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

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 wheather the result of this action is to be executed or not
• ignoreContextParams (Boolean) - default to false. Decides wheather 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

 public ActionComponent(ValueStack stack,
    HttpServletRequest req,
    HttpServletResponse res) 
{
           
        super(stack);
        this.req = req;
        this.res = res;
}

 public boolean end(Writer writer,
    String body) 
{
        boolean end = super.end(writer, "", false);
        try {
            if (flush) {
                try {
                    writer.flush();
                } catch (IOException e) {
                    LOG.warn("error while trying to flush writer ", e);
                }
            }
            executeAction();
            if ((getId() != null) && (proxy != null)) {
                getStack().setValue("#attr['" + getId() + "']",
                        proxy.getAction());
            }
        } finally {
            popComponentStack();
        }
        return end;
}

 public ActionProxy getProxy() 
{
        return proxy;
}

 public  void setActionProxyFactory(ActionProxyFactory actionProxyFactory) 
{
        this.actionProxyFactory = actionProxyFactory;
}

 public  void setExecuteResult(boolean executeResult) 
{
        this.executeResult = executeResult;
}

 public  void setFlush(boolean flush) 
{
        this.flush = flush;
}

 public  void setIgnoreContextParams(boolean ignoreContextParams) 
{
        this.ignoreContextParams = ignoreContextParams;
}

 public  void setName(String name) 
{
        this.name = name;
}

 public  void setNamespace(String namespace) 
{
        this.namespace = namespace;
}