Question

这是我第一次尝试以XML方式使用Hibernate Framework，并且由于没有明显的原因而遇到以下异常。

java.lang.NoClassDefFoundError：javax / xml / bind / JAXBException

这是一个Maven项目，我已将所有xml文件放置在资源目录中。我的配置文件有问题吗？

hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>

<session-factory>

    <property name="hbm2ddl.auto">update</property>
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="connection.url">jdbc:mysql://localhost:3306/mydb</property>
    <property name="connection.username">me</property>
    <property name="connection.password"></property>
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property>

    <mapping resource="order.hbm.xml"/>
</session-factory>

</hibernate-configuration>

order.hbm.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="com.company.Entities.Order" table="order">
    <id name="id" type = "int" column = "oid">
        <generator class="native"/>
    </id>
    <property name="name" column="name" type="string" />

</class>

</hibernate-mapping>

主要

public class MainApplication
{
static Session sessionObj;
static SessionFactory sessionFactoryObj;

private static SessionFactory buildSessionFactory()
{
    Configuration configObj = new Configuration();
    configObj.configure("hibernate.cfg.xml");

    ServiceRegistry serviceRegistryObj = new StandardServiceRegistryBuilder().applySettings(configObj.getProperties()).build();

    sessionFactoryObj = configObj.buildSessionFactory(serviceRegistryObj);
    return sessionFactoryObj;
}

public static void main(String[] args)
{
    Order o = new Order();
    //o.setId(1);
    o.setName("first order name");

    sessionObj = buildSessionFactory().openSession();
    sessionObj.beginTransaction();

    sessionObj.save(o);
    sessionObj.getTransaction().commit();

    if(sessionObj != null)
    {
        sessionObj.close();
    }

}
}

Answer 1

您说您使用JDK9。从版本9开始，jaxb就不再在此JDK中。您必须在依赖项上对其进行设置，例如：

          <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.3.0</version>
          </dependency>
          <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-core</artifactId>
            <version>2.3.0</version>
          </dependency>
          <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-impl</artifactId>
            <version>2.3.0</version>
          </dependency>

使用Hibernate找不到类定义错误

1 个答案: