Приложение не заканчивается после вставки данных с использованием JPA

Question

У меня есть требование, когда мне нужно создать таблицу и вставить данные в mysql, используя Hibernate.

Я могу создать данные и вставить в таблицу, но моя проблема заключается в том, что основной метод не заканчивается после выполнения. Метод службы продолжается после печати «======== DONE ===== ==»

Пожалуйста, дайте мне знать, как я могу решить эту проблему

MySql Версия Hibernate Версия Настойчивость XML

<?xml version="1.0" encoding="UTF-8"?> 
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence"> 
<persistence-unit name="MyPU" transaction-type="RESOURCE_LOCAL"> 
<provider>org.hibernate.ejb.HibernatePersistence</provider> 
<class>com.inc.Greeting</class> 
<properties> 
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/maersk"/> 
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/> 
<property name="hibernate.connection.password" value="root"/> 
<property name="hibernate.connection.username" value="root"/> 
<property name="hibernate.hbm2ddl.auto" value="update"/> 
</properties> 
</persistence-unit> 
</persistence> 

Сервис CLAS ы

public class Test { 
    EntityManager em = null; 
    void initEntityManager() { 
     EntityManagerFactory emf = Persistence.createEntityManagerFactory("MyPU"); 
     em = emf.createEntityManager(); 
    } 
    void create() { 
     em.getTransaction().begin(); 
     Greeting g_en = new Greeting("hel", "en"); 
     Greeting[] greetings = new Greeting[]{g_en}; 
     for(Greeting g : greetings) { 
      em.persist(g); 
     } 
     em.getTransaction().commit(); 
     System.out.println(); 
    } 

    public static void main(String[] args) { 
     Test test = new Test(); 
     test.initEntityManager(); 
     test.create(); 
     System.out.println("================== DONE ==================="); 

    } 
} 

Entity Класс

@Entity 
public class Greeting implements Serializable { 
    @Id 
    @GeneratedValue 
    private int id; 
    @Column(name="message",length=10) 
    private String message; 
    @Basic 
    private String language; 

    public Greeting() { 
    } 

    public Greeting(String message, String language) { 
     this.message = message; 
     this.language = language; 
    } 
} 

Журналы в консоли

Jan 29, 2015 3:33:46 PM org.hibernate.ejb.HibernatePersistence logDeprecation 
WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead. 
Jan 29, 2015 3:33:46 PM org.hibernate.ejb.HibernatePersistence logDeprecation 
WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead. 
Jan 29, 2015 3:33:46 PM org.hibernate.ejb.HibernatePersistence logDeprecation 
WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead. 
Jan 29, 2015 3:33:46 PM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation 
INFO: HHH000204: Processing PersistenceUnitInfo [ 
    name: MyPU 
    ...] 
Jan 29, 2015 3:33:46 PM org.hibernate.Version logVersion 
INFO: HHH000412: Hibernate Core {4.3.5.Final} 
Jan 29, 2015 3:33:46 PM org.hibernate.cfg.Environment <clinit> 
INFO: HHH000206: hibernate.properties not found 
Jan 29, 2015 3:33:46 PM org.hibernate.cfg.Environment buildBytecodeProvider 
INFO: HHH000021: Bytecode provider name : javassist 
Jan 29, 2015 3:33:46 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit> 
INFO: HCANN000001: Hibernate Commons Annotations {4.0.4.Final} 
Jan 29, 2015 3:33:46 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure 
WARN: HHH000402: Using Hibernate built-in connection pool (not for production use!) 
Jan 29, 2015 3:33:46 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator 
INFO: HHH000401: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/maersk] 
Jan 29, 2015 3:33:46 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator 
INFO: HHH000046: Connection properties: {user=root, password=****} 
Jan 29, 2015 3:33:46 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator 
INFO: HHH000006: Autocommit mode: false 
Jan 29, 2015 3:33:46 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure 
INFO: HHH000115: Hibernate connection pool size: 20 (min=1) 
Jan 29, 2015 3:33:47 PM org.hibernate.dialect.Dialect <init> 
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect 
Jan 29, 2015 3:33:47 PM org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init> 
INFO: HHH000397: Using ASTQueryTranslatorFactory 
Jan 29, 2015 3:33:48 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute 
INFO: HHH000228: Running hbm2ddl schema update 
Jan 29, 2015 3:33:48 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute 
INFO: HHH000102: Fetching database metadata 
Jan 29, 2015 3:33:48 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute 
INFO: HHH000396: Updating schema 
Jan 29, 2015 3:33:48 PM org.hibernate.tool.hbm2ddl.TableMetadata <init> 
INFO: HHH000261: Table found: maersk.greeting 
Jan 29, 2015 3:33:48 PM org.hibernate.tool.hbm2ddl.TableMetadata <init> 
INFO: HHH000037: Columns: [message, id, language] 
Jan 29, 2015 3:33:48 PM org.hibernate.tool.hbm2ddl.TableMetadata <init> 
INFO: HHH000108: Foreign keys: [] 
Jan 29, 2015 3:33:48 PM org.hibernate.tool.hbm2ddl.TableMetadata <init> 
INFO: HHH000126: Indexes: [primary] 
Jan 29, 2015 3:33:48 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute 
INFO: HHH000232: Schema update complete 

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Answer 1

Попробуйте closingEntityManagerFactory экземпляр.