Hibernate使用查询(Hibernate working with queries)

 开始学习hibernate。 通过教程做所有事情，但当我尝试做简单的选择时，没有任何反应。 不明白问题是什么。 
 
 日志： 
 
мар 28, 2016 12:54:44 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.1.0.Final}
мар 28, 2016 12:54:44 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
мар 28, 2016 12:54:44 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
мар 28, 2016 12:54:45 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/taskboard]
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=root, password=****}
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 20 (min=1)
мар 28, 2016 12:54:45 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
мар 28, 2016 12:54:45 PM org.hibernate.validator.internal.util.Version <clinit>
INFO: HV000001: Hibernate Validator 5.2.4.Final
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl stop
INFO: HHH10001008: Cleaning up connection pool [jdbc:mysql://localhost:3306/taskboard]
 
 User.java 
 
@Entity
@Table(name="Users")
public class User {

@Id
@Column(name="id_user")
private Long id;

@Column(name="first_name")
private String firstName;

@Column(name="last_name")
private String lastName;

@Column(name="login")
private String login;

@Column(name="password")
private String password;
}//get&set
 
 Main.java 
 
SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
    Session session = sessionFactory.openSession();

    List<User> users = null;

    try {
    session.beginTransaction();

    Criteria criteria = session.createCriteria(User.class);
    users = criteria.list();

    session.getTransaction().commit();

    } catch (Exception e) {
        session.getTransaction().rollback();
        e.printStackTrace();
    } finally {
        session.close();
        sessionFactory.close();
    }

    for (User user: users) {
        System.out.println(user.toString());
    }
 
 的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="connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="connection.url">jdbc:mysql://localhost:3306/taskboard</property>
    <property name="connection.username">root</property>
    <property name="connection.password">1234</property>
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="show_sql">true</property>
    <property name="hbm2ddl.auto">update</property>

    <mapping class="User" />
</session-factory>
</hibernate-configuration>
 
 HibernateUtil.java 
 
public class HibernateUtil {
private static SessionFactory sessionFactory = null;

static {
    Configuration cfg = new Configuration().configure();
    StandardServiceRegistryBuilder builder =  new StandardServiceRegistryBuilder()
            .applySettings(cfg.getProperties());

    sessionFactory = cfg.buildSessionFactory(builder.build());
}

public static SessionFactory getSessionFactory(){
    return  sessionFactory;
   }
}

Started to learn hibernate. Doing everything by tutorial, but when I try to do simple select, nothing happens. Сan't understand what the problem is. 
 
Logs:
 
мар 28, 2016 12:54:44 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.1.0.Final}
мар 28, 2016 12:54:44 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
мар 28, 2016 12:54:44 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
мар 28, 2016 12:54:45 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/taskboard]
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=root, password=****}
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 20 (min=1)
мар 28, 2016 12:54:45 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
мар 28, 2016 12:54:45 PM org.hibernate.validator.internal.util.Version <clinit>
INFO: HV000001: Hibernate Validator 5.2.4.Final
мар 28, 2016 12:54:45 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl stop
INFO: HHH10001008: Cleaning up connection pool [jdbc:mysql://localhost:3306/taskboard]
 
User.java
 
@Entity
@Table(name="Users")
public class User {

@Id
@Column(name="id_user")
private Long id;

@Column(name="first_name")
private String firstName;

@Column(name="last_name")
private String lastName;

@Column(name="login")
private String login;

@Column(name="password")
private String password;
}//get&set
 
Main.java
 
SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
    Session session = sessionFactory.openSession();

    List<User> users = null;

    try {
    session.beginTransaction();

    Criteria criteria = session.createCriteria(User.class);
    users = criteria.list();

    session.getTransaction().commit();

    } catch (Exception e) {
        session.getTransaction().rollback();
        e.printStackTrace();
    } finally {
        session.close();
        sessionFactory.close();
    }

    for (User user: users) {
        System.out.println(user.toString());
    }
 
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="connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="connection.url">jdbc:mysql://localhost:3306/taskboard</property>
    <property name="connection.username">root</property>
    <property name="connection.password">1234</property>
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="show_sql">true</property>
    <property name="hbm2ddl.auto">update</property>

    <mapping class="User" />
</session-factory>
</hibernate-configuration>
 
HibernateUtil.java
 
public class HibernateUtil {
private static SessionFactory sessionFactory = null;

static {
    Configuration cfg = new Configuration().configure();
    StandardServiceRegistryBuilder builder =  new StandardServiceRegistryBuilder()
            .applySettings(cfg.getProperties());

    sessionFactory = cfg.buildSessionFactory(builder.build());
}

public static SessionFactory getSessionFactory(){
    return  sessionFactory;
   }
}

原文：https://stackoverflow.com/questions/36260161