/**//*遍历此方法的业务逻辑可知，*的优先级最高，如果是*，则不调用任何方法直接Forward，类似于ForwardAction*/?
private?static?final?String?NO_METHOD_CALL?=?"*";?…….?/**//*所有的FormBean都继承于BaseBean*/?BaseBean?bean?=?(BaseBean)?form;???????ActionContext.initCurrentContext(request,?response);???????if?(bean?!=?null)?
{?
????????//?Explicit?Method?Mapping?
/**//*下面是检查struts.xml配置中是否有parameter属性*/?????????Method?method?=?null;?????????String?methodName?=?mapping.getParameter();?????????if?(methodName?!=?null?&&?!NO_METHOD_CALL.equals(methodName))?{???????????try?{?/**//*通过反射，根据得到的方法名称取得方法的句柄*/?????????????method?=?bean.getClass().getMethod(methodName,?null);?????????????synchronized?(bean)?{?/**//*下面是关键一句，调用basebean拥有的接口ActionInterceptor的实现DefaultActionInterceptor，来完成具体方法的调用*/???????????????forward?=?bean.getInterceptor().intercept(new?ActionInvoker(bean,?method));?
????????????}??????????……..?/**//*无Parameter属性，检查path路径的最后一个/后的名称，即为调用的方法名*/?????????//?Path?Based?Method?Mapping?????????if?(method?==?null?&&?!NO_METHOD_CALL.equals(methodName))?{???????????methodName?=?mapping.getPath();???????????if?(methodName.length()?>?1)?{?????????????int?slash?=?methodName.lastIndexOf("/")?+?1;?????????????methodName?=?methodName.substring(slash);?????????????if?(methodName.length()?>?0)?{???????????????try?{?????????????????method?=?bean.getClass().getMethod(methodName,?null);?????????????????synchronized?(bean)?{???????????????????forward?=?bean.getInterceptor().intercept(new?ActionInvoker(bean,?method));?????????????????}??????????????……..?/**//*根据调用方法返回的String，得到页面的转移路径*/?return?mapping.findForward(forward);?/**//*通过反射，根据得到的方法名称取得方法的句柄*/?????????????method?=?bean.getClass().getMethod(methodName,?null);?????????????synchronized?(bean)?{?/**//*下面是关键一句，调用basebean拥有的接口ActionInterceptor的实现DefaultActionInterceptor，来完成具体方法的调用*/???????????????forward?=?bean.getInterceptor().intercept(new?ActionInvoker(bean,?method));?
????????????}?public?String?invoke()?{?????try?{???????return?(String)?method.invoke(bean,?null);?????}?catch?(Exception?e)?{???????throw?new?BeanActionException("Error?invoking?Action.??Cause:?"?+?e,?e);?????}???}???? |
<action?path="/shop/viewOrder"?type="com.ibatis.struts.BeanAction"????name="orderBean"?scope="session"????validate="false">????<forward?name="success"?path="/order/ViewOrder.jsp"/>??</action><action?path="/shop/viewOrder"?type="com.ibatis.struts.BeanAction"????name="orderBean"?parameter="viewOrder"?scope="session"????validate="false">????<forward?name="success"?path="/order/ViewOrder.jsp"/>??</action>?<action?path="/shop/viewOrder"?type="com.ibatis.struts.BeanAction"????name="orderBean"?parameter="*"?scope="session"????validate="false">????<forward?name="success"?path="/order/ViewOrder.jsp"/>??</action>| <action?path="/shop/viewOrder"?type="org.apache.struts.actions.ForwardAction"????parameter="/order/ViewOrder.jsp?"?scope="session"?validate="false">?</action>? |
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