无法为连接URL'null'创建类''的JDBC驱动程序：Tomcat + MySQL + Spring MVC
[英]Cannot create JDBC driver of class '' for connect URL 'null' : Tomcat + MySQL + Spring MVC
问题描述
For this question I found lot of given answers but unfortunately nothing worked for me. 
对于这个问题，我找到了很多给定的答案，但不幸的是，没有任何结果适合我。 That's why I am posting the question. 这就是为什么我要发布问题。 Your help would be highly appreciated. 您的帮助将不胜感激。
My Server.xml in Tomcat under apache-tomcat-7.0.69\\conf is as follows: 我在Tomcat中的apache-tomcat-7.0.69\\conf下的Server.xml如下：
<Resource name="jdbc/spring_hibernateDB"
global="jdbc/spring_hibernateDB"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
auth="Container"
type="javax.sql.DataSource"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/spring_hibernate"
username="test"
password="password"
maxActive="100"
maxIdle="20"
minIdle="5"
maxWait="10000"
/>
My context.xml under apache-tomcat-7.0.69\\conf is as follows: 我在apache-tomcat-7.0.69\\conf下的context.xml如下：
<ResourceLink name="jdbc/mySpring_hibernateDB"
global="jdbc/spring_hibernateDB"
auth="Container"
type="javax.sql.DataSource"/>
My web.xml is as follows: 我的web.xml如下：
<resource-ref>
<res-ref-name>jdbc/mySpring_hibernateDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
My Spring-servlet.xml is as follows: 我的Spring-servlet.xml如下：
<bean id="jndiDSource" class="org.springframework.jndi.JndiObjectFactoryBean" autowire="byName">
<property name="jndiName" value="java:comp/env/jdbc/mySpring_hibernateDB" />
</bean>
<bean id="mysessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean" p:dataSource-ref="jndiDSource" p:mappingResources="employee.hbm.xml">
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
And I have included mysql jar at bot in tomcat/lib and in eclipse webapp/lib forlder. 而且我在tomcat/lib和eclipse webapp/lib forlder中的bot中包含了mysql jar。 when I am running the application I am getting the below error. 当我运行应用程序时，出现以下错误。
HTTP Status 500 - Request processing failed; nested exception is org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: Cannot open connection; uncategorized SQLException for SQL [???]; SQL state [null]; error code [0]; Cannot create JDBC driver of class '' for connect URL 'null'; nested exception is org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
--------------------------------------------------------------------------------
type Exception report
message Request processing failed; nested exception is org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: Cannot open connection; uncategorized SQLException for SQL [???]; SQL state [null]; error code [0]; Cannot create JDBC driver of class '' for connect URL 'null'; nested exception is org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: Cannot open connection; uncategorized SQLException for SQL [???]; SQL state [null]; error code [0]; Cannot create JDBC driver of class '' for connect URL 'null'; nested exception is org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:965)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: Cannot open connection; uncategorized SQLException for SQL [???]; SQL state [null]; error code [0]; Cannot create JDBC driver of class '' for connect URL 'null'; nested exception is org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
org.springframework.orm.hibernate3.HibernateAccessor.convertJdbcAccessException(HibernateAccessor.java:424)
org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:410)
org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:412)
org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:375)
org.springframework.orm.hibernate3.HibernateTemplate.loadAll(HibernateTemplate.java:585)
com.abdul.dao.EmployeeDAOImpl.fetchAll(EmployeeDAOImpl.java:38)
com.abdul.service.EmployeeService.fetchAllEmps(EmployeeService.java:27)
com.abdul.controller.EmployeeController.displayAllEmps(EmployeeController.java:54)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:440)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:428)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:919)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1452)
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:83)
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1573)
org.hibernate.loader.Loader.doQuery(Loader.java:696)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
org.hibernate.loader.Loader.doList(Loader.java:2228)
org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2125)
org.hibernate.loader.Loader.list(Loader.java:2120)
org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:118)
org.hibernate.impl.SessionImpl.list(SessionImpl.java:1596)
org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306)
org.springframework.orm.hibernate3.HibernateTemplate$5.doInHibernate(HibernateTemplate.java:591)
org.springframework.orm.hibernate3.HibernateTemplate$5.doInHibernate(HibernateTemplate.java:585)
org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:407)
org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:375)
org.springframework.orm.hibernate3.HibernateTemplate.loadAll(HibernateTemplate.java:585)
com.abdul.dao.EmployeeDAOImpl.fetchAll(EmployeeDAOImpl.java:38)
com.abdul.service.EmployeeService.fetchAllEmps(EmployeeService.java:27)
com.abdul.controller.EmployeeController.displayAllEmps(EmployeeController.java:54)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:440)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:428)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:919)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.lang.NullPointerException
sun.jdbc.odbc.JdbcOdbcDriver.getProtocol(Unknown Source)
sun.jdbc.odbc.JdbcOdbcDriver.knownURL(Unknown Source)
sun.jdbc.odbc.JdbcOdbcDriver.acceptsURL(Unknown Source)
java.sql.DriverManager.getDriver(Unknown Source)
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1437)
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:83)
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1573)
org.hibernate.loader.Loader.doQuery(Loader.java:696)
Please help. 请帮忙。 Thanks in advance. 提前致谢。
1 个解决方案
解决方案1
0 2016-07-29 10:26:28
It is complaining because there is no driver or URL defined for the JndiDS 抱怨是因为没有为JndiDS定义驱动程序或URL
You need to have the JndiDs like: 您需要具有以下JndiD：
<bean id="dataSource" class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" /> <!-- Define MySQL DB Driver name and URL -->
<property name="url" value="jdbc:mysql://localhost:3306/spring_hibernate" />
<property name="username" value="..." />
<property name="password" value="..." />
<property name="initialSize" value="5" />
<property name="maxActive" value="10" />
<property name="maxIdle" value="5" />
<property name="minIdle" value="2" />
</bean>
<bean class="org.springframework.jdbc.core.JdbcTemplate">
<constructor-arg ref="dataSource" />
</bean>
Check this example http://blog.zenika.com/2013/01/30/using-tomcat-jdbc-connection-pool-in-a-standalone-environment/ 检查此示例http://blog.zenika.com/2013/01/30/using-tomcat-jdbc-connection-pool-in-a-standalone-environment/
You can use only the JNDI name, but you have to update the Hibernate properties 您只能使用JNDI名称，但必须更新Hibernate属性
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.datasource">java:comp/env/jdbc/spring_hibernateDB</property>
<property name="hibernate.current_session_context_class">thread</property>
</session-factory>
</hibernate-configuration>
Check http://www.journaldev.com/2905/hibernate-tomcat-jndi-datasource-example-tutorial 检查http://www.journaldev.com/2905/hibernate-tomcat-jndi-datasource-example-tutorial
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