Wu Yuxiong - natural born flyweight JAVA EE enterprise application development Struts2Sping4Hibernate Integrated Development Study Notes: Hibernate_batchInsert

<?xml version="1.0" encoding="GBK"?>
<project name="hibernate" basedir="." default="">
    <property name="src" value="src"/>
    <property name="dest" value="classes"/>

    <path id="classpath">
        <fileset dir="../../lib">
            <include name="**/*.jar"/>
        </fileset>
        <pathelement path="${dest}"/>
    </path>

    <target name="compile" description="Compile all source code">
        <delete dir="${dest}"/>
        <mkdir dir="${dest}"/>
        <copy todir="${dest}">
            <fileset dir="${src}">
                <exclude name="**/*.java"/>
            </fileset>        
        </copy>
        <javac destdir="${dest}" debug="true" includeantruntime="yes"
            deprecation="false" optimize="false" failonerror="true">
            <src path="${src}"/>
            <classpath refid="classpath"/>
            <compilerarg value="-Xlint:deprecation"/>
        </javac>
    </target>

    <target name="run" description="Run the main class" depends="compile">
        <java classname="lee.UserManager" fork="yes" failonerror="true">
            <classpath refid="classpath"/>
        </java>
    </target>

</project>

<? xml Version = "1.0" encoding = "GBK"?> 
<-! DTD specifies the information Hibernate configuration file -> 
! <DOCTYPE hibernate- the Configuration the PUBLIC
     "- // Hibernate / Hibernate the Configuration DTD 3.0 // EN" 
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> 
<-! is the root element of the configuration Hibernate-configuration file -> 
<Hibernate-the configuration> 
    <the session-Factory's> 
        <! - Specifies the database connection for driving -> 
        <Property name = "connection.driver_class"> com.mysql.jdbc.Driver </ Property> 
        <-! URL specified database connection, wherein hibernate is connected to the application database name -> 
        <Property name = "connection.url"> jdbc: MySQL: // localhost / Hibernate </ Property> 
        <-! Specifies the user name connecting to the database ->/property>
        <property name="connection.username">root</property>
        <! - Specifies the password for connecting to the database -> 
        <Property name = "connection.password"> 32147 </ Property> 
        <! - Specifies the maximum number of connections the connection pool -> 
        <Property name = "hibernate.c3p0. MAX_SIZE "> 20 is </ Property> 
        <-! connection pool specified minimum number of connections -> 
        <Property name =" hibernate.c3p0.min_size ">. 1 </ Property> 
        <-! connection timeout specified connection pool duration -> 
        <Property name = "hibernate.c3p0.timeout"> 5000 </ Property> 
        <-! specify the connection pool maximum number of cache Statement object -> 
        <Property name = "hibernate.c3p0.max_statements"> 100 </ Property> 
        <Property name = "hibernate.c3p0.idle_test_period"> 3000 </ Property> </ Property> 
        <-! dialect specified database ->property name="hibernate.c3p0.idle_test_period">3000</property>
        <property name="hibernate.c3p0.acquire_increment">2</property>
        <Property name = "hibernate.c3p0.validate"> to true 
        <Property name = "dialect"> org.hibernate.dialect.MySQL5InnoDBDialect </ Property> 
        <-! automatically create the database as needed -> 
        <Property name = "hbm2ddl .auto "> Update </ Property> 
        <-! display Hibernate persistence operations generated SQL -> 
        <Property name =" show_sql "> to true </ Property> 
        <-! SQL script will then be formatted output -> 
        <Property name = "hibernate.format_sql"> to true </ Property> 
        <-! list all persistent class class name -> 
        <Mapping class = "org.crazyit.app.domain.User" / > 
    </session-factory>
</hibernate-configuration>

package org.crazyit.app.domain;

import javax.persistence.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [email protected]
 * @version  1.0
 */
@Entity
@Table(name="user_inf")
public class User
{
    // 定义标识属性
    @Id @Column(name="user_id")
    @GeneratedValue (Strategy = GenerationType.IDENTITY)
     Private Integer ID;
     Private String name;
     Private  int Age;
     Private String nationality; 

    // no argument constructor 
    public the User () 
    { 
    } 
    // constructor initializes all member variables 
    public the User ( name String, int Age, nationality String) 
    { 
        the this .name = name;
         the this .age = Age;
         the this .nationality = nationality; 
    } 

    // ID of the setter and getter methods
    public void setId(Integer id)
    {
        this.id = id;
    }
    public Integer getId()
    {
        return this.id;
    }

    // name的setter和getter方法
    public void setName(String name)
    {
        this.name = name;
    }
    public String getName()
    {
        return this.name;
    }

    // age的setter和getter方法
    public void setAge(int age)
    {
        this.age = age;
    }
    public int getAge()
    {
        return this.age;
    }

    // nationality的setter和getter方法
    public void setNationality(String nationality)
    {
        this.nationality = nationality;
    }
    public String getNationality()
    {
        return this.nationality;
    }
}

package lee;

import org.hibernate.*;
import org.hibernate.cfg.*;
import org.hibernate.service.*;
import org.hibernate.boot.registry.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [email protected]
 * @version  1.0
 */
public classThe HibernateUtil 
{ 
    public  static  Final SessionFactory the sessionFactory; 

    static 
    { 
        the try 
        { 
            // the default configuration file created hibernate.cfg.xml Configuration Example 
            Configuration CFG = new new Configuration () 
                .configure (); 
            // to Configuration instance to create SessionFactory instances 
            ServiceRegistry serviceRegistry = new new StandardServiceRegistryBuilder () 
                . .applySettings (cfg.getProperties ()) Build (); 
            the sessionFactory = cfg.buildSessionFactory (ServiceRegistry); 
        } 
        the catch(The Throwable EX) 
        { 
            System.err.println ( + "the SessionFactory the Initial Creation failed." EX);
             the throw  new new ExceptionInInitializerError (EX); 
        } 
    } 

    // the ThreadLocal can isolate a plurality of threads to share data, eliminating the need to thread synchronization 
    public  static  Final the ThreadLocal <the Session> the session
         = new new the ThreadLocal <the Session> (); 

    public  static the Session currentSession ()
         throws plain HibernateException 
    { 
        the Session S = Session.get ();
         //If the thread has not Session, a new one is created the Session 
        IF (S == null ) 
        { 
            S = sessionFactory.openSession ();
             // the Session variable storage ThreadLocal variable obtained in the session in 
            session.set (S); 
        } 
        return S; 
    } 

    public  static  void closeSession ()
         throws plain HibernateException 
    { 
        the Session S = Session.get ();
         IF (S =! null ) 
            S.CLOSE (); 
        session.set ( null );  
    }
}

package lee;

import org.hibernate.Transaction;
import org.hibernate.Session;

import org.crazyit.app.domain.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [email protected]
 * @version  1.0
 */
public class UserManager
{
    public static voidmain (String [] args) throws Exception 
    { 
        the UserManager MGR = new new the UserManager (); 
        mgr.addUsers (); 
        HibernateUtil.sessionFactory.close (); 
    } 
    Private  void ADDUSERS () throws Exception 
    { 
        // Open the Session 
        the Session = the session the HibernateUtil. currentSession ();
         // start transaction 
        the transaction TX = session.beginTransaction ();
         // loop 100,000, 100,000 records inserted 
        for ( int I = 0; I <100 000; I ++ ) 
        {
            // Create instance of User 
            User U1 = new new User (); 
            u1.setName ( "XXXXX" + I); 
            u1.setAge (I); 
            u1.setNationality ( "China" );
             // User Session instance level cache 
            session. Save (U1);
             // every time when the accumulator 20 is a multiple of the brush into the Session database data,
             // and empty Session cache. 
            IF (% I 20 is == 0 ) 
            { 
                Session.flush (); 
                Session.clear (); 
            } 
        } 
        // commit the transaction 
        tx.commit ();
         //Close transaction 
        HibernateUtil.closeSession (); 
    } 
}