org.apache.struts2.components
类 ActionComponent

java.lang.Object
  org.apache.struts2.components.Component
      org.apache.struts2.components.ContextBean
          org.apache.struts2.components.ActionComponent

public class ActionComponent
extends ContextBean

This tag enables developers to call actions directly from a JSP page by specifying the action name and an optional namespace. The body content of the tag is used to render the results from the Action. Any result processor defined for this action in struts.xml will be ignored, unless the executeResult parameter is specified.

• id (String) - the id (if specified) to put the action under stack's context.
• name* (String) - name of the action to be executed (without the extension suffix eg. .action)
• namespace (String) - default to the namespace where this action tag is invoked
• executeResult (Boolean) - default is false. Decides whether the result of this action is to be executed or not
• ignoreContextParams (Boolean) - default to false. Decides whether the request parameters are to be included when the action is invoked

 
 public class ActionTagAction extends ActionSupport {

  public String execute() throws Exception {
      return "done";
  }

  public String doDefault() throws Exception {
      ServletActionContext.getRequest().setAttribute("stringByAction", "This is a String put in by the action's doDefault()");
      return "done";
  }
 }
 
 

 
   
      ....
     
         success.jsp
     
      
         success.jsp
     
      ....
   
 
 

 
  
The following action tag will execute result and include it in this page
  

  
  

  
The following action tag will do the same as above, but invokes method specialMethod in action
  

  
  

  
The following action tag will not execute result, but put a String in request scope
       under an id "stringByAction" which will be retrieved using property tag
  
  
 
 

字段摘要

从类 org.apache.struts2.components.Component 继承的字段

COMPONENT_STACK

构造方法摘要

ActionComponent(com.opensymphony.xwork2.util.ValueStack stack, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res)

方法摘要

boolean	end(Writer writer, String body) Callback for the end tag of this component.
com.opensymphony.xwork2.ActionProxy	getProxy()
void	setActionMapper(ActionMapper mapper)
void	setActionProxyFactory(com.opensymphony.xwork2.ActionProxyFactory actionProxyFactory)
void	setExecuteResult(boolean executeResult)
void	setFlush(boolean flush)
void	setIgnoreContextParams(boolean ignoreContextParams)
void	setName(String name)
void	setNamespace(String namespace)
void	setRethrowException(boolean rethrowException)
void	setValueStackFactory(com.opensymphony.xwork2.util.ValueStackFactory valueStackFactory)

从类 org.apache.struts2.components.ContextBean 继承的方法

setId, setVar

从类 org.apache.struts2.components.Component 继承的方法

addAllParameters, addParameter, altSyntax, copyParams, getComponentStack, getParameters, getStack, setThrowExceptionsOnELFailure, setUrlHelper, start, usesBody

从类 java.lang.Object 继承的方法

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

构造方法详细信息

ActionComponent

public ActionComponent(com.opensymphony.xwork2.util.ValueStack stack,
                       javax.servlet.http.HttpServletRequest req,
                       javax.servlet.http.HttpServletResponse res)

方法详细信息

setActionProxyFactory

public void setActionProxyFactory(com.opensymphony.xwork2.ActionProxyFactory actionProxyFactory)

参数：

actionProxyFactory - the actionProxyFactory to set

setValueStackFactory

public void setValueStackFactory(com.opensymphony.xwork2.util.ValueStackFactory valueStackFactory)

setActionMapper

public void setActionMapper(ActionMapper mapper)

覆盖：

类 Component 中的 setActionMapper

end

public boolean end(Writer writer,
                   String body)

从类 Component 复制的描述

Callback for the end tag of this component. Should the body be evaluated again?

NOTE: will pop component stack.

覆盖：

类 Component 中的 end

参数：

writer - the output writer.

body - the rendered body.

返回：

true if the body should be evaluated again

getProxy

public com.opensymphony.xwork2.ActionProxy getProxy()

setName

public void setName(String name)

setNamespace

public void setNamespace(String namespace)

setExecuteResult

public void setExecuteResult(boolean executeResult)

setIgnoreContextParams

public void setIgnoreContextParams(boolean ignoreContextParams)

setFlush

public void setFlush(boolean flush)

setRethrowException

public void setRethrowException(boolean rethrowException)