package?junit;
import?java.sql.Connection;
import?java.sql.SQLException;
import?java.util.Date;
import?org.hibernate.Session;
import?org.hibernate.SessionFactory;
import?org.hibernate.Transaction;
import?org.hibernate.cfg.Configuration;
import?org.hibernate.jdbc.Work;
import?org.junit.Test;
import?com.model.Student;
public?class?SessionTest?{
@Test
public?void?test1(){
Configuration?configure?=?new?Configuration().configure();
SessionFactory?sessionFactory?=configure.buildSessionFactory();
Session?session?=?sessionFactory.openSession();
//System.out.println(session==session2);
Transaction?trans=session.beginTransaction();
session.doWork(new?Work()?{
@Override
public?void?execute(Connection?arg0)?throws?SQLException?{
//?TODO?Auto-generated?method?stub
System.out.println(arg0.hashCode());
}
});
Student?s?=?new?Student(7,?"kkk",?new?Date(),?"上海");
session.save(s);
trans.commit();
Session?session2?=?sessionFactory.openSession();
trans=session2.beginTransaction();
session2.doWork(new?Work()?{
@Override
public?void?execute(Connection?arg0)?throws?SQLException?{
//?TODO?Auto-generated?method?stub
System.out.println(arg0.hashCode());
}
});
s?=?new?Student(6,?"111",?new?Date(),?"上海");
session2.save(s);
trans.commit();
session.close();
session2.close();
}
}
2022-03-29
你看看判斷狀態(tài)，改變狀態(tài)的地方是不是有什么問(wèn)題嘞。
vvqigfidkgsjkhugwbbdxbidzphyjrrzrcmrtguhoevcd
2016-11-30
理解是兩個(gè)不同對(duì)象就好，估計(jì)你也使用的Java 8
2016-11-30
hashCode方法是Object的方法 ?你是可以在任何子類(lèi)里面復(fù)寫(xiě)的（java所有類(lèi)均繼承Object)，如果手動(dòng)設(shè)置 ?return “1"那就會(huì)相同
2016-11-30
我也使用的hibernate5也是這樣子，剛剛查了下Java中兩個(gè)不同對(duì)象的hashcode可能相同
connection hashcode:1968552224
Hibernate:?
? ? insert?
? ? into
? ? ? ? student
? ? ? ? (sname, gender, birthday, address, sid)?
? ? values
? ? ? ? (?, ?, ?, ?, ?)
connection hashcode:1968552224
false
Hibernate:?
? ? insert?
? ? into
? ? ? ? student
? ? ? ? (sname, gender, birthday, address, sid)?
? ? values
? ? ? ? (?, ?, ?, ?, ?)
2016-08-01
因?yàn)槟泔@示的關(guān)閉了session會(huì)話(huà)，如果你注釋掉,hashcode值就會(huì)不一樣了，這也就是老師一直在證明opensesion()為什么不會(huì)自動(dòng)關(guān)閉session會(huì)話(huà)，getCurrentSession()能自動(dòng)關(guān)閉session會(huì)話(huà)了。我在評(píng)論區(qū)有具體說(shuō)明。你可以去看下
2016-06-30
不小心按了一個(gè)截圖按鈕。
console輸出是這個(gè)：
Hibernate:?
? ? drop table if exists STUDENT
Hibernate:?
? ? create table STUDENT (
? ? ? ? SID integer not null,
? ? ? ? SNAME varchar(255),
? ? ? ? BIRTHDAY datetime,
? ? ? ? ADDRESS varchar(255),
? ? ? ? primary key (SID)
? ? )
Jun 30, 2016 10:04:40 PM org.hibernate.tool.schema.internal.SchemaCreatorImpl applyImportSources
INFO: HHH000476: Executing import script 'org.hibernate.tool.schema.internal.exec.ScriptSourceInputNonExistentImpl@a7e2d9d'
1215029765
Hibernate:?
? ? insert?
? ? into
? ? ? ? STUDENT
? ? ? ? (SNAME, BIRTHDAY, ADDRESS, SID)?
? ? values
? ? ? ? (?, ?, ?, ?)
1215029765
Hibernate:?
? ? insert?
? ? into
? ? ? ? STUDENT
? ? ? ? (SNAME, BIRTHDAY, ADDRESS, SID)?
? ? values
? ? ? ? (?, ?, ?, ?)