Java 带Hibernate的JPA-如果实现复合键，则缺少列

JPA/Hibernate缺少列

我使用JPA和Hibernate作为提供程序。我有一个实体类，它有一个id列作为主键。这很好，但我现在不得不修改它，以便主键是由两列组成的复合键。为了实现复合键，我使用了这里显示的示例

以下是最后的课程：

主键

@Embeddable
public class DocumentPK implements Serializable {


    private static final long serialVersionUID = 1L;

    @Basic(optional = false)
    @Column(name="P_ID")
    private String pId;

    @Basic(optional = false)
    @Column(name="P_NAME")
    private String pName;

    public DocumentPK() {
    }

    public DocumentPK(String pId, int pName) {
        this.pId = pId;
        this.pName = pName;
    }

    public String getPId() {
        return pId;
    }

    public void setPId(String pId) {
        this.pId = pId;
    }

    public String getPName() {
        return pName;
    }

    public void setPName(String pName) {
        this.pName = pName;
    }

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (pId != null ? pId.hashCode() : 0);
        hash += (int) pName;
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof DocumentPK)) {
            return false;
        }
        DocumentPK other = (DocumentPK) object;
        if ((this.pId == null && other.pId != null) || (this.pId != null && !this.pId.equals(other.pId))) {
            return false;
        }
        if (this.pName != other.pName) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "[ pId=" + pId + ", pName=" + pName + " ]";
    }    
}

在实现了上述主键之后，我更新了Entity类以“嵌入”主键，如下所示

@Entity
@Table(name="DOCUMENTS")

public class CustomerDocument implements Serializable{

    private static final long serialVersionUID = 6373600479711119252L;

    private     DocumentPK  id; 
    private     String  p_code;

    @EmbeddedId
    public DocumentPK getId() {
        return id;
    }

    public void setId(DocumentPK id) {
        this.id = id;
    }

    @Column(name="P_CODE")
    public String getPCode() {
        return p_code;
    }       
}

现在我已经检查了“DOCUMENTS”表，所有列都在那里。我甚至使用同一个用户登录到MySQL，我可以看到表和相关列。如果我运行上面的命令，它会抱怨找不到P_ID列。我忘在什么地方了吗

18:30:45,279 ERROR [TestContextManager] Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@1d349e2] to prepare test instance [com.bt.msm.ds.dao.BatchNumberDaoTest@97d3f0]
java.lang.IllegalStateException: Failed to load ApplicationContext
    at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:157)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:321)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:288)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:290)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
    at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0' defined in class path resource [my-spring-ds.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [my-spring-jpa.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: myPersistenceUnit] Unable to build EntityManagerFactory
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:728)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:449)
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:103)
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:1)
    at org.springframework.test.context.support.DelegatingSmartContextLoader.loadContext(DelegatingSmartContextLoader.java:228)
    at org.springframework.test.context.TestContext.loadApplicationContext(TestContext.java:124)
    at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:148)
    ... 24 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [msm-spring-jpa.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: myPersistenceUnit] Unable to build EntityManagerFactory
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:400)
    at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:275)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.detectPersistenceExceptionTranslators(PersistenceExceptionTranslationInterceptor.java:139)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.<init>(PersistenceExceptionTranslationInterceptor.java:79)
    at org.springframework.dao.annotation.PersistenceExceptionTranslationAdvisor.<init>(PersistenceExceptionTranslationAdvisor.java:70)
    at org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor.setBeanFactory(PersistenceExceptionTranslationPostProcessor.java:103)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1475)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1443)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
    ... 36 more
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: myPersistenceUnit] Unable to build EntityManagerFactory
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:892)
    at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:73)
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:257)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)
    ... 51 more
Caused by: org.hibernate.HibernateException: Missing column: pId in mydb.documents
    at org.hibernate.mapping.Table.validateColumns(Table.java:277)
    at org.hibernate.cfg.Configuration.validateSchema(Configuration.java:1174)
    at org.hibernate.tool.hbm2ddl.SchemaValidator.validate(SchemaValidator.java:139)
    at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:387)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1385)
    at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:954)
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:883)
    ... 56 more

18:30:45279错误[TestContextManager]在允许TestExecutionListener[org.springframework.test.context.support]时捕获异常。DependencyInjectionTestExecutionListener@1d349e2]准备测试实例[com.bt.msm.ds.dao]。BatchNumberDaoTest@97d3f0]
java.lang.IllegalStateException:未能加载ApplicationContext
位于org.springframework.test.context.TestContext.getApplicationContext（TestContext.java:157）
位于org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies（DependencyInjectionTestExecutionListener.java:109）
位于org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance（DependencyInjectionTestExecutionListener.java:75）
位于org.springframework.test.context.TestContextManager.prepareTestInstance（TestContextManager.java:321）
位于org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest（SpringJUnit4ClassRunner.java:211）
位于org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall（SpringJUnit4ClassRunner.java:288）
位于org.junit.internal.runners.model.ReflectiveCallable.run（ReflectiveCallable.java:15）
位于org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock（SpringJUnit4ClassRunner.java:290）
位于org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild（SpringJUnit4ClassRunner.java:231）
位于org.junit.runners.BlockJUnit4ClassRunner.runChild（BlockJUnit4ClassRunner.java:46）
位于org.junit.runners.ParentRunner.runChildren（ParentRunner.java:180）
访问org.junit.runners.ParentRunner.access$000（ParentRunner.java:41）
位于org.junit.runners.ParentRunner$1.evaluate（ParentRunner.java:173）
位于org.junit.internal.runners.statements.RunBefores.evaluate（RunBefores.java:28）
位于org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate（RunBeforeTestClassCallbacks.java:61）
位于org.junit.internal.runners.statements.runafter.evaluate（runafter.java:31）
位于org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate（RunAfterTestClassCallbacks.java:71）
位于org.junit.runners.ParentRunner.run（ParentRunner.java:220）
位于org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run（SpringJUnit4ClassRunner.java:174）
位于org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run（JUnit4TestReference.java:50）
位于org.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）
位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:467）
位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:683）
位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:390）
位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main（RemoteTestRunner.java:197）
原因：org.springframework.beans.factory.BeanCreationException:创建名为“org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0”的bean时出错，该bean的初始化失败；嵌套异常为org.springframework.beans.factory.BeanCreationException:创建在类路径资源[my spring jpa.xml]中定义的名为“entityManagerFactory”的bean时出错：调用init方法失败；嵌套异常为javax.persistence.PersistenceException:[PersistenceUnit:myPersistenceUnit]无法生成EntityManagerFactory
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:527）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:456）
位于org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject（AbstractBeanFactory.java:294）
位于org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:225）
位于org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:291）
位于org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:197）
位于org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors（AbstractApplicationContext.java:728）
位于org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:449）
位于org.springframework.test.context.support.AbstractGenericContextLoader.loadContext（AbstractGenericContextLoader.java:103）
位于org.springframework.test.context.support.AbstractGenericContextLoader.loadContext（AbstractGenericContextLoader.java:1）
位于org.springframework.test.context.support.DelegatingSmartContextLoader.loadContext（DelegatingSmartContextLoader.java:228）
位于org.springframework.test.context.TestContext.loadApplicationContext（TestContext.java:124）
位于org.springframework.test.context.TestContext.getApplicationContext（TestContext.java:148）
... 还有24个
原因：org.springframework.beans.factory.BeanCreationExcepti
   public String getpId() {
      return pId;
   }

   public void setpId(String pId) {
      this.pId = pId;
   }

public String getPId() {
    return pId;
}

public void setPId(String pId) {
    this.pId = pId;
}

@Embeddable
public class DocumentPK implements Serializable {
    
    @Column(name="P_ID")
    private String pId;

    
    @Column(name="P_NAME")
    private String pName;

    //get set………
}


@Entity
@Table(name="DOCUMENTS")
public class CustomerDocument implements Serializable{

    private static final long serialVersionUID = 6373600479711119252L;

    @Id
    private     DocumentPK  id; 
    private     String  p_code;//hoping this is not typo better pCode

   //get set ……   
}

public class DocumentPK implements Serializable {

    private static final long serialVersionUID = 1L;

    private String pId;

    private String pName;
    /* The rest of the class, notice the missing annotations */

@Entity
@Table(name="DOCUMENTS")
@IdClass(DocumentPK.class)
public class CustomerDocument implements Serializable{

    private static final long serialVersionUID = 6373600479711119252L;

    @Id
    @Column(name="P_ID", nullable=false)
    private String pId;

    @Id
    @Column(name="P_NAME", nullable=false)
    private String pName;

    private     String  p_code;

    /* Getters and setters */

@Column(name="P_ID")