hibernate之实体类型到映射文件

1.通过写hibernate的映射文件，将实体类型转换成数据库中的表

其中那个映射文件是根据实体类型而写的。

实体类型User.java

package cn.wwh.www.hibernate.dd.property;

import java.util.Arrays;
import java.util.Date;

/**
 *类的作用：
 *
 *
 *@author 一叶扁舟
 *@version 1.0
 *@创建时间： 2014-8-17   下午08:05:30
 */
public class User {
	private Integer id;
	private String name; // 姓名
	private boolean gender; // true表示男，false表示女
	private Date birthday; // 生日
	private String desc; // 一大段说明，最多为5000字
	private byte[] photo; // 照片
	/**
	 * @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;
	}
	/**
	 * @return the gender
	 */
	public boolean isGender() {
		return gender;
	}
	/**
	 * @param gender the gender to set
	 */
	public void setGender(boolean gender) {
		this.gender = gender;
	}
	/**
	 * @return the birthday
	 */
	public Date getBirthday() {
		return birthday;
	}
	/**
	 * @param birthday the birthday to set
	 */
	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}
	/**
	 * @return the desc
	 */
	public String getDesc() {
		return desc;
	}
	/**
	 * @param desc the desc to set
	 */
	public void setDesc(String desc) {
		this.desc = desc;
	}
	/**
	 * @return the photo
	 */
	public byte[] getPhoto() {
		return photo;
	}
	/**
	 * @param photo the photo to set
	 */
	public void setPhoto(byte[] photo) {
		this.photo = photo;
	}
	@Override
	public String toString() {
		return "User [birthday=" + birthday + "\n desc=" + desc + "\n gender="
				+ gender + "\n id=" + id + "\n name=" + name + "\n photo="
				+ Arrays.toString(photo) + "]";
	}
	
	

	

}

	

		
		
		com.mysql.jdbc.Driver
		
		jdbc:mysql://localhost:3306/hibernate
		
		root
		
		wwh
		
		org.hibernate.dialect.MySQL5Dialect
		
		
		
		update
		
		true
		
		true
		
	

	

package cn.wwh.www.hibernate.dd.property;

import java.io.FileInputStream;
import java.util.Date;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.junit.Test;

/**
 *类的作用：
 *
 *
 *@author 一叶扁舟
 *@version 1.0
 *@创建时间： 2014-8-17   下午08:10:38
 */
public class TestSqlByXml {

	private static SessionFactory sessiOnFactory= new Configuration()
			.configure()
			.buildSessionFactory();

	// 保存
	@Test
	public void testSave() throws Exception {
		Session session = sessionFactory.openSession();
		session.beginTransaction();
		// ---------------------------------------

		// 从硬盘中读取图片，然后存储数据库中
		FileInputStream in = new FileInputStream("F:/psb.jpg");
		byte[] photo = new byte[in.available()];
		in.read(photo);
		in.close();

		// 准备对象
		User user = new User();
		user.setName("一叶扁舟");
		user.setGender(true);
		user.setBirthday(new Date());
		user.setDesc("一叶扁舟是一个积极向上的孩子，为梦想而努力奋斗着…………");
		user.setPhoto(photo);

		// 保存
		session.save(user);

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

	// 获取
	@Test
	public void testGet() throws Exception {
		Session session = sessionFactory.openSession();
		session.beginTransaction();
		// ---------------------------------------

		User user = (User) session.get(User.class, 1);
		System.out.println(user.getName());
		System.out.println(user.isGender());
		System.out.println(user.getBirthday());
		System.out.println(user.getDesc());
		System.out.println(user.getPhoto());
//		System.out.println(user);

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

	
	

}