org.springframework.web.context.request

Class RequestContextHolder

java.lang.Object

org.springframework.web.context.request.RequestContextHolder

public abstract class RequestContextHolder
extends java.lang.Object

Holder class to expose the web request in the form of a thread-bound RequestAttributes object. The request will be inherited by any child threads spawned by the current thread if the inheritable flag is set to true.

Use RequestContextListener or RequestContextFilter to expose the current web request. Note that DispatcherServlet and DispatcherPortlet already expose the current request by default.

Since:

2.0

Author:

Juergen Hoeller, Rod Johnson

See Also:

RequestContextListener, RequestContextFilter, DispatcherServlet, DispatcherPortlet

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	RequestContextHolder.FacesRequestAttributesFactory Inner class to avoid hard-coded JSF dependency.

Field Summary

Fields

Modifier and Type	Field and Description
private static java.lang.ThreadLocal<RequestAttributes>	inheritableRequestAttributesHolder
private static boolean	jsfPresent
private static java.lang.ThreadLocal<RequestAttributes>	requestAttributesHolder

Constructor Summary

Constructors

Constructor and Description
RequestContextHolder()

Method Summary

Methods

Modifier and Type	Method and Description
static RequestAttributes	currentRequestAttributes() Return the RequestAttributes currently bound to the thread.
static RequestAttributes	getRequestAttributes() Return the RequestAttributes currently bound to the thread.
static void	resetRequestAttributes() Reset the RequestAttributes for the current thread.
static void	setRequestAttributes(RequestAttributes attributes) Bind the given RequestAttributes to the current thread, not exposing it as inheritable for child threads.
static void	setRequestAttributes(RequestAttributes attributes, boolean inheritable) Bind the given RequestAttributes to the current thread.

Methods inherited from class java.lang.Object

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

Field Detail

jsfPresent

private static final boolean jsfPresent

requestAttributesHolder

private static final java.lang.ThreadLocal<RequestAttributes> requestAttributesHolder

inheritableRequestAttributesHolder

private static final java.lang.ThreadLocal<RequestAttributes> inheritableRequestAttributesHolder

Constructor Detail

RequestContextHolder

public RequestContextHolder()

Method Detail

resetRequestAttributes

public static void resetRequestAttributes()

Reset the RequestAttributes for the current thread.

setRequestAttributes

public static void setRequestAttributes(RequestAttributes attributes)

Bind the given RequestAttributes to the current thread, not exposing it as inheritable for child threads.

Parameters:

attributes - the RequestAttributes to expose

See Also:

setRequestAttributes(RequestAttributes, boolean)

setRequestAttributes

public static void setRequestAttributes(RequestAttributes attributes,
                        boolean inheritable)

Bind the given RequestAttributes to the current thread.

Parameters:

attributes - the RequestAttributes to expose, or null to reset the thread-bound context

inheritable - whether to expose the RequestAttributes as inheritable for child threads (using an InheritableThreadLocal)

getRequestAttributes

public static RequestAttributes getRequestAttributes()

Return the RequestAttributes currently bound to the thread.

Returns:

the RequestAttributes currently bound to the thread, or null if none bound

currentRequestAttributes

public static RequestAttributes currentRequestAttributes()
                                                  throws java.lang.IllegalStateException

Return the RequestAttributes currently bound to the thread.

Exposes the previously bound RequestAttributes instance, if any. Falls back to the current JSF FacesContext, if any.

Returns:

the RequestAttributes currently bound to the thread

Throws:

java.lang.IllegalStateException - if no RequestAttributes object is bound to the current thread

See Also:

setRequestAttributes(org.springframework.web.context.request.RequestAttributes), ServletRequestAttributes, FacesRequestAttributes, javax.faces.context.FacesContext#getCurrentInstance()