Question

当我尝试在MySQL DB中插入1000000条记录时，我真的只有1000条。有什么问题？

这是我的hibernate.cfg.xml

com.mysql.jdbc.Driver JDBC：MySQL的：//本地主机：3307 / hibernatedb 根 bervol13

1

50

org.hibernate.dialect.MySQLDialect

螺纹

org.hibernate.cache.NoCacheProvider＆LT; /性＆gt; - ＆GT;

假
org.hibernate.cache.EhCacheProvider

真

更新

这是我的学生：

package ua.berchik.vovchuk.dto;

import java.io.Serializable;

import javax.persistence.Cacheable; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.Table;

import org.hibernate.annotations.Cache; import org.hibernate.annotations.CacheConcurrencyStrategy;

@Cacheable
@Cache（usage = CacheConcurrencyStrategy.READ_ONLY） @实体 @table（名称= “学生”） public class Student实现Serializable {

private static final long serialVersionUID = -6853928080190944025L;

@Id
@Column(name="ID")
@GeneratedValue(strategy=GenerationType.AUTO)
private int id;
@Column(name="STUDENT_NAME")
private String studName;
@Column(name="ROLE_NUMBER")
private int rollNumb;
@Column(name="COURSE")
private String course;

public Student(){}

public Student(String studName, int rollNumb, String course) {
    super();
    this.studName = studName;
    this.rollNumb = rollNumb;
    this.course = course;
}
public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}
public String getStudName() {
    return studName;
}
public void setStudName(String studName) {
    this.studName = studName;
}
public int getRollNumb() {
    return rollNumb;
}
public void setRollNumb(int rollNumb) {
    this.rollNumb = rollNumb;
}
public String getCourse() {
    return course;
}
public void setCourse(String course) {
    this.course = course;
}

public String toString()  
 {  
  return "Id: "+this.id+" ROLL Number: "+this.rollNumb+"| Name: "+this.studName+"| Course: "+this.course;  
 }

}

这是我的HibernateUtil：

package ua.berchik.vovchuk.hibernate.util;

import org.hibernate.SessionFactory; import org.hibernate.annotations.common.annotationfactory.AnnotationFactory; import org.hibernate.cfg.AnnotationConfiguration;

public class HibernateUtil {

private static final SessionFactory sessionFactory;

static{
    try{
        sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
    } catch(Throwable th){
        System.err.println("Initial SessionFactory creation failed"+th);
        throw new ExceptionInInitializerError(th);
    }
}

public static SessionFactory getSessionFactory(){
    return sessionFactory;
}

}

这是我的主要内容：

包ua.berchik.vovchuk.hibernate;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.xml.crypto.Data;

import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.criterion.Restrictions;

import ua.berchik.vovchuk.dto.FourWheeler;
import ua.berchik.vovchuk.dto.Student;
import ua.berchik.vovchuk.dto.TwoWheeler;
import ua.berchik.vovchuk.dto.User;
import ua.berchik.vovchuk.dto.UserDetails;
import ua.berchik.vovchuk.dto.Vehicle;
import ua.berchik.vovchuk.hibernate.util.HibernateUtil;

public class HiernateTest {

    public static void main(String[] args) {

        SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
        Session session = sessionFactory.openSession();
        session.beginTransaction();

        for ( int i=0; i<1000000; i++ )  
        {  
            Student student = new Student("Name "+i, i, "Course "+i);  
            session.save(student); 
            if(i%50 == 0){
                session.flush();
                session.clear();
            }
        }  

        session.getTransaction().commit();
        session.close();
    }

}

Hibernate Batch Processing插入1000000条记录

0 个答案: