druid错误解决办法

java.sql.SQLException: connection holder is null

at com.alibaba.druid.pool.DruidPooledConnection.checkState(DruidPooledConnection.java:1083)

at com.alibaba.druid.pool.DruidPooledConnection.setAutoCommit(DruidPooledConnection.java:663)

at com.saas.query.baseQueryConf.JDBCExceute.excuteStr(JDBCExceute.java:206)

at com.saas.query.baseQueryConf.BaseQuery.baseCountQuery(BaseQuery.java:208)

at com.saas.spot.userMgr.UserQuery.getVerifyMember(UserQuery.java:285)

at org.apache.jsp.admin.mainMenu.home_jsp._jspService(home_jsp.java:136)

at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)

at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at tools.filter.CrossSiteScriptingFilter.doFilter(CrossSiteScriptingFilter.java:83)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at com.saas.biz.commen.CookiesMgr.doFilter(CookiesMgr.java:76)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)

at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2500)

at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2489)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:745)

Caused by: com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: 


** BEGIN NESTED EXCEPTION ** 


java.io.EOFException

MESSAGE: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.


STACKTRACE:


java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.

at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997)

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2411)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916)

at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)

at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)

at com.mysql.jdbc.Connection.execSQL(Connection.java:3250)

at com.mysql.jdbc.Connection.setAutoCommit(Connection.java:5395)

at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:551)

at com.alibaba.druid.filter.FilterAdapter.connection_setAutoCommit(FilterAdapter.java:984)

at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:547)

at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.setAutoCommit(ConnectionProxyImpl.java:430)

at com.alibaba.druid.pool.DruidPooledConnection.setAutoCommit(DruidPooledConnection.java:674)

at com.saas.sys.dbm.DbConnect.getConnection(DbConnect.java:29)

at com.saas.query.baseQueryConf.JDBCExceute.excuteStr(JDBCExceute.java:205)

at com.saas.query.baseQueryConf.BaseQuery.baseCountQuery(BaseQuery.java:208)

at com.saas.spot.userMgr.UserQuery.getVerifyMember(UserQuery.java:285)

at org.apache.jsp.admin.mainMenu.home_jsp._jspService(home_jsp.java:136)

at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)

at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at tools.filter.CrossSiteScriptingFilter.doFilter(CrossSiteScriptingFilter.java:83)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at com.saas.biz.commen.CookiesMgr.doFilter(CookiesMgr.java:76)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)

at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2500)

at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2489)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:745)



** END NESTED EXCEPTION **




Last packet sent to the server was 5 ms ago.

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2622)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916)

at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)

at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)

at com.mysql.jdbc.Connection.execSQL(Connection.java:3250)

at com.mysql.jdbc.Connection.setAutoCommit(Connection.java:5395)

at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:551)

at com.alibaba.druid.filter.FilterAdapter.connection_setAutoCommit(FilterAdapter.java:984)

at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:547)

at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.setAutoCommit(ConnectionProxyImpl.java:430)

at com.alibaba.druid.pool.DruidPooledConnection.setAutoCommit(DruidPooledConnection.java:674)

at com.saas.sys.dbm.DbConnect.getConnection(DbConnect.java:29)

at com.saas.query.baseQueryConf.JDBCExceute.excuteStr(JDBCExceute.java:205)

... 39 more


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