tomcat运行时报Null EasyDataSource

[LynBerial]

前两天将项目与svn断开连接，自己写了点东西之后就开始报错了
错误如下：
严重: Servlet.service() for servlet [jsp] in context with path [/easyCustServ] threw exception [javax.servlet.ServletException: javax.servlet.jsp.JspTagException: [ ......................... ]java.sql.SQLException: Null EasyDataSource] with root cause
java.sql.SQLException: Null EasyDataSource
at cn.com.easy.core.sql.EasySqlRunner.openConnection(EasySqlRunner.java:138)
at cn.com.easy.core.sql.EasySqlRunner.query(EasySqlRunner.java:30)
at cn.com.easy.core.sql.SqlRunner.queryForMapList(SqlRunner.java:135)
at cn.com.easy.core.sql.SqlRunner.queryForMapList(SqlRunner.java:114)
at cn.com.easy.taglib.sql.QueryForListTag.executeSQL(QueryForListTag.java:65)
at cn.com.easy.taglib.sql.SQLTagSupport.doEndTag(SQLTagSupport.java:69)
at org.apache.jsp.pages.viewPlane.alarmViewAction_jsp._jspx_meth_e_005fq4l_005f0(alarmViewAction_jsp.java:236)
at org.apache.jsp.pages.viewPlane.alarmViewAction_jsp._jspx_meth_e_005fcase_005f0(alarmViewAction_jsp.java:171)
at org.apache.jsp.pages.viewPlane.alarmViewAction_jsp._jspx_meth_e_005fswitch_005f0(alarmViewAction_jsp.java:131)
at org.apache.jsp.pages.viewPlane.alarmViewAction_jsp._jspService(alarmViewAction_jsp.java:92)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
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:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)

中间的sql语句在sqlDeveloper里也是能查有结果的。
jdbc里配置的用户名，密码也是正确的，求大神解答！！！！！！！！！！！！！！！