getServlets()

Get Servlets.

Returns:

Array of defined servlets

initializeServlets

public void initializeServlets()
                        throws Exception

Initialize load-on-startup servlets. Called automatically from start if autoInitializeServlet is true.

Throws:

Exception

doStop

protected void doStop()
               throws Exception

Description copied from class: Container

Do stop operations. This abstract method is called by stop to perform the actual stop operations.

Specified by:

doStop in class Container

Throws:

Exception

getHttpSession

public javax.servlet.http.HttpSession getHttpSession(String id)

newHttpSession

public javax.servlet.http.HttpSession newHttpSession(javax.servlet.http.HttpServletRequest request)

setSessionInactiveInterval

public void setSessionInactiveInterval(int seconds)

Set the session timeout interval in seconds.

Parameters:

seconds - the length of the session timeout interval in seconds.

handle

public void handle(String pathInContext,
          String pathParams,
          HttpRequest httpRequest,
          HttpResponse httpResponse)
            throws IOException

Handle request.

Specified by:

handle in interface HttpHandler

Parameters:

pathInContext -

pathParams -

httpRequest -

httpResponse -

Throws:

IOException

dispatch

protected void dispatch(String pathInContext,
            javax.servlet.http.HttpServletRequest request,
            javax.servlet.http.HttpServletResponse response,
            ServletHolder servletHolder,
            int type)
                 throws javax.servlet.ServletException,
                        javax.servlet.UnavailableException,
                        IOException

Dispatch to a servletHolder. This method may be specialized to insert extra handling in the dispatch of a request to a specific servlet. This is used by WebApplicatonHandler to implement dispatched filters. The default implementation simply calls ServletHolder.handle(request,response)

Parameters:

pathInContext - The path used to select the servlet holder.

request -

response -

servletHolder -

type - the type of dispatch as defined in the Dispatcher class.

Throws:

javax.servlet.ServletException

javax.servlet.UnavailableException

IOException

getHolderEntry

public Map.Entry getHolderEntry(String pathInContext)

ServletHolder matching path.

Parameters:

pathInContext - Path within context.

Returns:

PathMap Entries pathspec to ServletHolder

getResourcePaths

public Set getResourcePaths(String uriInContext)

getResource

public URL getResource(String uriInContext)
                throws MalformedURLException

Get a Resource. If no resource is found, resource aliases are tried.

Parameters:

uriInContext -

Returns:

URL of the resource.

Throws:

MalformedURLException

getResourceAsStream

public InputStream getResourceAsStream(String uriInContext)

getRealPath

public String getRealPath(String path)

getRequestDispatcher

public javax.servlet.RequestDispatcher getRequestDispatcher(String uriInContext)

getNamedDispatcher

public javax.servlet.RequestDispatcher getNamedDispatcher(String name)

Get Named dispatcher.

Parameters:

name - The name of the servlet. If null or empty string, the containers default servlet is returned.

Returns:

Request dispatcher for the named servlet.

notFound

protected void notFound(javax.servlet.http.HttpServletRequest request,
            javax.servlet.http.HttpServletResponse response)
                 throws IOException

Throws:

IOException

handleTrace

protected void handleTrace(javax.servlet.http.HttpServletRequest request,
               javax.servlet.http.HttpServletResponse response)
                    throws IOException

Throws:

IOException

handleOptions

protected void handleOptions(javax.servlet.http.HttpServletRequest request,
                 javax.servlet.http.HttpServletResponse response)
                      throws IOException

Throws:

IOException

getErrorPage

public String getErrorPage(int status,
                  ServletHttpRequest request)

getContextAttribute

protected Object getContextAttribute(String name)

Get context attribute. Tries ServletHandler attributes and then delegated to HttpContext.

Parameters:

name - attribute name.

Returns:

attribute

getContextAttributeNames

protected Enumeration getContextAttributeNames()

Get context attribute names. Combines ServletHandler and HttpContext attributes.

setContextAttribute

protected void setContextAttribute(String name,
                       Object value)

removeContextAttribute

protected void removeContextAttribute(String name)

handleTrace

public void handleTrace(HttpRequest request,
               HttpResponse response)
                 throws IOException

Throws:

IOException

destroy

public void destroy()

Description copied from class: Container

Destroy a stopped server. Remove all components and send notifications to all event listeners. The HttpServer must be stopped before it can be destroyed.

Overrides:

destroy in class Container

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable