Struts中Action的另一种写法

最新推荐文章于 2025-10-05 14:44:55 发布

原创最新推荐文章于 2025-10-05 14:44:55 发布 · 495 阅读

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文章标签：

#action #struts #exception #null #class

本文介绍了一种基于DispatchAction的编程模式，该模式继承自DispatchAction并包含Action，通过实例演示了如何利用这种方法来实现请求的分发处理，使得程序结构更为清晰。

在这种写法中继承的是DispatchAction，它包含Action。

通过这种方式使程序结构显得清晰。

例如：

public class DispatchTestAction extends DispatchAction {
    public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
             TestForm thisForm =(TestForm) actionForm;
             if(thisForm.getMethod()==null){

                 return null;
             } else{
                return dispatchMethod(actionMapping,actionForm,httpServletRequest,httpServletResponse,

thisForm.getMethod() );

//通过接收方法名，进行分发到不同的处理中去
}

}

    public ActionForward printMessage(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse){
        System.out.println("===this is the method named printMessage====");
        return actionMapping.findForward("success");
    }

    public ActionForward printAlert(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse){
        System.out.println("====this is the method named printAlert====");
        return null;
    }
}