Cannot create JDBC driver of class '' for connect URL 'null'

1、错误描述

严重: 抛出了“org.apache.tomcat.dbcp.dbcp.SQLNestedException”异常：Cannot create JDBC driver of class '' for connect URL 'null'
堆栈：
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(1452).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(1371).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(1044).
com.tansuosoft.discoverx.db.Database.getConnection(129).
com.tansuosoft.discoverx.dao.DBRequest.getConnection(199).
com.tansuosoft.discoverx.dao.DBRequest.sendRequest(512).
com.tansuosoft.discoverx.web.app.message.UrgeContext.init(96).
com.tansuosoft.discoverx.web.app.message.UrgeContext.(50).
com.tansuosoft.discoverx.web.app.message.UrgeContext.getInstance(107).
com.tansuosoft.discoverx.web.ContextListener.contextInitialized(113).
org.apache.catalina.core.StandardContext.listenerStart(5017).
org.apache.catalina.core.StandardContext.startInternal(5531).
org.apache.catalina.util.LifecycleBase.start(150).
org.apache.catalina.core.ContainerBase.addChildInternal(901).
org.apache.catalina.core.ContainerBase.addChild(877).
org.apache.catalina.core.StandardHost.addChild(652).
org.apache.catalina.startup.HostConfig.deployDescriptor(677).
org.apache.catalina.startup.HostConfig$DeployDescriptor.run(1912).
java.util.concurrent.Executors$RunnableAdapter.call(511).
java.util.concurrent.FutureTask.run(266).
java.util.concurrent.ThreadPoolExecutor.runWorker(1142).
java.util.concurrent.ThreadPoolExecutor$Worker.run(617).
java.lang.Thread.run(745).

信息: 执行SQL语句时出现异常：，原因：Cannot create JDBC driver of class '' for connect URL 'null'
九月 07, 2015 4:36:04 下午 com.tansuosoft.discoverx.dao.DBRequest sendRequest
信息: SQL执行错误：“Cannot create JDBC driver of class '' for connect URL 'null'”，SQL语句=“
严重: 抛出了“org.apache.tomcat.dbcp.dbcp.SQLNestedException”异常：Cannot create JDBC driver of class '' for connect URL 'null'
堆栈：
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(1452).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(1371).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(1044).
org.apache.catalina.core.StandardContext.listenerStart(5017).
org.apache.catalina.core.StandardContext.startInternal(5531).
org.apache.catalina.util.LifecycleBase.start(150).
org.apache.catalina.core.ContainerBase.addChildInternal(901).
org.apache.catalina.core.ContainerBase.addChild(877).
org.apache.catalina.core.StandardHost.addChild(652).
org.apache.catalina.startup.HostConfig.deployDescriptor(677).
org.apache.catalina.startup.HostConfig$DeployDescriptor.run(1912).
java.util.concurrent.Executors$RunnableAdapter.call(511).
java.util.concurrent.FutureTask.run(266).
java.util.concurrent.ThreadPoolExecutor.runWorker(1142).
java.util.concurrent.ThreadPoolExecutor$Worker.run(617).
java.lang.Thread.run(745).

九月 07, 2015 4:36:04 下午 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class com.tansuosoft.discoverx.web.ContextListener
common.exception.DBException: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5017)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5531)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
	at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:677)
	at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1912)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1452)
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
	... 17 more
Caused by: java.sql.SQLException: No suitable driver
	at java.sql.DriverManager.getDriver(DriverManager.java:315)
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1437)
	... 22 more

九月 07, 2015 4:36:04 下午 org.apache.catalina.core.StandardContext startInternal
严重: One or more listeners failed to start. Full details will be found in the appropriate container log file
九月 07, 2015 4:36:04 下午 org.apache.catalina.core.StandardContext startInternal
严重: Context [/osp] startup failed due to previous errors
九月 07, 2015 4:36:04 下午 com.tansuosoft.discoverx.web.ContextListener fireEvent
信息: 触发"onsystemshutdown"类型的事件处理程序:
九月 07, 2015 4:36:04 下午 com.tansuosoft.discoverx.db.Database executeScalar
信息: 执行SQL语句时出现异常：原因：Cannot create JDBC driver of class '' for connect URL 'null'
严重: 抛出了“org.apache.tomcat.dbcp.dbcp.SQLNestedException”异常：Cannot create JDBC driver of class '' for connect URL 'null'
堆栈：
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(1452).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(1371).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(1044).
org.apache.catalina.core.StandardContext.listenerStop(5064).
org.apache.catalina.core.StandardContext.stopInternal(5726).
org.apache.catalina.util.LifecycleBase.stop(232).
org.apache.catalina.util.LifecycleBase.start(160).
org.apache.catalina.core.ContainerBase.addChildInternal(901).
org.apache.catalina.core.ContainerBase.addChild(877).
org.apache.catalina.core.StandardHost.addChild(652).
org.apache.catalina.startup.HostConfig.deployDescriptor(677).
org.apache.catalina.startup.HostConfig$DeployDescriptor.run(1912).
java.util.concurrent.Executors$RunnableAdapter.call(511).
java.util.concurrent.FutureTask.run(266).
java.util.concurrent.ThreadPoolExecutor.runWorker(1142).
java.util.concurrent.ThreadPoolExecutor$Worker.run(617).
java.lang.Thread.run(745).

信息: 执行SQL语句时出现异常：原因：Cannot create JDBC driver of class '' for connect URL 'null'
严重: 抛出了“org.apache.tomcat.dbcp.dbcp.SQLNestedException”异常：Cannot create JDBC driver of class '' for connect URL 'null'
堆栈：
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(1452).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(1371).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(1044).
org.apache.catalina.core.StandardContext.listenerStop(5064).
org.apache.catalina.core.StandardContext.stopInternal(5726).
org.apache.catalina.util.LifecycleBase.stop(232).
org.apache.catalina.util.LifecycleBase.start(160).
org.apache.catalina.core.ContainerBase.addChildInternal(901).
org.apache.catalina.core.ContainerBase.addChild(877).
org.apache.catalina.core.StandardHost.addChild(652).
org.apache.catalina.startup.HostConfig.deployDescriptor(677).
org.apache.catalina.startup.HostConfig$DeployDescriptor.run(1912).
java.util.concurrent.Executors$RunnableAdapter.call(511).
java.util.concurrent.FutureTask.run(266).
java.util.concurrent.ThreadPoolExecutor.runWorker(1142).
java.util.concurrent.ThreadPoolExecutor$Worker.run(617).
java.lang.Thread.run(745).

九月 07, 2015 4:36:05 下午 com.tansuosoft.discoverx.web.ContextListener fireEvent
严重: 抛出了“java.lang.RuntimeException”异常：无法初始化“TotalAccessCount”对应的自增长序号！
堆栈：
org.apache.catalina.core.StandardContext.listenerStop(5064).
org.apache.catalina.core.StandardContext.stopInternal(5726).
org.apache.catalina.util.LifecycleBase.stop(232).
org.apache.catalina.util.LifecycleBase.start(160).
org.apache.catalina.core.ContainerBase.addChildInternal(901).
org.apache.catalina.core.ContainerBase.addChild(877).
org.apache.catalina.core.StandardHost.addChild(652).
org.apache.catalina.startup.HostConfig.deployDescriptor(677).
org.apache.catalina.startup.HostConfig$DeployDescriptor.run(1912).
java.util.concurrent.Executors$RunnableAdapter.call(511).
java.util.concurrent.FutureTask.run(266).
java.util.concurrent.ThreadPoolExecutor.runWorker(1142).
java.util.concurrent.ThreadPoolExecutor$Worker.run(617).
java.lang.Thread.run(745).

严重: 抛出了“org.apache.tomcat.dbcp.dbcp.SQLNestedException”异常：Cannot create JDBC driver of class '' for connect URL 'null'
堆栈：
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(1452).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(1371).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(1044).
org.apache.catalina.core.StandardContext.listenerStop(5064).
org.apache.catalina.core.StandardContext.stopInternal(5726).
org.apache.catalina.util.LifecycleBase.stop(232).
org.apache.catalina.util.LifecycleBase.start(160).
org.apache.catalina.core.ContainerBase.addChildInternal(901).
org.apache.catalina.core.ContainerBase.addChild(877).
org.apache.catalina.core.StandardHost.addChild(652).
org.apache.catalina.startup.HostConfig.deployDescriptor(677).
org.apache.catalina.startup.HostConfig$DeployDescriptor.run(1912).
java.util.concurrent.Executors$RunnableAdapter.call(511).
java.util.concurrent.FutureTask.run(266).
java.util.concurrent.ThreadPoolExecutor.runWorker(1142).
java.util.concurrent.ThreadPoolExecutor$Worker.run(617).
java.lang.Thread.run(745).

信息: 执行SQL语句时出现异常：原因：Cannot create JDBC driver of class '' for connect URL 'null'
信息: SQL执行错误：“Cannot create JDBC driver of class '' for connect URL 'null'”，
严重: 抛出了“org.apache.tomcat.dbcp.dbcp.SQLNestedException”异常：Cannot create JDBC driver of class '' for connect URL 'null'
堆栈：
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(1452).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(1371).
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(1044).
org.apache.catalina.core.StandardContext.listenerStop(5064).
org.apache.catalina.core.StandardContext.stopInternal(5726).
org.apache.catalina.util.LifecycleBase.stop(232).
org.apache.catalina.util.LifecycleBase.start(160).
org.apache.catalina.core.ContainerBase.addChildInternal(901).
org.apache.catalina.core.ContainerBase.addChild(877).
org.apache.catalina.core.StandardHost.addChild(652).
org.apache.catalina.startup.HostConfig.deployDescriptor(677).
org.apache.catalina.startup.HostConfig$DeployDescriptor.run(1912).
java.util.concurrent.Executors$RunnableAdapter.call(511).
java.util.concurrent.FutureTask.run(266).
java.util.concurrent.ThreadPoolExecutor.runWorker(1142).
java.util.concurrent.ThreadPoolExecutor$Worker.run(617).
java.lang.Thread.run(745).

九月 07, 2015 4:36:05 下午 org.apache.catalina.core.StandardContext listenerStop
严重: Exception sending context destroyed event to listener instance of class com.tansuosoft.discoverx.web.ContextListener
common.exception.DBException: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
	at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5726)
	at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:160)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
	at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:677)
	at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1912)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1452)
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
	... 18 more
Caused by: java.sql.SQLException: No suitable driver
	at java.sql.DriverManager.getDriver(DriverManager.java:315)
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1437)
	... 23 more

九月 07, 2015 4:36:05 下午 org.apache.catalina.startup.HostConfig deployDescriptor
信息: Deployment of configuration descriptor E:\apache-tomcat-7.0.63\conf\Catalina\localhost\osa.xml has finished in 5,836 ms

2、错误原因

     连接MySQL数据库时，配置数据库驱动和MySQL连接路径、账号、密码时，都是空导致报错

3、解决办法

     在配置文件中配置数据库驱动、账号、密码和数据库连接路径