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我正在尝试使用 eclipselink jpa 配置 spring，但在 UI 中给出一些数据并持久保存到数据库（oracle 10g）后，我面临以下错误。

java.lang.IllegalArgumentException: Object: com.web.emscs.entity.Student@1edf83b is not a known entity type.
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4128)
    at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:406)
    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.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:358)
    at $Proxy16.persist(Unknown Source)
    at com.web.daoimpl.StudentDAOImpl.saveStudent(StudentDAOImpl.java:44)
    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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    at $Proxy9.saveStudent(Unknown Source)
    at com.web.serviceimpl.StudentServiceImpl.saveStudent(StudentServiceImpl.java:29)
    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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    at $Proxy10.saveStudent(Unknown Source)
    at com.web.controller.EquipmentController.saveEquipment(EquipmentController.java:75)
    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.apache.el.parser.AstValue.invoke(AstValue.java:264)
    at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)
    at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:153)
    at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
    at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:769)
    at javax.faces.component.UICommand.broadcast(UICommand.java:300)
    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.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

这是我的来源，

设备控制器.java

package com.web.emscs.controller;

import java.io.Serializable;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.bean.SessionScoped;

import com.web.emscs.entity.Student;
import com.web.emscs.service.StudentService;

@ManagedBean
@SessionScoped
public class EquipmentController implements Serializable
{

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    @ManagedProperty(value="#{StudentService}")
    StudentService studentService;
    private String sno;
    private String name;
    private String city;

    public String getSno() {
        return sno;
    }
    public void setSno(String sno) {
        this.sno = sno;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getCity() {
        return city;
    }
    public void setCity(String city) {
        this.city = city;
    }
    public StudentService getStudentService() {
        return studentService;
    }
    public void setStudentService(StudentService studentService) {
        this.studentService = studentService;
    }
    public void saveEquipment()
    {
        Student s=new Student();
        s.setSno(sno);
        s.setName(name);
        s.setCity(city);
        try
        {
            getStudentService().saveStudent(s);
            System.out.println("Saved");
        }
        catch(Exception e)
        {
            System.out.println(e);

        }
    }

}

学生.java

package com.web.emscs.entity;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
public class Student implements Serializable 
{

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    @Id
    private String sno;
    private String name;
    private String city;
    public String getSno() {
        return sno;
    }
    public void setSno(String sno) {
        this.sno = sno;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getCity() {
        return city;
    }
    public void setCity(String city) 
    {
        this.city = city;
    }


}

StudentDAOImpl.java

package com.web.emscs.daoimpl;

import javax.persistence.EntityManagerFactory;
import org.springframework.transaction.annotation.Transactional;
import com.web.emscs.dao.StudentDAO;
import com.web.emscs.entity.Student;

@Transactional
public class StudentDAOImpl implements StudentDAO
{
    private EntityManagerFactory entityManagerFactory;

    public EntityManagerFactory getEntityManagerFactory() {
        return entityManagerFactory;
    }



    public void setEntityManagerFactory(EntityManagerFactory entityManagerFactory) {
        this.entityManagerFactory = entityManagerFactory;
    }


    @Override
    public void saveStudent(Student student) {
        // TODO Auto-generated method stub
        getEmf().createEntityManager().persist(student);
    }
}

StudentServiceImpl.java

package com.web.emscs.serviceimpl;

import com.web.emscs.dao.StudentDAO;
import com.web.emscs.entity.Student;
import com.web.emscs.service.StudentService;

public class StudentServiceImpl implements StudentService 
{
    StudentDAO studentDAO;

    public StudentDAO getStudentDAO() {
        return studentDAO;
    }

    public void setStudentDAO(StudentDAO studentDAO) {
        this.studentDAO = studentDAO;
    }

    @Override
    public void saveStudent(Student student) {
        // TODO Auto-generated method stub
        getStudentDAO().saveStudent(student);
    }


}

应用程序上下文.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
       http://www.springframework.org/schema/tx 
       http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
       http://www.springframework.org/schema/aop 
       http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context.xsd
       http://jax-ws.dev.java.net/spring/core
       http://jax-ws.dev.java.net/spring/core.xsd
       http://jax-ws.dev.java.net/spring/servlet
       http://jax-ws.dev.java.net/spring/servlet.xsd ">

    <!-- Database Configuration -->
    <tx:annotation-driven/>
    <import resource="springConfig.xml"/>
    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="EMCSSpring"/>
    <property name="dataSource" ref="dataSource"/>
    <property name="loadTimeWeaver">
            <bean
                class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver" />
        </property>
    <property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
    <property name="showSql" value="true"/>
    <property name="generateDdl" value="false"/>
    <property name="databasePlatform" value="org.eclipse.persistence.platform.database.OraclePlatform"/>

    </bean>

</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
    <property name="dataSource" ref="dataSource"/>
    </bean>
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
    <property name="url" value="jdbc:oracle:thin:@localhost:1521:xe"/>
    <property name="username" value="automobile"/>
    <property name="password" value="mobile"/>
    </bean>
    <bean id="persistenceAnnotation" class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />

</beans>

springConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

<bean id="Student" class="com.web.emscs.entity.Student"></bean>

    <bean id="StudentService" class="com.web.emscs.serviceimpl.StudentServiceImpl">
        <property name="studentDAO" ref="StudentDAO" />
    </bean>
    <bean id="StudentDAO" class="com.web.emscs.daoimpl.StudentDAOImpl">
        <property name="entityManagerFactory" ref="entityManagerFactory"></property>
    </bean>

</beans>

持久性.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="EMCSSpring">
    <class>com.web.emscs.entity.Student</class>
    </persistence-unit>

</persistence>

桌子

CREATE TABLE  "STUDENT" 
   (    "SNO" VARCHAR2(20), 
    "NAME" VARCHAR2(50), 
    "CITY" VARCHAR2(50), 
     CONSTRAINT "STUDENT_PK" PRIMARY KEY ("SNO") ENABLE
   )

让我来解决这个问题。我对这段代码做错了什么。

4

1 回答 1

0

stacktrace (com.web.entity.Student) 中 Student 类的包与源代码 ( com.web.emscs .entity.Student) 不匹配。这意味着运行的软件不是从提供的源代码编译而来的。

在显示的代码命名是统一的（com.web.emscs.entity.Student），所以执行新编译的版本将解决问题。

于 2013-02-13T21:40:01.527 回答