下面是錯誤信息、、、2017-3-10 9:26:01 org.apache.catalina.core.StandardWrapperValve invoke嚴重: Servlet.service() for servlet FindAllDeptServlet threw exceptionjava.lang.NoClassDefFoundError: Could not initialize class com.ysdit.util.SqlSessionFactoryUtil?? ?at com.ysdit.servlet.FindAllDeptServlet.doGet(FindAllDeptServlet.java:24)?? ?at com.ysdit.servlet.FindAllDeptServlet.doPost(FindAllDeptServlet.java:36)?? ?at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)?? ?at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)?? ?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)?? ?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)?? ?at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)?? ?at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)?? ?at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)?? ?at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)?? ?at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)?? ?at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)?? ?at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)?? ?at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)?? ?at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)?? ?at java.lang.Thread.run(Thread.java:619)