部署网上一个开源系统的代码，部署后报错如下

[pressman]

谁帮我看看，是环境哪里的问题？？
在线等，给分。

错误信息
---------------------
13:35:31.234 ERROR org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/jeecms] - Exception starting filter processTime
java.lang.NoClassDefFoundError: Filter
at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.5.0_22]
at java.lang.ClassLoader.defineClass(ClassLoader.java:621) ~[na:1.5.0_22]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) ~[na:1.5.0_22]
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1960) ~[catalina.jar:na]
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:933) ~[catalina.jar:na]
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1405) ~[catalina.jar:na]
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1284) ~[catalina.jar:na]
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:207) ~[catalina.jar:na]
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:302) ~[catalina.jar:na]
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:78) ~[catalina.jar:na]
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3666) [catalina.jar:na]
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4258) [catalina.jar:na]
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014) [catalina.jar:na]
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736) [catalina.jar:na]
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014) [catalina.jar:na]
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) [catalina.jar:na]
at org.apache.catalina.core.StandardService.start(StandardService.java:448) [catalina.jar:na]
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700) [catalina.jar:na]
at org.apache.catalina.startup.Catalina.start(Catalina.java:552) [catalina.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.5.0_22]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.5.0_22]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.5.0_22]
at java.lang.reflect.Method.invoke(Method.java:592) ~[na:1.5.0_22]
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) [bootstrap.jar:na]
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433) [bootstrap.jar:na]

[tom_66]

缺jar包。