org.eclipse.jetty.server.handler

Class ErrorHandler

java.lang.Object

org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.component.ContainerLifeCycle

org.eclipse.jetty.server.handler.AbstractHandler

org.eclipse.jetty.server.handler.ErrorHandler

All Implemented Interfaces:

Handler, Container, Destroyable, Dumpable, LifeCycle

Direct Known Subclasses:

ErrorPageErrorHandler

public class ErrorHandler
extends AbstractHandler

Handler for Error pages An ErrorHandler is registered with ContextHandler.setErrorHandler(ErrorHandler) or ContainerLifeCycle.addBean(Object). It is called by the HttpResponse.sendError method to write a error page via handle(String, Request, HttpServletRequest, HttpServletResponse) or via badMessageError(int, String, HttpFields) for bad requests for which a dispatch cannot be done.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ErrorHandler.ErrorPageMapper

Nested classes/interfaces inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

AbstractLifeCycle.AbstractLifeCycleListener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.LifeCycle

LifeCycle.Listener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.Container

Container.InheritedListener, Container.Listener

Field Summary

Fields

Modifier and Type	Field and Description
static String	ERROR_PAGE

Fields inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

FAILED, RUNNING, STARTED, STARTING, STOPPED, STOPPING

Constructor Summary

Constructors

Constructor and Description
ErrorHandler()

Method Summary

Methods

Modifier and Type	Method and Description
ByteBuffer	badMessageError(int status, String reason, HttpFields fields) Bad Message Error body
String	getCacheControl() Get the cacheControl.
static ErrorHandler	getErrorHandler(Server server, ContextHandler context)
boolean	getShowMessageInTitle()
void	handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) Handle a request.
protected void	handleErrorPage(HttpServletRequest request, Writer writer, int code, String message)
boolean	isShowStacks()
void	setCacheControl(String cacheControl) Set the cacheControl.
void	setShowMessageInTitle(boolean showMessageInTitle)
void	setShowStacks(boolean showStacks)
protected void	write(Writer writer, String string)
protected void	writeErrorPage(HttpServletRequest request, Writer writer, int code, String message, boolean showStacks)
protected void	writeErrorPageBody(HttpServletRequest request, Writer writer, int code, String message, boolean showStacks)
protected void	writeErrorPageHead(HttpServletRequest request, Writer writer, int code, String message)
protected void	writeErrorPageMessage(HttpServletRequest request, Writer writer, int code, String message, String uri)
protected void	writeErrorPageStacks(HttpServletRequest request, Writer writer)

Methods inherited from class org.eclipse.jetty.server.handler.AbstractHandler

destroy, doStart, doStop, dumpThis, getServer, setServer

Methods inherited from class org.eclipse.jetty.util.component.ContainerLifeCycle

addBean, addBean, addBean, addEventListener, addManaged, contains, dump, dump, dump, dump, dump, dumpBeans, dumpObject, dumpStdErr, getBean, getBeans, getBeans, isManaged, manage, removeBean, removeBeans, removeEventListener, setBeans, setStopTimeout, start, stop, unmanage, updateBean, updateBeans

Methods inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

addLifeCycleListener, getState, getState, getStopTimeout, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.jetty.util.component.LifeCycle

addLifeCycleListener, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, start, stop

Field Detail

ERROR_PAGE

public static final String ERROR_PAGE

See Also:

Constant Field Values

Constructor Detail

ErrorHandler

public ErrorHandler()

Method Detail

handle

public void handle(String target,
          Request baseRequest,
          HttpServletRequest request,
          HttpServletResponse response)
            throws IOException

Description copied from interface: Handler

Handle a request.

Parameters:

target - The target of the request - either a URI or a name.

baseRequest - The original unwrapped request object.

request - The request either as the Request object or a wrapper of that request. The HttpChannel.getCurrentHttpChannel() method can be used access the Request object if required.

response - The response as the Response object or a wrapper of that request. The HttpChannel.getCurrentHttpChannel() method can be used access the Response object if required.

Throws:

IOException

handleErrorPage

protected void handleErrorPage(HttpServletRequest request,
                   Writer writer,
                   int code,
                   String message)
                        throws IOException

Throws:

IOException

writeErrorPage

protected void writeErrorPage(HttpServletRequest request,
                  Writer writer,
                  int code,
                  String message,
                  boolean showStacks)
                       throws IOException

Throws:

IOException

writeErrorPageHead

protected void writeErrorPageHead(HttpServletRequest request,
                      Writer writer,
                      int code,
                      String message)
                           throws IOException

Throws:

IOException

writeErrorPageBody

protected void writeErrorPageBody(HttpServletRequest request,
                      Writer writer,
                      int code,
                      String message,
                      boolean showStacks)
                           throws IOException

Throws:

IOException

writeErrorPageMessage

protected void writeErrorPageMessage(HttpServletRequest request,
                         Writer writer,
                         int code,
                         String message,
                         String uri)
                              throws IOException

Throws:

IOException

writeErrorPageStacks

protected void writeErrorPageStacks(HttpServletRequest request,
                        Writer writer)
                             throws IOException

Throws:

IOException

badMessageError

public ByteBuffer badMessageError(int status,
                         String reason,
                         HttpFields fields)

Bad Message Error body

Generate a error response body to be sent for a bad message. In this case there is something wrong with the request, so either a request cannot be built, or it is not safe to build a request. This method allows for a simple error page body to be returned and some response headers to be set.

Parameters:

status - The error code that will be sent

reason - The reason for the error code (may be null)

fields - The header fields that will be sent with the response.

Returns:

The content as a ByteBuffer, or null for no body.

getCacheControl

public String getCacheControl()

Get the cacheControl.

Returns:

the cacheControl header to set on error responses.

setCacheControl

public void setCacheControl(String cacheControl)

Set the cacheControl.

Parameters:

cacheControl - the cacheControl header to set on error responses.

isShowStacks

public boolean isShowStacks()

Returns:

True if stack traces are shown in the error pages

setShowStacks

public void setShowStacks(boolean showStacks)

Parameters:

showStacks - True if stack traces are shown in the error pages

setShowMessageInTitle

public void setShowMessageInTitle(boolean showMessageInTitle)

Parameters:

showMessageInTitle - if true, the error message appears in page title

getShowMessageInTitle

public boolean getShowMessageInTitle()

write

protected void write(Writer writer,
         String string)
              throws IOException

Throws:

IOException

getErrorHandler

public static ErrorHandler getErrorHandler(Server server,
                           ContextHandler context)