JPA - 多對一關係不起作用

我與JPA ManyToOne關係有問題。我有兩個實體（HikeList，用戶）：JPA - 多對一關係不起作用

@Entity 
@Table(name = "T_HIKELIST") 
public class Hikelist implements Serializable { 

    @Id 
    @GeneratedValue(strategy = GenerationType.TABLE) 
    private long id; 

    @Size(min = 1, max = 50) 
    @ManyToOne(optional = false) 
    @JoinColumn(name = "login", referencedColumnName = "login") 
    private User user; 
... 
}

而且

@Entity 
@Table(name = "T_USER") 
public class User implements Serializable { 

    @NotNull 
    @Size(min = 0, max = 50) 
    @Id 
    private String login; 

    @OneToMany(cascade = CascadeType.ALL, mappedBy = "user") 
    private Collection<Hikelist> hikeListCollection; 
... 
}

我的測試類：

... 
    @Test 
    public void testCreateUser() { 
     User user = new User(); 
     user.setLogin("thomaslogin"); 
     user.setEmail("[email protected]"); 
     user.setPassword("thomas"); 
     user.setFirstName("thomas"); 
     user.setLastName("thomas"); 
     userService.createUser(user); 

     Hikelist hike = new Hikelist(); 
     hike.setId(new Long(1L)); 
     hike.setLabel("GR20"); 
     hike.setUser(user); 
     hikeService.createHikeList(hike); 

     Hikelist hike1 = hikeRepository.findOne(new Long(1L)); 
     assertNotNull(hike1); 
    }

我m到處當我打電話是以下錯誤：hikeService.createHikeList （遠足）;

有人知道我錯了嗎？預先感謝您。

org.springframework.transaction.TransactionSystemException：不能提交JPA事務;嵌套的異常是 javax.persistence.RollbackException：錯誤而在 org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit犯在 org.springframework.orm.jpa.JpaTransactionManager.doCommit（JpaTransactionManager.java:524）的交易（AbstractPlatformTransactionManager.java:757）在 org.springframework.transaction.support.AbstractPlatformTransactionManager.commit（AbstractPlatformTransactionManager.java:726）在 org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning（TransactionAspectSupport.java:478）在 org.springframework.transaction.interceptor.T ransactionAspectSupport.invokeWithinTransaction（TransactionAspectSupport.java:272）在 org.springframework.transaction.interceptor.TransactionInterceptor.invoke（TransactionInterceptor.java:95）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java： 179）在 org.springframework.aop.framework.CglibAopProxy $ DynamicAdvisedInterceptor.intercept（CglibAopProxy.java:644）在 com.breizh.packlight.service.HikelistService $$ EnhancerBySpringCGLIB $$ 38379214.createHikeList（）在 COM .breizh.packlight.service.HikelistServiceTest.testCreateUser（HikelistServiceTest.java:60） at sun.reflect.NativeMethodAccessorI mpl.invoke0（本機方法）在 sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57）在 sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method中。 invoke（Method.java:606）at org.junit.runners.model.FrameworkMethod $ 1.runReflectiveCall（FrameworkMethod.java:47） at org.junit.internal.runners.model.ReflectiveCallable.run（ReflectiveCallable.java： 12）在 org.junit.runners.model.FrameworkMethod.invokeExplosively（FrameworkMethod.java:44）在 org.junit.internal.runners.statements.InvokeMethod.evaluate（InvokeMethod.java:17）在 org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate（RunBeforeTestMethodCallbacks.java:74）在 org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate（RunAfterTestMethodCallbacks.java:83）在 org.springframework.test.context.junit4.statements.SpringRepeat.evaluate（SpringRepeat。的java：72）在 org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild（SpringJUnit4ClassRunner.java:232）在 org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild（SpringJUnit4ClassRunner.java:89） at org.junit.runners.ParentRunner $ 3.run（ParentRunner.java:238）at org.junit.runners.ParentRunner $ 1.schedule（ParentRunner.java:63）at org.junit.runners.ParentRunner.runChildren（ org.junit.runners.ParentRunner.access $ 000（ParentRunner.java:53）at org.junit.runners.ParentRunner $ 2.evaluate（ParentRunner.java:229）at org.springframework。 test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate（RunBeforeTestClassCallb ack.java:61） at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate（RunAfterTestClassCallbacks.java:71） at org.junit.runners.ParentRunner.run（ParentRunner.java:309）at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run（SpringJUnit4ClassRunner.java:175）在 org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run（JUnit4TestReference.java:50）在有機.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:467）在有機.eclipse.jdt.internal.junit .runner.RemoteTestRunner.runTests（RemoteTestRunner.java:683）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:390）在 org.eclipse.jdt.internal.junit .runner.RemoteTestRunner.main（RemoteTestRunner.java:197）引起：javax.persistence.RollbackException：錯誤而提交在 org.hibernate.jpa.internal.TransactionImpl.commit（TransactionImpl.java:94）交易在 org.springframework.orm.jpa.JpaTransactionManager.doCommit（JpaTransactionManager.java:515） ... 37更多原因：javax.validation.UnexpectedTypeException： HV000030：找不到類型驗證程序： com.breizh.packlight.domain.User。在 org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.verifyResolveWasUnique（ConstraintValidatorManager.java:218）在 org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.findMatchingValidatorClass（ConstraintValidatorManager.java:193）在 org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.getInitializedValidator（ConstraintValidatorManager.java:97）在 org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints（ConstraintTree.java:125）在 org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints（ConstraintTree.java:91）在 org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint（MetaConstraint.java:85）在 org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint（ValidatorImpl.java:478）在 org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup（ValidatorImpl.java:424）在 org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup（ValidatorImpl.java:388）在 org.hibernate作爲.validator.internal.engine.ValidatorImpl.validateInContext（ValidatorImpl.java:340） at org.hibernate.validator.internal。engine.ValidatorImpl.validate（ValidatorImpl.java:158）在 org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate（BeanValidationEventListener.java:137）在 org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert（BeanValidationEventListener。的java：95）在 org.hibernate.action.internal.EntityInsertAction.preInsert（EntityInsertAction.java:206）在 org.hibernate.action.internal.EntityInsertAction.execute（EntityInsertAction.java:96）在有機.hibernate.engine.spi.ActionQueue.executeActions（ActionQueue.java:453）在 org.hibernate.engine.spi.ActionQueue.executeActions（ActionQueue.java:345）在 org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions（AbstractFlushingEventListener.java:350）在 org.hibernate.event.internal.DefaultFlushEventListener.onFlush（DefaultFlushEventListener.java:56）在org.hibernate.internal。 SessionImpl.flush（SessionImpl.java:1218）在 org.hibernate.internal.SessionImpl.managedFlush（SessionImpl.java:421）在 org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit（JdbcTransaction。的java：101）在 org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit（AbstractTransactionImpl.java:177）在 org.hibernate.jpa.internal.TransactionImpl.commit（TransactionImpl.java:77） ...... 38多個

來源

2014-03-31 user1260928

的錯誤是：

javax.validation.UnexpectedTypeException: HV000030: No validator could be found for type: com.breizh.packlight.domain.User

而且它是由

@Size(min = 1, max = 50) 
private User user;

引起

用戶如何可以有1到50之間的大小？

驗證約束應用的Java對象。不是數據庫中的列。您已確保登錄的大小合適，並且用戶字段映射到具有外鍵約束的列，因此@Size註釋不僅不起作用，而且不必要。

來源

2014-03-31 16:37:15

我不停地一遍又一遍讀我的代碼找到一個空的錯誤，但沒有找到it.Thanks很多關於打開我的眼睛... – user1260928

JPA - 多對一關係不起作用

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