sitemesh导致页面不能正常显示问题

今天测试平台时,发现一个页面只显示了一半,后半截没了,用dw验证了一个html,没发现什么问题,想了一下,问题只能出在sitemesh上,于是把sitemesh先注释掉,果然这个页面可以正常显示了.
注:这个页面是以前的,没有用到sitemesh控制布局结构,我把该页面 改为用sitemesh布局后,也能正常显示.
web.xml中配置的过滤器:

<filter>
    <filter-name>Acegi Filter Chain Proxy</filter-name>
    <filter-class>org.acegisecurity.util.FilterToBeanProxy</filter-class>
    <init-param>
        <param-name>targetClass</param-name>
        <param-value>org.acegisecurity.util.FilterChainProxy</param-value>
    </init-param>
</filter>
<filter>
    <filter-name>webwork-cleanup</filter-name>
    <filter-class>com.opensymphony.webwork.dispatcher.ActionContextCleanUp</filter-class>
</filter>
<filter>
    <filter-name>sitemesh</filter-name>
    <filter-class>com.opensymphony.webwork.sitemesh.FreeMarkerPageFilter</filter-class>
</filter>
<filter>
    <filter-name>webwork</filter-name>
    <filter-class>com.opensymphony.webwork.dispatcher.FilterDispatcher</filter-class>
</filter>

<filter-mapping>
    <filter-name>Acegi Filter Chain Proxy</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
        <filter-name>webwork-cleanup</filter-name>
        <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
        <filter-name>sitemesh</filter-name>
        <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
        <filter-name>webwork</filter-name>
        <url-pattern>*.action</url-pattern>
</filter-mapping>

siteMesh.xml配置如下:

<sitemesh>
    <property name="decorators-file" value="/WEB-INF/decorators.xml"/>
    <excludes file="${decorators-file}"/>

    <page-parsers>
        <parser content-type="text/html" class="com.opensymphony.module.sitemesh.parser.FastPageParser"/>
        <parser content-type="text/html;charset=UTF-8"
            class="com.opensymphony.module.sitemesh.parser.HTMLPageParser" />
    </page-parsers>

    <decorator-mappers>

        <mapper class="com.opensymphony.module.sitemesh.mapper.PageDecoratorMapper">
            <param name="property.1" value="meta.decorator"/>
            <param name="property.2" value="decorator"/>
        </mapper>

        <mapper class="com.opensymphony.module.sitemesh.mapper.FrameSetDecoratorMapper">
        </mapper>

        <mapper class="com.opensymphony.module.sitemesh.mapper.AgentDecoratorMapper">
            <param name="match.MSIE" value="ie"/>
            <param name="match.Mozilla [" value="ns"/>
            <param name="match.Opera" value="opera"/>
            <param name="match.Lynx" value="lynx"/>
        </mapper>

        <mapper class="com.opensymphony.module.sitemesh.mapper.PrintableDecoratorMapper">
            <param name="decorator" value="printable"/>
            <param name="parameter.name" value="printable"/>
            <param name="parameter.value" value="true"/>
        </mapper>

        <mapper class="com.opensymphony.module.sitemesh.mapper.RobotDecoratorMapper">
            <param name="decorator" value="robot"/>
        </mapper>

        <mapper class="com.opensymphony.module.sitemesh.mapper.ParameterDecoratorMapper">
            <param name="decorator.parameter" value="decorator"/>
            <param name="parameter.name" value="confirm"/>
            <param name="parameter.value" value="true"/>
        </mapper>

        <mapper class="com.opensymphony.module.sitemesh.mapper.FileDecoratorMapper">
        </mapper>

        <mapper class="com.opensymphony.module.sitemesh.mapper.ConfigDecoratorMapper">
            <param name="config" value="${decorators-file}"/>
        </mapper>

    </decorator-mappers>

</sitemesh>

我的表示层用的是Freemarker,在项目里不是直接访问Freemarker的,都有有webwork的action转发过去的.
个人觉得可能是以下原因:
1,sitemesh对页面的大小有限制,只能输出大小为一定量的响应流.??
2,配置有问题,可能是那里配置有误,或者是acegi过滤器和sitemesh是否会冲突??
那位遇到同样的问题或者有好的解决方案,大家探讨一下.