Hibernate 修改数据库

最新推荐文章于 2025-04-02 11:54:09 发布

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本文档详细介绍了如何通过Hibernate框架进行数据库修改操作，包括配置hibernate.cfg.xml文件，创建学生类Student.java，以及编写测试类hiberTest.java进行数据库交互。通过对这些步骤的学习，读者将能够熟练掌握Hibernate对数据库的增删改查操作。

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hibernate.cfg.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

    <session-factory>
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="connection.url">jdbc:mysql://192.168.137.113:3306/stu</property>
        <property name="connection.username">root</property>
        <property name="connection.password">ROOT</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="myeclipse.connection.profile">firstTest</property>
    	<property name="show_sql">true</property>
    	<property name="format_sql">true</property>
    	<!-- <property name="hbm2ddl.auto">create</property> -->
    	
    	<mapping class="cn.com.edu.Student"/>
    </session-factory>

</hibernate-configuration>

Student.java 学生类

package cn.com.edu;


import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import org.hibernate.annotations.GenericGenerator;

@Entity
public class Student {
	@Id
	@GenericGenerator(name = "generator", strategy = "increment")
	@GeneratedValue(generator = "generator")
	private int id;
	
	private String name;
	private String sex;
	public Student() {
		super();
		// TODO Auto-generated constructor stub
	}
	public Student(int id, String name, String sex) {
		super();
		this.id = id;
		this.name = name;
		this.sex = sex;
	}
	public Student(String name, String sex) {
		super();
		this.name = name;
		this.sex = sex;
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	
}

hiberTest.java

package cn.com.edu;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;




public class hiberTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Configuration con=new Configuration().configure();//读取解析配置文件
		SessionFactory sf=con.buildSessionFactory(); //创建工厂，读取映射信息
		
		Session session=sf.openSession();//打开Session
		
		Student s = function1(session);//修改信息

		Transaction tr=session.beginTransaction(); //创建并开始一个事务
		session.save(s);
		tr.commit();
		session.close();
		sf.close();
	}

	public static Student function1(Session session){
		Student s1=(Student)session.get(Student.class, 2);
		s1.setName("laji");
		s1.setSex("人妖");
		return s1;
	}

}