Question

struts2中出现了严重: Exception starting filter struts2的错误怎么办？

严重: Exception starting filter struts2java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.FilterDispatcher at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:269) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:424) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4072) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4726) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)

Answer 1

没有找到filterDispatch。可能没编译到服务器（比如tomcat）。重新加载下jar包。编译下 再试试。如果不行就是struts2jar包不全面吧。祝你好运

Answer 2

Exception starting filter struts2java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.FilterDispatcher ..................

struts2java.lang.ClassNotFoundException是没有找到对应的类而抛出异常
这个应该找到却没有找到的类是org.apache.struts2.dispatcher.FilterDispatcher
你看看你是不是在web.xml文件中有如下配置：
<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>
但是自从Struts 2.1.3以后，org.apache.struts2.dispatcher.FilterDispatcher已经标注为过时，正确的配置为<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
你改了试试。

Answer 3

ClassNotFoundException少jar包