DispatchAction

(省略掉execute 里面的 if  else if()等等 一系列判断 从而在struts config-里 配置parameter 进行判断)

让 Action 继承 DispatchAction

 可以 省略  在 Aciton 的判断 type

     Useraction extends DispatchAction{

}

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 这里一定 要去掉 execute(mapping,form,request,response) 方法..

如果不去掉这个方法的话   就会 一直先调用这个方法 

 

public class Useraction extends DispatchAction {

public ActionForward insert(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		System.out.println("insert==========");
		return new ActionForward("/index.jsp");
	}
	public ActionForward delete(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		System.out.println("delete==========");
		return new ActionForward("/index.jsp");
	}

  

这个方法直接写  public  ActionForward insert(mapping,form,request,response)方法

 

而  Struts - config .xml 里 配置

 

<action path="/Useraction" type="com.user.action.Useraction" parameter="type"></action></action-mappings>

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parameter 是根据

 <a href="Useraction.do?type=insert">insert</a>
     <a href="Useraction.do?type=delete">delete</a>