weblogic部署javaweb项目出错，求大神关注！！！

Root cause of ServletException.
java.lang.NoClassDefFoundError: Could not initialize class com.sinosoft.utility.UserLog
at com.sinosoft.utility.UserLog.printException(UserLog.java:229)
at com.sinosoft.utility.UserLog.printException(UserLog.java:263)
at com.sinosoft.utility.ConfigInfo.GetValuebyCon(ConfigInfo.java:454)
at com.sinosoft.utility.StrTool.Conversion(StrTool.java:1515)
at jsp_servlet._common._easyqueryver3.__easyqueryxml._jspService(__easyqueryxml.java:371)
Truncated. see log file for complete stacktrace

在本地编译运行是没有问题的，但是部署到weblogic之后，登录项目查询数据时报错！求大神关注本问题！