org.hibernate.MappingException:找不到实体类(使用限定类名不起作用)

Question

我正在尝试运行一个简单的SELECT FROM表(我也尝试过SELECT FROM package.Class)查询,但我一直收到此错误:

 org.hibernate.MappingException: entity class not found: demo.Agents
    at org.hibernate.mapping.PersistentClass.getMappedClass(PersistentClass.java:125)
    at org.hibernate.tuple.PropertyFactory.getGetter(PropertyFactory.java:191)
    at org.hibernate.tuple.PropertyFactory.buildIdentifierProperty(PropertyFactory.java:67)
    at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:136)
    at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:475)
    at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:133)
    at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:84)
    at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:297)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1385)
    at org.hibernate.console.ConsoleConfiguration$5.execute(ConsoleConfiguration.java:278)
    at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:63)
    at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:107)
    at org.hibernate.console.ConsoleConfiguration.buildSessionFactory(ConsoleConfiguration.java:273)
    at org.hibernate.eclipse.console.actions.ExecuteQueryAction.execute(ExecuteQueryAction.java:82)
    at org.hibernate.eclipse.console.actions.ExecuteQueryAction.run(ExecuteQueryAction.java:56)
    at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
    at org.hibernate.eclipse.console.actions.ExecuteQueryAction.runWithEvent(ExecuteQueryAction.java:60)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
    at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:452)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    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 org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
Caused by: java.lang.ClassNotFoundException: demo.Agents
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:513)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:169)
    at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:192)
    at org.hibernate.mapping.PersistentClass.getMappedClass(PersistentClass.java:122)
    ... 43 more

这是该类的hbm.xml文件(注意完整的限定符demo.Agents)

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Jun 27, 2012 19:17:46 by Hibernate Tools 3.6.0 -->
<hibernate-mapping>
    <class name="demo.Agents" table="agents" schema="public">
        <id name="id" type="int">
            <column name="id" />
            <generator class="assigned"></generator>
        </id>
        <property name="ssn" type="long">
            <column name="ssn" precision="13" scale="0" not-null="true" />
        </property>
        <property name="namee" type="string">
            <column name="namee" length="15" not-null="true" />
        </property>
        <property name="surname" type="string">
            <column name="surname" length="30" not-null="true" />
        </property>
        <property name="adress" type="string">
            <column name="adress" length="100" />
        </property>
        <property name="phone" type="string">
            <column name="phone" length="20" />
        </property>
    </class>
</hibernate-mapping>

其他一些细节,可能有用:

http://img441.imageshack.us/img441/2572/ss20120627202116.png

http://img20.imageshack.us/img20/2236/ss20120624201620.png

如果您需要任何其他印刷品,我会很乐意提供.请帮忙 :).我处在一个非常紧张的地方.谢谢(有人添加了一些更好的标签,我现在要强调,过多考虑它们)

LE

hibernatecfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>

        <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
        <property name="hibernate.connection.password">blablabla</property>
        <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/projteste</property>
        <property name="hibernate.connection.username">postgres</property>
            <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
    </session-factory>
</hibernate-configuration>

映射是在控制台配置中完成的

LE2看到评论(链接607)如果我从控制台配置中的其他映射中删除类,我会收到该错误.

这是hibernatecfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
                                         "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
 <session-factory name="">
  <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
  <property name="hibernate.connection.password">123456</property>
  <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/projteste</property>
  <property name="hibernate.connection.username">postgres</property>
  <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
  <mapping resource="demo/Clients.hbm.xml"/>
    <mapping resource="demo/Agents.hbm.xml"/>
 </session-factory>
</hibernate-configuration>

和堆栈跟踪

org.hibernate.MappingNotFoundException: resource: demo/Clients.hbm.xml not found
at org.hibernate.cfg.Configuration.addResource(Configuration.java:665)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1679)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1647)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1626)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1600)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1554)
at org.hibernate.console.ConfigurationFactory.loadConfigurationXML(ConfigurationFactory.java:351)
at org.hibernate.console.ConfigurationFactory.configureStandardConfiguration(ConfigurationFactory.java:279)
at org.hibernate.console.ConfigurationFactory.buildConfiguration(ConfigurationFactory.java:184)
at org.hibernate.console.ConfigurationFactory.createConfiguration(ConfigurationFactory.java:96)
at org.hibernate.console.ConsoleConfiguration$3.execute(ConsoleConfiguration.java:240)
at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:63)
at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:107)
at org.hibernate.console.ConsoleConfiguration.buildWith(ConsoleConfiguration.java:237)
at org.hibernate.console.ConsoleConfiguration.build(ConsoleConfiguration.java:188)
at org.hibernate.eclipse.console.workbench.ConsoleConfigurationWorkbenchAdapter.getChildren(ConsoleConfigurationWorkbenchAdapter.java:42)
at org.hibernate.eclipse.console.workbench.BasicWorkbenchAdapter.getChildren(BasicWorkbenchAdapter.java:100)
at org.hibernate.eclipse.console.workbench.BasicWorkbenchAdapter.fetchDeferredChildren(BasicWorkbenchAdapter.java:106)
at org.eclipse.ui.progress.DeferredTreeContentManager$1.run(DeferredTreeContentManager.java:235)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)  

K4

  org.hibernate.console.HibernateConsoleRuntimeException: Could not compute classpath
    at org.hibernate.eclipse.console.EclipseLaunchConsoleConfigurationPreferences.getCustomClassPathURLS(EclipseLaunchConsoleConfigurationPreferences.java:103)
    at org.hibernate.eclipse.console.utils.ProjectUtils.findJavaProjects(ProjectUtils.java:302)
    at org.hibernate.eclipse.console.workbench.ProjectCompilerVersionChecker.validateProjectComplianceLevel(ProjectCompilerVersionChecker.java:35)
    at org.hibernate.eclipse.console.workbench.ConsoleConfigurationWorkbenchAdapter.getChildren(ConsoleConfigurationWorkbenchAdapter.java:37)
    at org.hibernate.eclipse.console.workbench.BasicWorkbenchAdapter.getChildren(BasicWorkbenchAdapter.java:100)
    at org.hibernate.eclipse.console.workbench.BasicWorkbenchAdapter.fetchDeferredChildren(BasicWorkbenchAdapter.java:106)
    at org.eclipse.ui.progress.DeferredTreeContentManager$1.run(DeferredTreeContentManager.java:235)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.eclipse.core.runtime.CoreException: Unable to restore classpath entry.
    at org.eclipse.jdt.launching.JavaRuntime.abort(JavaRuntime.java:1376)
    at org.eclipse.jdt.launching.JavaRuntime.abort(JavaRuntime.java:1361)
    at org.eclipse.jdt.launching.JavaRuntime.newRuntimeClasspathEntry(JavaRuntime.java:731)
    at org.eclipse.jdt.launching.StandardClasspathProvider.recoverRuntimePath(StandardClasspathProvider.java:100)
    at org.eclipse.jdt.launching.StandardClasspathProvider.computeUnresolvedClasspath(StandardClasspathProvider.java:65)
    at org.eclipse.jdt.launching.JavaRuntime.computeUnresolvedRuntimeClasspath(JavaRuntime.java:1215)
    at org.hibernate.eclipse.console.utils.ClassLoaderHelper.getClasspath(ClassLoaderHelper.java:146)
    at org.hibernate.eclipse.console.EclipseLaunchConsoleConfigurationPreferences.getCustomClassPathURLS(EclipseLaunchConsoleConfigurationPreferences.java:94)
    ... 7 more
Caused by: org.xml.sax.SAXException: FWK005 parse may not be called while parsing.
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:263)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
    at org.eclipse.jdt.launching.JavaRuntime.newRuntimeClasspathEntry(JavaRuntime.java:708)
    ... 12 more

Answer 1

你忘了在主配置文件中声明映射文件:

<session-factory>
    ...
    <mapping resource="demo/Clients.hbm.xml"/>
    <mapping resource="demo/Agents.hbm.xml"/>
</session-factory>

我将在此重复我的评论:实体应以单数形式命名:Agent,Client.调整自动生成(请参阅http://docs.jboss.org/tools/3.0.1.GA/en/hibernatetools/html_single/index.html#tab_and_col),或者之后重构生成的代码,因为所有的应用程序代码将基于这些名字,这是真正可怕的调用的Agent一个Agents.代码将令人困惑且难以理解.无论如何,实体是您的应用程序的核心,并且应该包含除了setter和getter之外的其他方法.因此自动生成可以启动,但之后应该忘记.

Answer 2

并检查 .hbm.xml 文件，该类名完全符合表名。例如：

<class name="com.test.Emp" table="Emp">.. </class>

Answer 3

在你的xxx.hbm.xml使用限定类名:package_name.xxx在hibernate-mapping元素中.这是POJO的jboss规范.