SiteMesh和Struts2，Filter的配置顺序

Sitemesh和Struts2结合时，要特别注意它们各自Filter的顺序，否则会导致双方都不能正常工作。而又由于Struts2在2.1.3之前使用的是FilterDispatcher，2.1.3之后推荐使用StrutsPrepareFilter和StrutsExecuteFilter替代FilterDispatcher，因此，配置上又会有所不同。

2.1.3之前的版本，sitemesh的filter要介于StrutsPrepareFilter和FilterDispatcher之间，配置如下：

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<filter>

<filter-name>struts-cleanup</filter-name>

<filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>

</filter>

<filter-mapping>

<filter-name>struts-cleanup</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>



<filter>

<filter-name>sitemesh</filter-name>

<filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>

</filter>

<filter-mapping>

<filter-name>sitemesh</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>



<filter>

<filter-name>struts</filter-name>

<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>

</filter>

<filter-mapping>

<filter-name>struts</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

2.1.3之后的版本，sitemesh的filter要介于StrutsPrepareFilter和StrutsExecuteFilter之间，配置如下：

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<filter>

<filter-name>struts-cleanup</filter-name>

<filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>

</filter>

<filter-mapping>

<filter-name>struts-cleanup</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter>

<filter-name>struts-prepare</filter-name>

<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter</filter-class>

</filter>

<filter-mapping>

<filter-name>struts-prepare</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter>

<filter-name>sitemesh</filter-name>

<filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>

</filter>

<filter-mapping>

<filter-name>sitemesh</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>



<filter>

<filter-name>struts-execute</filter-name>

<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter</filter-class>

</filter>

<filter-mapping>

<filter-name>struts-execute</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

转自：http://blog.csdn.net/bluishglc/article/details/5969769