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发现JDBC的EclipseLink没有合适的驱动程序：MySQL的

2012-01-03 117 views
1

错误发现JDBC的EclipseLink没有合适的驱动程序：MySQL的

没有合适的驱动程序找到了JDBC的：mysql：//本地主机：3306/mazedb

完整的错误

INFO: [EL Info]: 2012-01-03 
23:27:35.522--ServerSession(11375975)--EclipseLink, version: Eclipse 
Persistence Services - 2.3.0.v20110604-r9504 

INFO: [EL Severe]: 2012-01-03 
23:27:35.528--ServerSession(11375975)--Local Exception Stack: 
Exception [EclipseLink-4002] (Eclipse Persistence Services - 
2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DatabaseException Internal 
Exception: java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb Error Code: 0 at 
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:324) 
    at 
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:319) 
    at 
org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:138) 
    at 
org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162) 
    at 
org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:582) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:206) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:472) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:290) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:268) 
    at 
com.maze.service.AccountService.validateLogin(AccountService.java:18) 
    at 
com.maze.controller.AccountController.performLogin(AccountController.java:31) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597)  at 
com.sun.el.parser.AstValue.invoke(AstValue.java:234) at 
com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297) 
    at 
com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) 
    at 
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88) 
    at 
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:315) at 
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794) 
    at 
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259) 
    at 
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at 
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) at 
org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) 
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281) 
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) 
    at 
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) 
    at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at 
com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) 
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) 
    at 
org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) 
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) 
    at 
com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) 
    at 
com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) 
    at 
com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725) 
    at 
com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019) 
    at 
com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225) 
    at 
com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) 
    at 
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) 
    at 
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) 
    at 
com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) 
    at 
com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) 
    at 
com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) 
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)  at 
com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) 
    at 
com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) 
    at java.lang.Thread.run(Thread.java:662) Caused by: 
java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb at 
java.sql.DriverManager.getConnection(DriverManager.java:602) at 
java.sql.DriverManager.getConnection(DriverManager.java:154) at 
org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:98) 
    ... 51 more 

WARNING: #{accountController.performLogin}: 
javax.persistence.PersistenceException: Exception [EclipseLink-4002] 
(Eclipse Persistence Services - 2.3.0.v20110604-r9504): 
org.eclipse.persistence.exceptions.DatabaseException Internal 
Exception: java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb Error Code: 0 
javax.faces.FacesException: #{accountController.performLogin}: 
javax.persistence.PersistenceException: Exception [EclipseLink-4002] 
(Eclipse Persistence Services - 2.3.0.v20110604-r9504): 
org.eclipse.persistence.exceptions.DatabaseException Internal 
Exception: java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb Error Code: 0 at 
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:315) at 
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794) 
    at 
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259) 
    at 
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at 
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) at 
org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) 
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281) 
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) 
    at 
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) 
    at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at 
com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) 
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) 
    at 
org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) 
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) 
    at 
com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) 
    at 
com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) 
    at 
com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725) 
    at 
com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019) 
    at 
com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225) 
    at 
com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) 
    at 
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) 
    at 
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) 
    at 
com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) 
    at 
com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) 
    at 
com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) 
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)  at 
com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) 
    at 
com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) 
    at java.lang.Thread.run(Thread.java:662) Caused by: 
javax.faces.el.EvaluationException: 
javax.persistence.PersistenceException: Exception [EclipseLink-4002] 
(Eclipse Persistence Services - 2.3.0.v20110604-r9504): 
org.eclipse.persistence.exceptions.DatabaseException Internal 
Exception: java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb Error Code: 0 at 
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102) 
    at 
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 
    ... 32 more Caused by: javax.persistence.PersistenceException: 
Exception [EclipseLink-4002] (Eclipse Persistence Services - 
2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DatabaseException Internal 
Exception: java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb Error Code: 0 at 
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:501) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:290) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:268) 
    at 
com.maze.service.AccountService.validateLogin(AccountService.java:18) 
    at 
com.maze.controller.AccountController.performLogin(AccountController.java:31) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597)  at 
com.sun.el.parser.AstValue.invoke(AstValue.java:234) at 
com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297) 
    at 
com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) 
    at 
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88) 
    ... 33 more Caused by: Exception [EclipseLink-4002] (Eclipse 
Persistence Services - 2.3.0.v20110604-r9504): 
org.eclipse.persistence.exceptions.DatabaseException Internal 
Exception: java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb Error Code: 0 at 
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:324) 
    at 
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:319) 
    at 
org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:138) 
    at 
org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162) 
    at 
org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:582) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:206) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:472) 
    ... 47 more Caused by: java.sql.SQLException: No suitable driver 
found for jdbc:mysql://localhost:3306/mazedb at 
java.sql.DriverManager.getConnection(DriverManager.java:602) at 
java.sql.DriverManager.getConnection(DriverManager.java:154) at 
org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:98) 
    ... 51 more 

INFO: Exit : invoke_application 5 WARNING: StandardWrapperValve[Faces 
Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw 
exception javax.faces.el.EvaluationException: 
javax.persistence.PersistenceException: Exception [EclipseLink-4002] 
(Eclipse Persistence Services - 2.3.0.v20110604-r9504): 
org.eclipse.persistence.exceptions.DatabaseException Internal 
Exception: java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb Error Code: 0 at 
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102) 
    at 
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:315) at 
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794) 
    at 
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259) 
    at 
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at 
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) at 
org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) 
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281) 
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) 
    at 
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) 
    at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at 
com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) 
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) 
    at 
org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) 
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) 
    at 
com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) 
    at 
com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) 
    at 
com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725) 
    at 
com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019) 
    at 
com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225) 
    at 
com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) 
    at 
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) 
    at 
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) 
    at 
com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) 
    at 
com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) 
    at 
com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) 
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)  at 
com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) 
    at 
com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) 
    at java.lang.Thread.run(Thread.java:662) Caused by: 
javax.persistence.PersistenceException: Exception [EclipseLink-4002] 
(Eclipse Persistence Services - 2.3.0.v20110604-r9504): 
org.eclipse.persistence.exceptions.DatabaseException Internal 
Exception: java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb Error Code: 0 at 
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:501) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:290) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:268) 
    at 
com.maze.service.AccountService.validateLogin(AccountService.java:18) 
    at 
com.maze.controller.AccountController.performLogin(AccountController.java:31) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597)  at 
com.sun.el.parser.AstValue.invoke(AstValue.java:234) at 
com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297) 
    at 
com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) 
    at 
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88) 
    ... 33 more Caused by: Exception [EclipseLink-4002] (Eclipse 
Persistence Services - 2.3.0.v20110604-r9504): 
org.eclipse.persistence.exceptions.DatabaseException Internal 
Exception: java.sql.SQLException: No suitable driver found for 
jdbc:mysql://localhost:3306/mazedb Error Code: 0 at 
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:324) 
    at 
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:319) 
    at 
org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:138) 
    at 
org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162) 
    at 
org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:582) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:206) 
    at 
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:472) 
    ... 47 more Caused by: java.sql.SQLException: No suitable driver 
found for jdbc:mysql://localhost:3306/mazedb at 
java.sql.DriverManager.getConnection(DriverManager.java:602) at 
java.sql.DriverManager.getConnection(DriverManager.java:154) at 
org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:98) 
    ... 51 more

persistence.xml

<?xml version="1.0" encoding="UTF-8"?> 
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"> 

    <persistence-unit name="Maze" transaction-type="RESOURCE_LOCAL"> 
     <properties> 
      <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/mazedb"/> 
      <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/> 
      <property name="javax.persistence.jdbc.user" value="maze"/> 
      <property name="javax.persistence.jdbc.password" value="maze"/> 
     </properties> 

    </persistence-unit> 
</persistence>

构建路径中包含mysql连接器

来源

2012-01-03 TGM

回答

3

No suitable driver found for jdbc:mysql://localhost:3306/mazedb

此异常基本上具有2个可能的原因。

  1. 的JDBC URL是错误的（基本上，Driver#acceptsURL()返回false所有的JDBC驱动程序至今加载）。
  2. 根本没有加载JDBC驱动程序（所以它在运行时类路径中丢失或者JDBC驱动程序类名称中存在拼写错误）。

到目前为止，JDBC URL和驱动程序类名看起来不错。所以驱动程序根本就不在运行时类路径中。

The mysql connector is included in the build path

的JDBC驱动程序需要存在于web应用程序的运行时类路径。如果是本地持久性单元，则需要将JDBC驱动程序JAR文件放置在/WEB-INF/lib文件夹中。

这个例外表明情况并非如此。将JAR文件放置在某个随机位置，并手动将文件添加到构建路径，而不在部署程序集中指定它可能导致此异常。这个不对。只需将JAR文件放在/WEB-INF/lib文件夹中，这样Eclipse就可以完成所有必要的魔术设置，而无需触摸项目属性中的任何内容。

无关到具体的问题，可以考虑容器管理事务（集交易类型JTA，而不是本地资源）。它将大大减少EJB中的样板代码来管理事务。您只需创建容器管理的JNDI数据源，然后将JDBC驱动程序放置在服务器的/lib中。

来源

2012-01-04 13:01:58 BalusC

+0

我在Glassfish3上创建了一个ConnectionPoolDataSource并将连接器放在Glassfish的lib中。现在它似乎工作正常。这是做到这一点的正确方法吗？当我在另一个Web容器中运行我的应用程序时会发生什么情况，因为知道这可能不会有相同的设置？ – TGM 2012-01-04 14:43:01

+1

您只需在另一个容器中配置具有相同JNDI名称的数据源（或者将JNDI名称外部配置为环境变量）即可。只要它支持连接池和JTA事务（所有Java EE 6容器都支持），它究竟是什么类型的数据源并不重要。 – BalusC 2012-01-04 15:01:59

1

这是在服务器上运行吗？你的项目中有没有mysql数据库驱动jar文件？

这里是我的驱动程序设置看起来像在日食。您通过数据库透视图进入该屏幕并添加新的数据源。您包含驱动程序jar文件，以便知道在哪里可以找到驱动程序。如果这是在服务器上，请将jar文件放在lib或deploy文件夹中，以便找到驱动程序。

Mysql setup in eclipse

来源

2012-01-04 00:18:30 Logan

+0

我试了你的方式，但它引发了同样的错误：找不到合适的驱动程序为jdbc：mysql：// localhost：3306/mazedb – TGM 2012-01-04 07:43:11

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