那些遇到过的问题

Jasper with Hibernate - 找不到实体类

6 java mysql hibernate hql jasper-reports

我正在尝试使用hibernate连接创建一个jasper,如教程 http://www.tutorialcenters.com/index.php/how-to-design-report-using-jasperreport-hibernate-connection/中所示.

我完全按照教程中的说明完成,但是当我得到的时候 entity class not found: mappings.EmployeeMaster

任何人都可以告诉我一些解决方案....

我在netbeans IDE中的samplehiber项目结构 - 点击

设置类路径 - 点击

设置Classpath

使用hibernate配置与MySQL数据库建立连接 - 点击

的hibernate.cfg.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.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hse</property>
    <property name="hibernate.connection.username">root</property>
    <mapping resource="mappings/EmployeeMaster.hbm.xml"/>
  </session-factory>
</hibernate-configuration>
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hibernate.reveng.xml中

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-reverse-engineering PUBLIC "-//Hibernate/Hibernate Reverse Engineering DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-reverse-engineering-3.0.dtd">
<hibernate-reverse-engineering>
  <schema-selection match-catalog="hse"/>
  <table-filter match-name="employee_master"/>

</hibernate-reverse-engineering>
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EmployeeMaster.hbm.xml

<?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 Sep 15, 2013 11:07:05 PM by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping >
    <class name="mappings.EmployeeMaster" table="employee_master" catalog="hse">
        <id name="id" type="java.lang.Integer">
            <column name="id" />
            <generator class="identity" />
        </id>
        <property name="userCode" type="string">
            <column name="user_code" length="60" not-null="true" unique="true" />
        </property>
        <property name="firstName" type="string">
            <column name="first_name" length="60" />
        </property>
        <property name="lastName" type="string">
            <column name="last_name" length="60" />
        </property>
        <property name="deptId" type="java.lang.Integer">
            <column name="dept_id" />
        </property>
        <property name="designationId" type="java.lang.Integer">
            <column name="designation_id" />
        </property>
        <property name="empEmail" type="string">
            <column name="emp_email" length="60" />
        </property>
        <property name="status" type="string">
            <column name="status" length="20" />
        </property>
        <property name="createdDate" type="timestamp">
            <column name="created_date" length="19" />
        </property>
        <property name="modifiedDate" type="timestamp">
            <column name="modified_date" length="19" />
        </property>
    </class>
</hibernate-mapping>
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EmployeeMaster.java

package mappings;
    import java.util.Date;
    public class EmployeeMaster  implements java.io.Serializable {


         private Integer id;
         private String userCode;
         private String firstName;
         private String lastName;
         private Integer deptId;
         private Integer designationId;
         private String empEmail;
         private String status;
         private Date createdDate;
         private Date modifiedDate;

        public EmployeeMaster() {
        }


        public EmployeeMaster(String userCode) {
            this.userCode = userCode;
        }
        public EmployeeMaster(String userCode, String firstName, String lastName, Integer deptId, Integer designationId, String empEmail, String status, Date createdDate, Date modifiedDate) {
           this.userCode = userCode;
           this.firstName = firstName;
           this.lastName = lastName;
           this.deptId = deptId;
           this.designationId = designationId;
           this.empEmail = empEmail;
           this.status = status;
           this.createdDate = createdDate;
           this.modifiedDate = modifiedDate;
        }

        public Integer getId() {
            return this.id;
        }

        public void setId(Integer id) {
            this.id = id;
        }
        public String getUserCode() {
            return this.userCode;
        }

        public void setUserCode(String userCode) {
            this.userCode = userCode;
        }
        public String getFirstName() {
            return this.firstName;
        }

        public void setFirstName(String firstName) {
            this.firstName = firstName;
        }
        public String getLastName() {
            return this.lastName;
        }

        public void setLastName(String lastName) {
            this.lastName = lastName;
        }
        public Integer getDeptId() {
            return this.deptId;
        }

        public void setDeptId(Integer deptId) {
            this.deptId = deptId;
        }
        public Integer getDesignationId() {
            return this.designationId;
        }

        public void setDesignationId(Integer designationId) {
            this.designationId = designationId;
        }
        public String getEmpEmail() {
            return this.empEmail;
        }

        public void setEmpEmail(String empEmail) {
            this.empEmail = empEmail;
        }
        public String getStatus() {
            return this.status;
        }

        public void setStatus(String status) {
            this.status = status;
        }
        public Date getCreatedDate() {
            return this.createdDate;
        }

        public void setCreatedDate(Date createdDate) {
            this.createdDate = createdDate;
        }
        public Date getModifiedDate() {
            return this.modifiedDate;
        }

        public void setModifiedDate(Date modifiedDate) {
            this.modifiedDate = modifiedDate;
        }
    }
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IDE日志

org.hibernate.MappingException: entity class not found: mappings.EmployeeMaster
        at org.hibernate.mapping.PersistentClass.getMappedClass(PersistentClass.java:122)
        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:147)
        at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:457)
        at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:131)
        at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:84)
        at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:261)
        at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1327)
        at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)
        at com.jaspersoft.ireport.designer.connection.JRHibernateConnection.getSessionFactory(JRHibernateConnection.java:130)
        at com.jaspersoft.ireport.designer.connection.JRHibernateConnection$1.run(JRHibernateConnection.java:157)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
        at java.awt.EventQueue.access$000(EventQueue.java:101)
        at java.awt.EventQueue$3.run(EventQueue.java:666)
        at java.awt.EventQueue$3.run(EventQueue.java:664)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:121)
        at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
        at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
        at java.awt.Dialog.show(Dialog.java:1072)
        at java.awt.Component.show(Component.java:1651)
        at java.awt.Component.setVisible(Component.java:1603)
        at java.awt.Window.setVisible(Window.java:1013)
        at java.awt.Dialog.setVisible(Dialog.java:1003)
        at com.jaspersoft.ireport.designer.connection.gui.ConnectionsDialog.jButtonNewParameterActionPerformed(ConnectionsDialog.java:578)
        at com.jaspersoft.ireport.designer.connection.gui.ConnectionsDialog.access$400(ConnectionsDialog.java:47)
        at com.jaspersoft.ireport.designer.connection.gui.ConnectionsDialog$7.actionPerformed(ConnectionsDialog.java:221)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
        at java.awt.Component.processMouseEvent(Component.java:6505)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
        at java.awt.Component.processEvent(Component.java:6270)
        at java.awt.Container.processEvent(Container.java:2229)
        at java.awt.Component.dispatchEventImpl(Component.java:4861)
        at java.awt.Container.dispatchEventImpl(Container.java:2287)
        at java.awt.Component.dispatchEvent(Component.java:4687)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
        at java.awt.Container.dispatchEventImpl(Container.java:2273)
        at java.awt.Window.dispatchEventImpl(Window.java:2713)
        at java.awt.Component.dispatchEvent(Component.java:4687)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
        at java.awt.EventQueue.access$000(EventQueue.java:101)
        at java.awt.EventQueue$3.run(EventQueue.java:666)
        at java.awt.EventQueue$3.run(EventQueue.java:664)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
        at java.awt.EventQueue$4.run(EventQueue.java:680)
        at java.awt.EventQueue$4.run(EventQueue.java:678)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:121)
        at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
        at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
        at java.awt.Dialog.show(Dialog.java:1072)
        at java.awt.Component.show(Component.java:1651)
        at java.awt.Component.setVisible(Component.java:1603)
        at java.awt.Window.setVisible(Window.java:1013)
        at java.awt.Dialog.setVisible(Dialog.java:1003)
        at com.jaspersoft.ireport.designer.connection.gui.ConnectionsDialog.setVisible(ConnectionsDialog.java:651)
        at com.jaspersoft.ireport.designer.menu.DatasourcesAction.performAction(DatasourcesAction.java:46)
        at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:118)
        at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:77)
        at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:114)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
        at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
        at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
        at java.awt.Component.processMouseEvent(Component.java:6505)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
        at org.openide.awt.ToolbarButton.processMouseEvent(ToolbarButton.java:61)
        at java.awt.Component.processEvent(Component.java:6270)
        at java.awt.Container.processEvent(Container.java:2229)
        at java.awt.Component.dispatchEventImpl(Component.java:4861)
        at java.awt.Container.dispatchEventImpl(Container.java:2287)
        at java.awt.Component.dispatchEvent(Component.java:4687)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
        at java.awt.Container.dispatchEventImpl(Container.java:2273)
        at java.awt.Window.dispatchEventImpl(Window.java:2713)
        at java.awt.Component.dispatchEvent(Component.java:4687)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
        at java.awt.EventQueue.access$000(EventQueue.java:101)
        at java.awt.EventQueue$3.run(EventQueue.java:666)
        at java.awt.EventQueue$3.run(EventQueue.java:664)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
        at java.awt.EventQueue$4.run(EventQueue.java:680)
        at java.awt.EventQueue$4.run(EventQueue.java:678)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by: java.lang.ClassNotFoundException: mappings.EmployeeMaster
        at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
        at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:252)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:186)
        at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:123)
        at org.hibernate.mapping.PersistentClass.getMappedClass(PersistentClass.java:119)
        ... 123 more
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rsa*_*hez 3

您的类路径中需要有一个EmployeeMaster.class文件。确保重建您的项目。查看工具在何处构建.class文件并将该目录添加到类路径中。

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