搭建struts2，解决Tomcat启动时的错误：严重: Error filterStart

<Context path="" docBase="D:\projects2\SSHDemo\war" workDir="" reloadable="false"></Context>

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<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>/*</url-pattern> </filter-mapping>?

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2012-4-30 1:59:10 org.apache.catalina.core.ApplicationContext log信息: Initializing Spring root WebApplicationContext2012-4-30 1:59:10 org.apache.catalina.core.StandardContext listenerStart严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListenerjava.lang.NoClassDefFoundError: org/springframework/asm/ClassVisitor//错误为没有找到类：org.springframework.asm.ClassVisitor//这个类在Spring发布的release包里：/dist/org.springframework.asm-3.1.0.RELEASE.jar
注意，struts2发布的release包中的下面三个包是不要的：
asm-3.3.jar
asm-commons-3.3.jar
asm-tree-3.3.jar
如果也引入的话，可能会引起类冲突！