hibernate入门案例
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创建数据库表(数据库表自己准备)
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创建项目导入hibernate和数据库驱动jar包
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本例使用的maven项目,数据库是8.0及以上(数据库驱动包根据版本调整)
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.4.21.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.11</version>
</dependency>
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2、创建与数据库表对应的实体类
package com.yl.bean;
import java.io.Serializable;
import java.sql.Date;
/**
* 用户实体类
*/
public class User implements Serializable {
private Integer id;//id
private String username;//用户名
private Date birthday;//生日
private String sex;//性别
private String address;//地址
public User() {
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
3、创建hibernate全局配置文件(hibernate.cfg.xml)
4、创建实体类映射配置文件(类名.hbm.xml)
5、测试
public static void main(String[] args) {
//加载配置文件
Configuration cig = new Configuration().configure();
//创建工厂
SessionFactory sessionFactory = cig.buildSessionFactory();
//创建Session对象
Session session = sessionFactory.openSession();
//开启事务
Transaction t = session.beginTransaction();
User user=new User();
user.setAddress("广州");
user.setUsername("yl001");
Date date=new Date(System.currentTimeMillis());
user.setBirthday(date);
user.setSex("男");
//添加用户
session.save(user);
//提交事务
t.commit();
//关闭资源
session.close();
sessionFactory.close();
}
记得快乐