An Error has occurred in this application.
javax.servlet.ServletException: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io exception: The Network Adapter could not establish the connection)
	at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:225)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.yjedu.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:68)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.yjedu.vcmlab.web.action.eduyun.EduyunLoginFilter.doFilter(EduyunLoginFilter.java:97)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:367)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:639)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:882)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1647)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:750)
Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io exception: The Network Adapter could not establish the connection)
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:155)
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:128)
	at com.yjedu.util.GetDbConnection.getCon(GetDbConnection.java:24)
	at com.yjedu.util.DatabaseUtil.getConnection(DatabaseUtil.java:41)
	at com.yjedu.vcmlab.data.dao.impl.LabFodderDAOImp.getList(LabFodderDAOImp.java:146)
	at com.yjedu.vcmlab.data.dao.impl.LabFodderDAOImp.getList(LabFodderDAOImp.java:114)
	at com.yjedu.vcmlab.service.impl.LabFodderManagerImp.getList(LabFodderManagerImp.java:47)
	at com.yjedu.vcmlab.web.action.eduyun.IndexAction.execute(IndexAction.java:43)
	at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:105)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
	... 33 more
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io exception: The Network Adapter could not establish the connection)
	at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:855)
	at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:540)
	at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:177)
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:152)
	... 42 more
Caused by: java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
	at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
	at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
	at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:334)
	at oracle.jdbc.ttc7.TTC7Protocol.handleIOException(TTC7Protocol.java:3678)
	at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:352)
	at oracle.jdbc.driver.OracleConnection.(OracleConnection.java:365)
	at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:547)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:347)
	at JdbcOraWrapperDriver.connect(JdbcOraWrapperDriver.java:76)
	at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:37)
	at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:290)
	at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:877)
	at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:851)
	... 45 more