sitemesh定义多个装饰器问题

Question

sitemesh定义多个装饰器时老是全部装饰
<decorators defaultdir="/WEB-INF/decorators">
<decorator name="frontmainframe" page="mainframe.jsp">
  <pattern>/*</pattern>
</decorator>
<decorator name="backmainframe" page="backmainframe.jsp">
  <pattern>/jsp/backviewer/*</pattern>
</decorator>
</decorators>
如果写成如下这样：
<decorators defaultdir="/WEB-INF/decorators">
<decorator name="frontmainframe" page="mainframe.jsp">
  <pattern>/jsp/frontviewer/*</pattern>
</decorator>
<decorator name="backmainframe" page="backmainframe.jsp">
  <pattern>/jsp/backviewer/*</pattern>
</decorator>
</decorators>
则一个页面也不装饰!!

Answer 1