ActionContext (Struts 2 Core 6.7.0 API)

java.lang.Object
- org.apache.struts2.ActionContext

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ActionContext
```
public class ActionContext
extends Object
implements Serializable
```
The ActionContext is the context in which an Action is executed. Each context is basically a container of objects an action needs for execution like the session, parameters, locale, etc.

The ActionContext is thread local which means that values stored in the ActionContext are unique per thread. See the ThreadLocal class for more information. The benefit of this is you don't need to worry about a user specific action context, you just get it:
ActionContext context = ActionContext.getContext();
Finally, because of the thread local usage you don't need to worry about making your actions thread safe.

Author:

Patrick Lightbody, Bill Lynch (docs)

See Also:

Serialized Form

Constructor Summary

Constructors
Modifier Constructor and Description

protected ActionContext(Map<String,Object> context)
Creates a new ActionContext initialized with another context.

Constructors
Modifier	Constructor and Description
`protected`	`ActionContext(Map<String,Object> context)` Creates a new ActionContext initialized with another context.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`ActionContext`	`bind()` Binds this context with the current thread
`static ActionContext`	`bind(ActionContext actionContext)` Binds the provided context with the current thread
`static void`	`clear()` Wipes out current ActionContext, use wisely!
`static boolean`	`containsValueStack(Map<String,Object> context)`
`boolean`	`equals(Object obj)`
`Object`	`get(String key)` Returns a value that is stored in the current ActionContext by doing a lookup using the value's key.
`ActionInvocation`	`getActionInvocation()` Gets the action invocation (the execution state).
`ActionMapping`	`getActionMapping()` Gets ActionMapping associated with current action
`String`	`getActionName()` Gets the name of the current Action.
`Map<String,Object>`	`getApplication()` Returns a Map of the ServletContext when in a servlet environment or a generic application level Map otherwise.
`Container`	`getContainer()` Sets the container for this request
`static ActionContext`	`getContext()` Returns the ActionContext specific to the current thread.
`Map<String,Object>`	`getContextMap()` Gets the context map.
`Map<String,ConversionData>`	`getConversionErrors()` Gets the map of conversion errors which occurred when executing the action.
`<T> T`	`getInstance(Class<T> type)`
`Locale`	`getLocale()` Gets the Locale of the current action.
`javax.servlet.jsp.PageContext`	`getPageContext()` Gets PageContext associated with current action
`HttpParameters`	`getParameters()` Returns a Map of the HttpServletRequest parameters when in a servlet environment or a generic Map of parameters otherwise.
`javax.servlet.ServletContext`	`getServletContext()` Gets ServletContext associated with current action
`javax.servlet.http.HttpServletRequest`	`getServletRequest()` Gets ServletRequest associated with current action
`javax.servlet.http.HttpServletResponse`	`getServletResponse()` Gets ServletResponse associated with current action
`Map<String,Object>`	`getSession()` Gets the Map of HttpSession values when in a servlet environment or a generic session map otherwise.
`ValueStack`	`getValueStack()` Gets the OGNL value stack.
`int`	`hashCode()`
`static ActionContext`	`of()` Creates a new ActionContext based on empty Map
`static ActionContext`	`of(Map<String,Object> context)` Creates a new ActionContext based on passed in Map
`void`	`put(String key, Object value)` Stores a value in the current ActionContext.
`ActionContext`	`with(String key, Object value)` Adds arbitrary key to action context
`ActionContext`	`withActionInvocation(ActionInvocation actionInvocation)` Sets the action invocation (the execution state).
`ActionContext`	`withActionMapping(ActionMapping actionMapping)` Assigns ActionMapping to action context
`ActionContext`	`withActionName(String actionName)` Sets the name of the current Action in the ActionContext.
`ActionContext`	`withApplication(Map<String,Object> application)` Sets the action's application context.
`ActionContext`	`withContainer(Container container)` Gets the container for this request
`ActionContext`	`withConversionErrors(Map<String,ConversionData> conversionErrors)` Sets conversion errors which occurred when executing the action.
`ActionContext`	`withExtraContext(Map<String,Object> extraContext)` Assigns an extra context map to action context
`ActionContext`	`withLocale(Locale locale)` Sets the Locale for the current action.
`ActionContext`	`withPageContext(javax.servlet.jsp.PageContext pageContext)` Assigns PageContext to action context
`ActionContext`	`withParameters(HttpParameters parameters)` Sets the action parameters.
`ActionContext`	`withServletContext(javax.servlet.ServletContext servletContext)` Assigns ServletContext to action context
`ActionContext`	`withServletRequest(javax.servlet.http.HttpServletRequest request)` Assigns ServletRequest to action context
`ActionContext`	`withServletResponse(javax.servlet.http.HttpServletResponse response)` Assigns ServletResponse to action context
`ActionContext`	`withSession(Map<String,Object> session)` Sets a map of action session values.
`ActionContext`	`withValueStack(ValueStack valueStack)` Sets the OGNL value stack.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ActionContext
```
protected ActionContext(Map<String,Object> context)
```
    Creates a new ActionContext initialized with another context.
    
    Parameters:
    
    context - a context map.
- Method Detail
  - of
```
public static ActionContext of(Map<String,Object> context)
```
    Creates a new ActionContext based on passed in Map
    
    Parameters:
    
    context - a map with context values
    
    Returns:
    
    new ActionContext
  - of
```
public static ActionContext of()
```
    Creates a new ActionContext based on empty Map
    
    Returns:
    
    new ActionContext
  - bind
```
public static ActionContext bind(ActionContext actionContext)
```
    Binds the provided context with the current thread
    
    Parameters:
    
    actionContext - context to bind to the thread
    
    Returns:
    
    context which was bound to the thread
  - containsValueStack
```
public static boolean containsValueStack(Map<String,Object> context)
```
  - bind
```
public ActionContext bind()
```
    Binds this context with the current thread
    
    Returns:
    
    this context which was bound to the thread
  - clear
```
public static void clear()
```
    Wipes out current ActionContext, use wisely!
  - getContext
```
public static ActionContext getContext()
```
    Returns the ActionContext specific to the current thread.
    
    Returns:
    
    the ActionContext for the current thread, is never null.
  - withActionInvocation
```
public ActionContext withActionInvocation(ActionInvocation actionInvocation)
```
    Sets the action invocation (the execution state).
    
    Parameters:
    
    actionInvocation - the action execution state.
  - getActionInvocation
```
public ActionInvocation getActionInvocation()
```
    Gets the action invocation (the execution state).
    
    Returns:
    
    the action invocation (the execution state).
  - withApplication
```
public ActionContext withApplication(Map<String,Object> application)
```
    Sets the action's application context.
    
    Parameters:
    
    application - the action's application context.
  - getApplication
```
public Map<String,Object> getApplication()
```
    Returns a Map of the ServletContext when in a servlet environment or a generic application level Map otherwise.
    
    Returns:
    
    a Map of ServletContext or generic application level Map
  - getContextMap
```
public Map<String,Object> getContextMap()
```
    Gets the context map.
    
    Returns:
    
    the context map.
  - withConversionErrors
```
public ActionContext withConversionErrors(Map<String,ConversionData> conversionErrors)
```
    Sets conversion errors which occurred when executing the action.
    
    Parameters:
    
    conversionErrors - a Map of errors which occurred when executing the action.
  - getConversionErrors
```
public Map<String,ConversionData> getConversionErrors()
```
    Gets the map of conversion errors which occurred when executing the action.
    
    Returns:
    
    the map of conversion errors which occurred when executing the action or an empty map if there were no errors.
  - withLocale
```
public ActionContext withLocale(Locale locale)
```
    Sets the Locale for the current action.
    
    Parameters:
    
    locale - the Locale for the current action.
  - getLocale
```
public Locale getLocale()
```
    Gets the Locale of the current action. If no locale was ever specified the platform's default locale is used.
    
    Returns:
    
    the Locale of the current action.
  - withActionName
```
public ActionContext withActionName(String actionName)
```
    Sets the name of the current Action in the ActionContext.
    
    Parameters:
    
    actionName - the name of the current action.
  - getActionName
```
public String getActionName()
```
    Gets the name of the current Action.
    
    Returns:
    
    the name of the current action.
  - withParameters
```
public ActionContext withParameters(HttpParameters parameters)
```
    Sets the action parameters.
    
    Parameters:
    
    parameters - the parameters for the current action.
  - getParameters
```
public HttpParameters getParameters()
```
    Returns a Map of the HttpServletRequest parameters when in a servlet environment or a generic Map of parameters otherwise.
    
    Returns:
    
    a Map of HttpServletRequest parameters or a multipart map when in a servlet environment, or a generic Map of parameters otherwise.
  - withSession
```
public ActionContext withSession(Map<String,Object> session)
```
    Sets a map of action session values.
    
    Parameters:
    
    session - the session values.
  - getSession
```
public Map<String,Object> getSession()
```
    Gets the Map of HttpSession values when in a servlet environment or a generic session map otherwise.
    
    Returns:
    
    the Map of HttpSession values when in a servlet environment or a generic session map otherwise.
  - withValueStack
```
public ActionContext withValueStack(ValueStack valueStack)
```
    Sets the OGNL value stack.
    
    Parameters:
    
    valueStack - the OGNL value stack.
  - getValueStack
```
public ValueStack getValueStack()
```
    Gets the OGNL value stack.
    
    Returns:
    
    the OGNL value stack.
  - withContainer
```
public ActionContext withContainer(Container container)
```
    Gets the container for this request
    
    Parameters:
    
    container - The container
  - getContainer
```
public Container getContainer()
```
    Sets the container for this request
    
    Returns:
    
    The container
  - getInstance
```
public <T> T getInstance(Class<T> type)
```
  - get
```
public Object get(String key)
```
    Returns a value that is stored in the current ActionContext by doing a lookup using the value's key.
    
    Parameters:
    
    key - the key used to find the value.
    
    Returns:
    
    the value that was found using the key or null if the key was not found.
  - put
```
public void put(String key,
                Object value)
```
    Stores a value in the current ActionContext. The value can be looked up using the key.
    
    Parameters:
    
    key - the key of the value.
    
    value - the value to be stored.
  - getServletContext
```
public javax.servlet.ServletContext getServletContext()
```
    Gets ServletContext associated with current action
    
    Returns:
    
    current ServletContext
  - withServletContext
```
public ActionContext withServletContext(javax.servlet.ServletContext servletContext)
```
    Assigns ServletContext to action context
    
    Parameters:
    
    servletContext - associated with current request
    
    Returns:
    
    ActionContext
  - getServletRequest
```
public javax.servlet.http.HttpServletRequest getServletRequest()
```
    Gets ServletRequest associated with current action
    
    Returns:
    
    current ServletRequest
  - withServletRequest
```
public ActionContext withServletRequest(javax.servlet.http.HttpServletRequest request)
```
    Assigns ServletRequest to action context
    
    Parameters:
    
    request - associated with current request
    
    Returns:
    
    ActionContext
  - getServletResponse
```
public javax.servlet.http.HttpServletResponse getServletResponse()
```
    Gets ServletResponse associated with current action
    
    Returns:
    
    current ServletResponse
  - withServletResponse
```
public ActionContext withServletResponse(javax.servlet.http.HttpServletResponse response)
```
    Assigns ServletResponse to action context
    
    Parameters:
    
    response - associated with current request
    
    Returns:
    
    ActionContext
  - getPageContext
```
public javax.servlet.jsp.PageContext getPageContext()
```
    Gets PageContext associated with current action
    
    Returns:
    
    current PageContext
  - withPageContext
```
public ActionContext withPageContext(javax.servlet.jsp.PageContext pageContext)
```
    Assigns PageContext to action context
    
    Parameters:
    
    pageContext - associated with current request
    
    Returns:
    
    ActionContext
  - getActionMapping
```
public ActionMapping getActionMapping()
```
    Gets ActionMapping associated with current action
    
    Returns:
    
    current ActionMapping
  - withActionMapping
```
public ActionContext withActionMapping(ActionMapping actionMapping)
```
    Assigns ActionMapping to action context
    
    Parameters:
    
    actionMapping - associated with current request
    
    Returns:
    
    ActionContext
  - withExtraContext
```
public ActionContext withExtraContext(Map<String,Object> extraContext)
```
    Assigns an extra context map to action context
    
    Parameters:
    
    extraContext - to add to the current action context
    
    Returns:
    
    ActionContext
  - with
```
public ActionContext with(String key,
                          Object value)
```
    Adds arbitrary key to action context
    
    Parameters:
    
    key - a string
    
    value - an object
    
    Returns:
    
    ActionContext
  - equals
```
public final boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public final int hashCode()
```
    Overrides:
    
    hashCode in class Object

Class ActionContext

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ActionContext

Method Detail

of

of

bind

containsValueStack

bind

clear

getContext

withActionInvocation

getActionInvocation

withApplication

getApplication

getContextMap

withConversionErrors

getConversionErrors

withLocale

getLocale

withActionName

getActionName

withParameters

getParameters

withSession

getSession

withValueStack

getValueStack

withContainer

getContainer

getInstance

get

put

getServletContext

withServletContext

getServletRequest

withServletRequest

getServletResponse

withServletResponse

getPageContext

withPageContext

getActionMapping

withActionMapping

withExtraContext

with

equals

hashCode