hibernate简单注释（一.1）

Posted 2020-08-14

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package com.ij34.web;

import org.hibernate.*;
import org.hibernate.boot.registry.*;
import org.hibernate.cfg.*;
import org.hibernate.service.*;

import com.ij34.dao.New;

public class test01 {
public static void main(String[] args)throws Exception {
//实例化Configuration
Configuration conf=new Configuration()
.addAnnotatedClass(com.ij34.dao.New.class)
.setProperty("hibernate.connection.driver_class","com.mysql.jdbc.Driver") //一定要加hibernate
.setProperty("hibernate.connection.url","jdbc:mysql://localhost/hibernate") //一定要加hibernate
.setProperty("hibernate.connection.username","root") //一定要加hibernate
.setProperty("hibernate.connection.password","123456") //一定要加hibernate
.setProperty("hibernate.dialect","org.hibernate.dialect.MySQL5InnoDBDialect") //一定要加hibernate
.setProperty("show_mysql","true")
.setProperty("hibernate.hbm2ddl.auto", "create"); //一定要加hibernate
ServiceRegistry SR=new StandardServiceRegistryBuilder().applySettings(conf.getProperties()).build();
// 以Configuration实例创建SessionFactory实例
SessionFactory SF=conf.buildSessionFactory(SR);
//create session
Session session=SF.openSession();
//start 事务
Transaction tx=session.beginTransaction();
New n=new New();
n.setTitle("hello");
n.setContent("2016 hello world 123456789");
session.save(n);
tx.commit();
session.close();
SF.close();
}
}

 

 

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package com.ij34.dao;
import javax.persistence.*;
@Entity
@Table(name="test01")
public class New {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
private String title;
private String content;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}

}