成功在JBOSS4.2中发布项目，但进项目主页时却发生异常

Question

具体的错误信息就是
16:58:09,375 ERROR [STDERR] javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/commons/el/ExpressionEvaluatorImpl
16:58:09,375 ERROR [STDERR]  at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:273)
16:58:09,375 ERROR [STDERR]  at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
16:58:09,375 ERROR [STDERR]  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
16:58:09,375 ERROR [STDERR]  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
16:58:09,375 ERROR [STDERR]  at com.bcinfo.haobai.filter.LogFilter.doFilter(LogFilter.java:64)
16:58:09,406 ERROR [STDERR]  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
16:58:09,406 ERROR [STDERR]  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
16:58:09,406 ERROR [STDERR]  at com.bcinfo.haobai.filter.EnCodeFilter.doFilter(EnCodeFilter.java:54)
16:58:09,406 ERROR [STDERR]  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
16:58:09,406 ERROR [STDERR]  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)