严重: Servlet.service() for servlet [WelcomeServelet] in context with path [/Test] threw exception [Servlet execution threw an exception] with root cause java.lang.ClassNotFoundException: org.apache.ibatis.io.Resources at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735) at top.gdonly.test.util.SqlSessionFactoryUtil.initSqlSessionFactory(SqlSessionFactoryUtil.java:24) at top.gdonly.test.util.SqlSessionFactoryUtil.openSession(SqlSessionFactoryUtil.java:36) at top.gdonly.test.servelets.WelcomeServelet.doGet(WelcomeServelet.java:28) at javax.servlet.http.HttpServlet.service(HttpServlet.java:624) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087) at org.apache.coyote.AbstractProtocol AbstractConnectionHandler.process(AbstractProtocol.java:637)atorg.apache.tomcat.util.net.JIoEndpoint SocketProcessor.run(JIoEndpoint.java:318) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor Worker.run(UnknownSource)atorg.apache.tomcat.util.threads.TaskThread WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source)
以上是报的异常信息，根据异常显示是找不到 org.apache.ibatis.io.Resources 类，而这个类是在mybatis包中.
之前测试以java application形式运行结果正常，而在服务器上运行结果异常，推测应该将mybatis这个jar包复制到WEB-INF下的lib文件夹下。经测试，异常消失！
