警告Cannot resolve com.mysq.jdbc.Connection.ping method.

wz7090 2016-06-30 09:12:35
我的一个新布好的平台启动后出现警告，请猿友帮忙分析，下面贴代码：

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zzb380494215 2016-07-27
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我擦了，确实，我把mysql-connector-java-5.0.4-bin 升到>>>>>> mysql-connector-java-5.1.39-bin确实不报这个错了， 可以durid用的5.1+的版本吧。
wz7090 2016-07-01
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引用 10 楼 qnmdcsdn 的回复:
[quote=引用 7 楼 wz7090 的回复:] [quote=引用 6 楼 qnmdcsdn 的回复:] 空指针问题，看不到代码不好分析，是不是初始化的时候有什么没注入进去
代码里没有错误，start时就像上边会出空指针，貌似和mysql有关系？[/quote] at com.alibaba.druid.pool.vendor.MySqlValidConnectionChecker.<init>(MySqlValidConnectionChecker.java:50) 看情况像是检查连接的时候报的，是不是连接没获取到[/quote] 确实是说检查连接出现异常，但start service后访问前台感觉没有什么异样，也能获取到数据。我想知道难道connectionchecker出错也无所谓？这个connectionchecker是干什么用的 另外上述异常已解决，是jdbc驱动版本的问题，走了很多弯路。原先使用的是 jdbc5.1.8版本，先是降低到5.1.7不行，后升到5.1.9和5.1.10不行，最后更新到5.1.25终于不报异常了
尼古拉斯-全蛋 2016-06-30
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空指针问题，看不到代码不好分析，是不是初始化的时候有什么没注入进去
家里敷泥呀 2016-06-30
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程序员从来不关心警告，主要是java.lang.NullPointerException。 这是个问题。
家里敷泥呀 2016-06-30
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程序员从来不关心警告，主要是
wz7090 2016-06-30
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08:58:57,006 INFO DruidDataSource:722 - {dataSource-4} inited 08:58:57,034 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-7e89-4ce93d7e-b6b7-8b760144be9d' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,155 INFO DateUtil:427 - Date parse error! 08:58:58,155 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-802d-640e9e29-8281-a593865ff13c' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,160 INFO DateUtil:427 - Date parse error! 08:58:58,160 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-81b0-6e890f2c-95c1-e91b6587a8c7' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,164 INFO DateUtil:427 - Date parse error! 08:58:58,165 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-81b1-dde9ac1b-95c1-e91b6587a8c7' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,171 INFO DateUtil:427 - Date parse error! 08:58:58,171 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-81be-1c87fc78-b528-87ecf5aa8918' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,176 INFO DateUtil:427 - Date parse error! 08:58:58,176 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-8330-bc935dea-8fcc-95326fa8f055' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,181 INFO DateUtil:427 - Date parse error! 08:58:58,181 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-8660-3c27a469-84bd-8913e9e9cca1' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,186 INFO DateUtil:427 - Date parse error! 08:58:58,187 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-86fd-b70c4868-963c-47e2aa0656f2' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,191 INFO DateUtil:427 - Date parse error! 08:58:58,192 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-86fd-fd811617-963c-47e2aa0656f2' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,196 INFO DateUtil:427 - Date parse error! 08:58:58,197 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-870c-d27a3b06-963c-47e2aa0656f2' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,202 INFO DateUtil:427 - Date parse error! 08:58:58,202 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-8a58-82144b41-9194-1d682b48d529' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,207 INFO DateUtil:427 - Date parse error! 08:58:58,207 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-9544-1111a2cb-a2c5-53255716f388' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,212 INFO DateUtil:427 - Date parse error! 08:58:58,213 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-9565-4d5ad2a2-b136-f1be13154a10' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,218 INFO DateUtil:427 - Date parse error! 08:58:58,219 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-956c-50c7ba9f-b136-f1be13154a10' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,224 INFO DateUtil:427 - Date parse error! 08:58:58,225 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e3-a836-c4b4cbe3-8893-11136df375f0' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,229 INFO DateUtil:427 - Date parse error! 08:58:58,231 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e4-63ff-5d9df2ad-9f19-57d7b83ae7be' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,238 INFO DateUtil:427 - Date parse error! 08:58:58,239 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e4-7b56-045d6210-a888-6d6b162bf5de' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,245 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e5-93f1-00f49b62-a810-fbcd742073f4' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,252 INFO DateUtil:427 - Date parse error! 08:58:58,253 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e5-975b-abcfab55-8df7-f9d0d3fc48f4' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,258 INFO DateUtil:427 - Date parse error! 08:58:58,258 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e5-9807-a0f67f45-8c10-2b25c7a7fbd8' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,263 INFO DateUtil:427 - Date parse error! 08:58:58,263 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e6-166b-b60373ee-8dd3-ffcc0f600e54' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,268 INFO DateUtil:427 - Date parse error! 08:58:58,268 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e6-1bef-a61693ea-b0b3-037684f7b9ad' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,275 INFO DateUtil:427 - Date parse error! 08:58:58,276 DEBUG AbstractDocStaticTblDAO:1453 - MY SQL: SELECT * FROM (select * from tlk_Annual_holidays where Item_userid = '11e6-1bef-d134f041-b0b3-037684f7b9ad' and Item_year = '2015') table_0 WHERE table_0.DOMAINID ='11e1-81e2-37f74759-9124-47aada6b7467' 08:58:58,281 INFO DateUtil:427 - Date parse error! 08:58:58,281 INFO Task:617 - ************ Execute End ************* 08:58:58,376 DEBUG Task:462 - Time Difference: -5657(s) 08:58:58,376 INFO Task:569 - ************ Execute Start ************* 08:58:58,399 INFO Task:617 - ************ Execute End ************* Report System initing...... [2016-06-30 08:58:59] runqianReportLogger : [INFO ] - Set The Max Cells Num to 100000 , old value is -1 08:58:59,861 INFO runqianReportLogger:26 - Set The Max Cells Num to 100000 , old value is -1 [2016-06-30 08:58:59] runqianReportLogger : [WARN ] - 快逸报表中设定的最大并发数超出了授权允许范围，自动设为授权允许的最大线程数！ 08:58:59,878 WARN runqianReportLogger:34 - 快逸报表中设定的最大并发数超出了授权允许范围，自动设为授权允许的最大线程数！ Report System initialized...... 六月 30, 2016 8:59:00 上午 org.apache.coyote.http11.Http11AprProtocol start 信息: Starting Coyote HTTP/1.1 on http-8080 六月 30, 2016 8:59:00 上午 org.apache.coyote.ajp.AjpAprProtocol start 信息: Starting Coyote AJP/1.3 on ajp-8009 六月 30, 2016 8:59:00 上午 org.apache.catalina.startup.Catalina start 信息: Server startup in 15653 ms
wz7090 2016-06-30
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08:58:56,929 WARN MySqlValidConnectionChecker:55 - Cannot resolve com.mysq.jdbc.Connection.ping method. Will use 'SELECT 1' instead. java.lang.NullPointerException at com.alibaba.druid.pool.vendor.MySqlValidConnectionChecker.<init>(MySqlValidConnectionChecker.java:50) at com.alibaba.druid.pool.DruidDataSource.initValidConnectionChecker(DruidDataSource.java:945) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:660) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:991) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:987) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:103) at cn.myapps.base.ejb.AbstractRunTimeProcessBean.getConnection(AbstractRunTimeProcessBean.java:333) at cn.myapps.core.dynaform.document.ejb.DocumentProcessBean.getDAO(DocumentProcessBean.java:1065) at cn.myapps.protection.util.WarpProcessFactory$WarpDocumentProcessBean.getDAO(WarpProcessFactory.java:673) at cn.myapps.core.dynaform.document.ejb.DocumentProcessBean.findBySQL(DocumentProcessBean.java:1027) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.mozilla.javascript.MemberBox.invoke(Unknown Source) at org.mozilla.javascript.NativeJavaMethod.call(Unknown Source) at org.mozilla.javascript.optimizer.OptRuntime.call2(Unknown Source) at org.mozilla.javascript.gen.c19._c22(baselib:380) at org.mozilla.javascript.gen.c19.call(baselib) at org.mozilla.javascript.optimizer.OptRuntime.callName(Unknown Source) at org.mozilla.javascript.gen.c40._c0(TASK(11e2-6051-427aaeae-b702-3f84c4cacb0d).同步Annual_holidays数据.TaskScript:18) at org.mozilla.javascript.gen.c40.call(TASK(11e2-6051-427aaeae-b702-3f84c4cacb0d).同步Annual_holidays数据.TaskScript) at org.mozilla.javascript.ContextFactory.doTopCall(Unknown Source) at org.mozilla.javascript.ScriptRuntime.doTopCall(Unknown Source) at org.mozilla.javascript.gen.c40.call(TASK(11e2-6051-427aaeae-b702-3f84c4cacb0d).同步Annual_holidays数据.TaskScript) at org.mozilla.javascript.gen.c40.exec(TASK(11e2-6051-427aaeae-b702-3f84c4cacb0d).同步Annual_holidays数据.TaskScript) at cn.myapps.core.macro.runner.JavaScriptRunner.run(JavaScriptRunner.java:135) at cn.myapps.core.task.ejb.Task.execute(Task.java:582) at cn.myapps.util.timer.TimerRunner$1.run(TimerRunner.java:99) at java.util.TimerThread.mainLoop(Timer.java:555) at java.util.TimerThread.run(Timer.java:505)
wz7090 2016-06-30
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六月 30, 2016 8:58:43 上午 org.apache.catalina.core.AprLifecycleListener init 信息: Loaded APR based Apache Tomcat Native library 1.1.27 using APR version 1.4.6. 六月 30, 2016 8:58:43 上午 org.apache.catalina.core.AprLifecycleListener init 信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. 六月 30, 2016 8:58:43 上午 org.apache.tomcat.util.digester.SetPropertiesRule begin 警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:obpm' did not find a matching property. 六月 30, 2016 8:58:44 上午 org.apache.catalina.core.AprLifecycleListener initializeSSL 信息: OpenSSL successfully initialized with version OpenSSL 1.0.1d 5 Feb 2013 六月 30, 2016 8:58:44 上午 org.apache.coyote.http11.Http11AprProtocol init 信息: Initializing Coyote HTTP/1.1 on http-8080 六月 30, 2016 8:58:44 上午 org.apache.coyote.ajp.AjpAprProtocol init 信息: Initializing Coyote AJP/1.3 on ajp-8009 六月 30, 2016 8:58:44 上午 org.apache.catalina.startup.Catalina load 信息: Initialization processed in 1174 ms 六月 30, 2016 8:58:44 上午 org.apache.catalina.core.StandardService start 信息: Starting service Catalina 六月 30, 2016 8:58:44 上午 org.apache.catalina.core.StandardEngine start 信息: Starting Servlet Engine: Apache Tomcat/6.0.39 #Liscense key #Sun Jun 12 16:58:48 CST 2016 svnno= organization=\u5FAEOA365 smsSender=teemlink weixinEnable=true powerby=\u5929\u7FCE\u516C\u53F8 ipAddr= copyrighttext=\r\n<table style\='width\:100%;border-top\:1px solid \#15428b; color\:gray; text-align\:right;font-size\:14px;margin-bottom\:10px;'>\r\n<tr><td title\='SVNNO\:'>\r\nDESIGNED BY \u5FAEOA365 POWERED BY myApps3.0[M3] \u00A9Teemlink.\r\n</td></tr>\r\n</table> version=myApps3.0[M3] type=S.\u6807\u51C6\u7248 ipBinding=false 08:58:55,013 INFO MultiLanguageProperty:49 - Initializing property multiLanguage_i18n_CN.properties 08:58:55,017 INFO MultiLanguageProperty:49 - Initializing property multiLanguage_i18n_EN.properties 08:58:55,018 INFO MultiLanguageProperty:49 - Initializing property multiLanguage_i18n_RU.properties 08:58:55,020 INFO MultiLanguageProperty:49 - Initializing property multiLanguage_i18n_TW.properties 08:58:55,227 WARN MySqlValidConnectionChecker:55 - Cannot resolve com.mysq.jdbc.Connection.ping method. Will use 'SELECT 1' instead. java.lang.NullPointerException at com.alibaba.druid.pool.vendor.MySqlValidConnectionChecker.<init>(MySqlValidConnectionChecker.java:50) at com.alibaba.druid.pool.DruidDataSource.initValidConnectionChecker(DruidDataSource.java:945) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:660) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:991) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:987) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:103) at cn.myapps.pm.util.ConnectionManager.newConnection(ConnectionManager.java:133) at cn.myapps.pm.util.ConnectionManager.getConnection(ConnectionManager.java:49) at cn.myapps.pm.base.schema.SchemaHelper.init(SchemaHelper.java:30) at cn.myapps.base.web.listener.StartupListener.contextInitialized(StartupListener.java:76) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4210) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4709) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardHost.start(StandardHost.java:822) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) at org.apache.catalina.core.StandardService.start(StandardService.java:525) at org.apache.catalina.core.StandardServer.start(StandardServer.java:754) at org.apache.catalina.startup.Catalina.start(Catalina.java:595) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) 08:58:55,282 INFO DruidDataSource:722 - {dataSource-1} inited 08:58:55,798 WARN MySqlValidConnectionChecker:55 - Cannot resolve com.mysq.jdbc.Connection.ping method. Will use 'SELECT 1' instead. java.lang.NullPointerException at com.alibaba.druid.pool.vendor.MySqlValidConnectionChecker.<init>(MySqlValidConnectionChecker.java:50) at com.alibaba.druid.pool.DruidDataSource.initValidConnectionChecker(DruidDataSource.java:945) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:660) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:991) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:987) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:103) at cn.myapps.attendance.util.ConnectionManager.newConnection(ConnectionManager.java:119) at cn.myapps.attendance.util.ConnectionManager.getConnection(ConnectionManager.java:49) at cn.myapps.attendance.base.schema.SchemaHelper.init(SchemaHelper.java:30) at cn.myapps.base.web.listener.StartupListener.contextInitialized(StartupListener.java:77) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4210) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4709) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardHost.start(StandardHost.java:822) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) at org.apache.catalina.core.StandardService.start(StandardService.java:525) at org.apache.catalina.core.StandardServer.start(StandardServer.java:754) at org.apache.catalina.startup.Catalina.start(Catalina.java:595) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) 08:58:55,810 INFO DruidDataSource:722 - {dataSource-2} inited 08:58:55,878 WARN MySqlValidConnectionChecker:55 - Cannot resolve com.mysq.jdbc.Connection.ping method. Will use 'SELECT 1' instead. java.lang.NullPointerException at com.alibaba.druid.pool.vendor.MySqlValidConnectionChecker.<init>(MySqlValidConnectionChecker.java:50) at com.alibaba.druid.pool.DruidDataSource.initValidConnectionChecker(DruidDataSource.java:945) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:660) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:991) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:987) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:103) at cn.myapps.qm.util.ConnectionManager.newConnection(ConnectionManager.java:110) at cn.myapps.qm.util.ConnectionManager.getConnection(ConnectionManager.java:40) at cn.myapps.qm.base.schema.SchemaHelper.init(SchemaHelper.java:16) at cn.myapps.base.web.listener.StartupListener.contextInitialized(StartupListener.java:80) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4210) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4709) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardHost.start(StandardHost.java:822) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) at org.apache.catalina.core.StandardService.start(StandardService.java:525) at org.apache.catalina.core.StandardServer.start(StandardServer.java:754) at org.apache.catalina.startup.Catalina.start(Catalina.java:595) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) 08:58:55,888 INFO DruidDataSource:722 - {dataSource-3} inited 08:58:56,553 DEBUG Task:462 - Time Difference: -17242(s) 08:58:56,554 INFO Task:569 - ************ Execute Start *************
尼古拉斯-全蛋 2016-06-30
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引用 7 楼 wz7090 的回复:
[quote=引用 6 楼 qnmdcsdn 的回复:] 空指针问题，看不到代码不好分析，是不是初始化的时候有什么没注入进去
代码里没有错误，start时就像上边会出空指针，貌似和mysql有关系？[/quote] at com.alibaba.druid.pool.vendor.MySqlValidConnectionChecker.<init>(MySqlValidConnectionChecker.java:50) 看情况像是检查连接的时候报的，是不是连接没获取到
家里敷泥呀 2016-06-30
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引用 8 楼 wz7090 的回复:
[quote=引用 5 楼 Q80470101 的回复:] 程序员从来不关心警告，主要是java.lang.NullPointerException。 这是个问题。
这个空指针也是警告吧 百度去查Cannot resolve com.mysq.jdbc.Connection.ping method.也没有结果[/quote] NullPointerException 这是异常。
wz7090 2016-06-30
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引用 5 楼 Q80470101 的回复:
程序员从来不关心警告，主要是java.lang.NullPointerException。 这是个问题。
这个空指针也是警告吧 百度去查Cannot resolve com.mysq.jdbc.Connection.ping method.也没有结果
wz7090 2016-06-30
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引用 6 楼 qnmdcsdn 的回复:
空指针问题，看不到代码不好分析，是不是初始化的时候有什么没注入进去
代码里没有错误，start时就像上边会出空指针，貌似和mysql有关系？
【197】HCIA Datacom综合配置实验
2.13 完成后 可以ping通百度： Ping www.a.shifen.com [14.119.104.189]: 32 data bytes, Press Ctrl_C to break From 14.119.104.189: bytes=32 seq=1 ttl=52 time=62 ms From 14.119.104.189: bytes=32 seq=2 ttl...
druid数据源连接mysql（8.0版本以上）,报错Cannot resolve com.mysq.jdbc.Connection.ping method. Will use 'SELECT 1'
druid数据源连接mysql（8.0版本以上）,报错Cannot resolve com.mysq.jdbc.Connection.ping method. Will use ‘SELECT 1’ instead. 报错信息是这样的： 警告: Cannot resolve com.mysq.jdbc.Connection.ping method. Will use 'SELECT 1' in...
JDBC-报错Cannot resolve com.mysq.jdbc.Connection.ping method
原因 报错Cannot resolve com.mysq.jdbc.Connection.ping method 数据库连接池的配置和之前的配置不大一样 之前的配置是driver 连接池加载的是driverClassName 解决 重新配置properties文件 driverClassName = com.mysql.cj.jdbc.Driver url = jdbc:mysql://localhost:3306/zzbmysql?useUnicode=true&characterEncod
druid的错误 Cannot resolve com.mysq.jdbc.Connection.ping method. init datasource error validateConnecti
警告: Cannot resolve com.mysq.jdbc.Connection.ping method. Will use ‘SELECT 1’ instead. java.lang.NullPointerException com.alibaba.druid.pool.DruidDataSource error 严重: init datasource error java.sql.SQLException: validateConnection false 下面是错误现象 修改druid..
Cannot resolve com.mysq.jdbc.Connection.ping method. Will use 'SELECT 1' instead.
springboot项目中访问数据库提示 Cannot resolve com.mysq.jdbc.Connection.ping method. Will use ‘SELECT 1’ instead. 造成的原因：druid和mysql的版本不兼容
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