Hibernate初体验一

嘿嘿，生活就是这样，你多么的努力，没人看到，但如果你不努力，那么你就更没人看到了

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哈哈，说了些不必要的。在这里我把Hibernate 3.0 做个小小的例子

lib：

antlr-2.7.6.jar

commons-collections-3.1.jar

commons-logging-1.1.1.jar

dom4j-1.6.1.jar

hibernate-jpa-2.0-api-1.0.1.Final.jar

javassist-3.12.0.GA.jar

hibernate3.jar

javassist-3.12.0.GA.jar

jta-1.1.jar

mysql-connector-java-5.0.6-bin.jar

slf4j-api-1.6.1.jar

slf4j-api-1.6.2.jar

slf4j-ext-1.6.2.jar

slf4j-jcl-1.6.2.jar

slf4j-jdk14-1.6.2.jar

slf4j-log4j12-1.6.2.jar

slf4j-nop-1.6.2.jar

slf4j-simple-1.6.2.jar

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package com.chenhailong;import java.io.Serializable;public class TUser implements Serializable {    /**     *      */    private static final long serialVersionUID = -1886893835045076202L;    private Integer id;    private String name;    public TUser() {    }    /**     * @return the id     */    public Integer getId() {        return id;    }    /**     * @param id     *            the id to set     */    public void setId(Integer id) {        this.id = id;    }    /**     * @return the name     */    public String getName() {        return name;    }    /**     * @param name     *            the name to set     */    public void setName(String name) {        this.name = name;    }}

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<?xml version="1.0" encoding="utf-8"?><!DOCTYPE hibernate-mapping     PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"     "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping package="com.chenhailong"><class name="com.chenhailong.TUser" table="TUser"><id name="id" column="id" type="java.lang.Integer"><generator /></id><property name="name" column="name" type="java.lang.String"not-null="true" /></class></hibernate-mapping>

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<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE hibernate-configuration PUBLIC"-//Hibernate/Hibernate Configuration DTD 2.0//EN""http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd"><hibernate-configuration><session-factory><!-- properties --><property name="connection.username">root</property><property name="connection.url">JDBC:MySQL://localhost:3306/test</property><property name="dialect">org.hibernate.dialect.MySQLDialect</property><property name="connection.password">chenhailong</property><property name="connection.driver_class">org.gjt.mm.mysql.Driver</property><!-- mapping files --><mapping resource="com/chenhailong/TUser.hbm.xml" /></session-factory></hibernate-configuration>

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/** *  */package com.chenhailong.main;import java.io.File;import java.util.List;import org.hibernate.Query;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;import com.chenhailong.TUser;/** * @author chenhailong *上午10:09:22 *com.chenhailong.main */public class Main {    /**     * Hibernate 3 dialect modify net.sf.hibernate -> org.hibernate      */    public static void main(String[] args) {        Session session = getSession();        //insertTUser(session);        //selectTUser(session);        deleteTUser(session);        session.close();    }    public static Session getSession() {        Configuration cfg = new Configuration().configure();        SessionFactory sessionFactory = cfg.buildSessionFactory();        Session session = sessionFactory.openSession();        return session;    }    public static Session getSession(String fileName) {        File file = new File(fileName);        Configuration cfg = new Configuration().configure(file);        SessionFactory sessionFactory = cfg.buildSessionFactory();        Session session = sessionFactory.openSession();        return session;    }    public static void insertTUser(Session session) {        Transaction tx = session.beginTransaction();        TUser t_user = new TUser();        t_user.setName("chenhailong");        session.save(t_user);        session.flush();        tx.commit();    }    @SuppressWarnings("unchecked")    public static void selectTUser(Session session) {        String hql = " from TUser where name='chenhailong'";        try {            List<TUser> userList = session.createQuery(hql).list();            for (TUser user : userList) {                int id = user.getId();                String name = user.getName();                System.out.println(id + "\t" + name);            }        } catch (Exception e) {            e.printStackTrace();        }    }    public static void deleteTUser(Session session) {        Transaction tx = session.beginTransaction();        TUser user = (TUser) session.get(TUser.class, new Integer(1));        session.delete(user);        tx.commit();    }    public static void deleteTUserUseHQL(Session session) {        Transaction tx = session.beginTransaction();        session.delete("from TUser where id = 1");        tx.commit();    }    public static void deleteTUseHQLByQuery(Session session) {        String hql = "delete TUser where id = 1";        Query query = session.createQuery(hql);        query.executeUpdate();    }}

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