struts1.x中的DispatchAction

DispatchAction
定义

public abstract class DispatchAction extends Action
这是一个抽象的Action,它会根据request 中的parameter来执行相应的方法。通个这个Action类可以将不同的Action集中到一个Action文件中来。

Struts-config.xml:

<action path="/saveSubscription" type="org.apache.struts.actions.DispatchAction" name="subscriptionForm" scope="request" input="/subscription.jsp" parameter="method"/>

在Action中要有相应的方法:

Public class demoAction extends DispatchAction{

public ActionForward delete(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception

public ActionForward insert(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception

public ActionForward update(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception

}

你就可以通过这样的方法来访问你的程序:


http://localhost:8080/myapp/saveSubscription.do?method=update


如果parameter中参数为空，则执行Action中unspecified方法