假设前端代码：
<a href="user/add.do?command=add">添加用户</a><br>
<a href="user/del.do?command=del">删除用户</a><br>
<a href="user/modify.do?command=modify">修改用户</a><br>
模式匹配的过程：
假设用户请求<a href="user/add.do?command=add">添加用户</a><br>
那么会根据请求地址转到相应action的配置中，假设Action配置为：
配置代码：
<action path="/user/*"
type="com.bjsxt.struts.UserAction"
parameter="command"
>
<!--
<forward name="success" path="/user/{1}_success.jsp"/>
-->
<forward name="success" path="/{0}_success.jsp"/>
</action>
那么在此*对应的值为add，所以通配符{0}的值为add。同理也可在name中使用通配符
<forward name="{0}_success" path="/{0}_success.jsp"/>
Action代码：
public class UserAction extends DispatchAction {
public ActionForward add(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
//return mapping.findForward("add_success");
return mapping.findForward("success");
}
public ActionForward del(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
//return mapping.findForward("del_success");
return mapping.findForward("success");
}
public ActionForward modify(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
//return mapping.findForward("modify_success");
return mapping.findForward("success");
}
}