Question

Hibernate对我很有用，直到我尝试包含C3P0，此时我遇到了问题。我已将这些添加到我的pom.xml中：

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-c3p0</artifactId>
        <version>5.0.7.Final</version>
    </dependency>
    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.5.2</version>
    </dependency>

这些是我的hibernate.cfg.xml：

<property name="hibernate.c3p0.max_statements">0</property>
<property name="hibernate.c3p0.timeout">100</property>
<property name="hibernate.c3p0.idle_test_period">100</property>
<property name="hibernate.c3p0.min_size">10</property>
<property name="hibernate.connection.provider_class">org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider</property>
<property name="hibernate.c3p0.acquire_increment">1</property>
<property name="hibernate.c3p0.max_size">100</property>

当我这样做，并尝试使用JBoss的Hibernate Tools执行一些HQL时，我得到以下异常：

java.lang.NoSuchMethodError: org.hibernate.engine.jdbc.connections.internal.ConnectionProviderInitiator.extractIsolation(Ljava/util/Map;)Ljava/lang/Integer;
at org.hibernate.c3p0.internal.C3P0ConnectionProvider.configure(C3P0ConnectionProvider.java:200)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:234)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.buildJdbcConnectionAccess(JdbcServicesImpl.java:260)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:94)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:234)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1887)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1845)
at org.jboss.tools.hibernate.runtime.v_4_3.internal.ConfigurationFacadeImpl.buildTargetSessionFactory(ConfigurationFacadeImpl.java:24)
at org.jboss.tools.hibernate.runtime.common.AbstractConfigurationFacade.buildSessionFactory(AbstractConfigurationFacade.java:169)
at org.hibernate.console.ConsoleConfiguration$5.execute(ConsoleConfiguration.java:285)
at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:63)
at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:108)
at org.hibernate.console.ConsoleConfiguration.buildSessionFactory(ConsoleConfiguration.java:280)
at org.hibernate.eclipse.console.actions.ExecuteQueryAction.execute(ExecuteQueryAction.java:81)
at org.hibernate.eclipse.console.actions.ExecuteQueryAction.run(ExecuteQueryAction.java:55)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.hibernate.eclipse.console.actions.ExecuteQueryAction.runWithEvent(ExecuteQueryAction.java:59)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:462)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)

代码在运行时正确运行，似乎尊重我的C3P0设置。

Answer 1

c3p0 0.9.2.x已旧，不支持JDBC4方法。

请更新到当前版本，c3p0-0.9.5.2。

执行HQL和C3P0时启用NoSuchMethodError

1 个答案: