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發現JDBC的EclipseLink沒有合適的驅動程序：MySQL的

2012-01-03 125 views
1

錯誤發現JDBC的EclipseLink沒有合適的驅動程序：MySQL的

沒有合適的驅動程序找到了JDBC的：mysql：//本地主機：3306/mazedb

完整的錯誤

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>

構建路徑中包含mysql連接器

來源

2012-01-03 TGM

回答

3

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

此異常基本上具有2個可能的原因。

  1. 的JDBC URL是錯誤的（基本上，Driver#acceptsURL()返回false所有的JDBC驅動程序至今加載）。
  2. 根本沒有加載JDBC驅動程序（所以它在運行時類路徑中丟失或者JDBC驅動程序類名稱中存在拼寫錯誤）。

到目前爲止，JDBC URL和驅動程序類名看起來不錯。所以驅動程序根本就不在運行時類路徑中。

The mysql connector is included in the build path

的JDBC驅動程序需要存在於web應用程序的運行時類路徑。如果是本地持久性單元，則需要將JDBC驅動程序JAR文件放置在/WEB-INF/lib文件夾中。

這個例外表明情況並非如此。將JAR文件放置在某個隨機位置，並手動將文件添加到構建路徑，而不在部署程序集中指定它可能導致此異常。這個不對。只需將JAR文件放在/WEB-INF/lib文件夾中，這樣Eclipse就可以完成所有必要的魔術設置，而無需觸摸項目屬性中的任何內容。

無關到具體的問題，可以考慮容器管理事務（集交易類型JTA，而不是本地資源）。它將大大減少EJB中的樣板代碼來管理事務。您只需創建容器管理的JNDI數據源，然後將JDBC驅動程序放置在服務器的/lib中。

來源

2012-01-04 13:01:58 BalusC

+0

我在Glassfish3上創建了一個ConnectionPoolDataSource並將連接器放在Glassfish的lib中。現在它似乎工作正常。這是做到這一點的正確方法嗎？當我在另一個Web容器中運行我的應用程序時會發生什麼情況，因爲知道這可能不會有相同的設置？ – TGM 2012-01-04 14:43:01

+1

您只需在另一個容器中配置具有相同JNDI名稱的數據源（或者將JNDI名稱外部配置爲環境變量）即可。只要它支持連接池和JTA事務（所有Java EE 6容器都支持），它究竟是什麼類型的數據源並不重要。 – BalusC 2012-01-04 15:01:59

1

這是在服務器上運行嗎？你的項目中有沒有mysql數據庫驅動jar文件？

這裏是我的驅動程序設置看起來像在日食。您通過數據庫透視圖進入該屏幕並添加新的數據源。您包含驅動程序jar文件，以便知道在哪裏可以找到驅動程序。如果這是在服務器上，請將jar文件放在lib或deploy文件夾中，以便找到驅動程序。

Mysql setup in eclipse

來源

2012-01-04 00:18:30 Logan

+0

我試了你的方式，但它引發了同樣的錯誤：找不到合適的驅動程序爲jdbc：mysql：// localhost：3306/mazedb – TGM 2012-01-04 07:43:11

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