JPA 2.0：在JPA 2.0中使用javax.validation。*包的例外

Question

当我尝试使用JPA使用hibernate进行bean验证时，会发生以下异常：

Exception in thread "main" javax.persistence.PersistenceException: [PersistenceUnit: Chapter11] Unable to build EntityManagerFactory
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:915)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:890)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:57)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47)
at example.test.Test.main(Test.java:18)

Caused by: org.hibernate.HibernateException: Error applying BeanValidation relational constraints
at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.applyRelationalConstraints(BeanValidationIntegrator.java:219)
at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.integrate(BeanValidationIntegrator.java:126)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:306)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1744)
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:94)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:905)
... 5 more

Caused by: java.lang.reflect.InvocationTargetException
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.hibernate.cfg.beanvalidation.BeanValidationIntegrator.applyRelationalConstraints(BeanValidationIntegrator.java:208)
... 10 more
Caused by: java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider
at org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:41)
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:269)
at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:111)
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:521)
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.applyDDL(TypeSafeActivator.java:119)
... 15 more

Caused by: java.lang.ClassNotFoundException: javax.validation.ParameterNameProvider
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 20 more

我是新手使用验证包，我不了解JAVA EE bean。如何使用此验证包与jpa实体以下是我的代码：

 public class Employee implements Serializable , EmployeeDetail{


private static final long serialVersionUID = 1L;
@Id
@GeneratedValue
private int id;
@NotNull
private String name;
    ____________________

public class Test {
public static void main(String[] args) {
    EntityManagerFactory emf = Persistence.createEntityManagerFactory("Chapter11");
    EntityManager em = emf.createEntityManager();
    EntityTransaction etr = em.getTransaction();

    etr.begin();
            ------------------

        FullTimeEmployee flEmp = new FullTimeEmployee();
        flEmp.setName("Harmeet Singh");
        flEmp.setPension(56000);
        flEmp.setSalary(100000);

        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
        Validator validator = factory.getValidator();
        validator.validate(flEmp, Employee.class);

        em.persist(flEmp);
    etr.commit();

Answer 1

正如@Korgen在评论中提到的，hibernate-validator-5.x.x与validation-api-1.0.x不兼容。这是因为转向新规范JSR-303 - > JSR-349。

有两种方法可以解决此问题：

1.降级hibernate验证器版本（实现JSR-303）：

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>4.3.1.Final</version>
</dependency> 

2.如果你不想从hibernate验证器5转回到hibernate验证器4，另一个解决方案是将javax.validation升级到更高版本（这是描述JSR-349）：

<dependency>
    <groupId>javax.validation</groupId>
    <artifactId>validation-api</artifactId>
    <version>1.1.0.Final</version>
</dependency>

Answer 2

对于那些有错误的人NoClassDefFoundError: javax/validation/valueextraction/ValueExtractorDeclarationException和他们的验证-api已经是javax.validation:validation-api:1.1.0.Final

修复是从javax.validation:validation-api:1.1.0.Final升级到javax.validation:validation-api:2.0.1.Final。