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因低版本Struts2存在漏洞，更新为较新的版本。启动时，报如下警告信息：
*************************************************************************** * WARNING!!! * * * * >>> ActionContextCleanUp <<< is deprecated! Please use the new filters! * * * * This can be a source of unpredictable problems! * * * * Please refer to the docs for more details! * * http://struts.apache.org/2.x/docs/webxml.html * * * ***************************************************************************
自2.1.3版本开始，ActionContextCleanUp和FilterDispatcher都由StrutsPrepareAndExecuteFilter代替，配置如下：
注释掉
<filter> <filter-name>struts2CleanupFilter</filter-name> <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class> </filter> <filter-mapping> <filter-name>struts2CleanupFilter</filter-name> <url-pattern>/*</url-pattern> <dispatcher>REQUEST</dispatcher> <dispatcher>FORWARD</dispatcher> </filter-mapping>
和
<filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>*.nt</url-pattern> <dispatcher>REQUEST</dispatcher> <dispatcher>FORWARD</dispatcher> <dispatcher>INCLUDE</dispatcher> </filter-mapping>
改为：
<filter> <filter-name>struts2Filter</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2Filter</filter-name> <url-pattern>/*</url-pattern> <dispatcher>REQUEST</dispatcher> <dispatcher>FORWARD</dispatcher> </filter-mapping>
另外，如果要使用sitemesh，要按照strutsPrepareFilter -> sitemesh -> strutsExecuteFilter的顺序配置过滤器，将sitemesh配置在中间，如下：
<filter> <filter-name>strutsPrepareFilter</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter</filter-class> </filter> <filter> <filter-name>sitemesh</filter-name> <filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class> </filter> <filter> <filter-name>strutsExecuteFilter</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>strutsPrepareFilter</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>strutsExecuteFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
Struts2版本更新报错：>>> ActionContextCleanUp <<< is deprecated! Please use the new filters!
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原文地址：http://www.cnblogs.com/guyezhai/p/4929400.html
