休止状態を習得しました。チュートリアルですべてをやっていますが、単純な選択をしようとすると何も起こりません。問題の内容を理解できません。Hibernateはクエリを使って作業しています
ログ:
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の
<?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;
}
}
forループの前に、users.size()をSystem.out.println()に入れて何が得られるかを確認しますか? –
「何も起こらない」とは何を意味しているのか説明してください。 – Bikku
何も起こらないということは何を意味しますか? ログに選択クエリが表示されません。 –