使用hibernate进行CURD操作

gradle配置相关jar包

dependencies {
// https://mvnrepository.com/artifact/org.testng/testng compile group: 'org.testng', name: 'testng', version: '6.9.10'
// https://mvnrepository.com/artifact/org.hibernate/hibernate-core compile group: 'org.hibernate', name: 'hibernate-core', version: '4.2.3.Final'
// https://mvnrepository.com/artifact/mysql/mysql-connector-java compile group: 'mysql', name: 'mysql-connector-java', version: '5.1.6'

}

编写HibernateUtil工具

public class HibernateUtil {
private static SessionFactory sessionFactory;
private static Session session;
private static Transaction transaction;

//static静态代码在类加载时初始化，在构造方法之前初始化
static{
//创建配置对象
Configuration config=new Configuration().configure();
//创建服务注册对象
ServiceRegistry serviceRegistry=new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry();
//创建会话工厂对象
sessionFactory=config.buildSessionFactory(serviceRegistry);
//会话对象
session=sessionFactory.openSession();
//创建事务
transaction=session.beginTransaction();

}

public static Session getSession(){
return session;
}

public static void close(Session session){
transaction.commit();//提交事务
if(session!=null) {
session.close();//关闭会话
sessionFactory.close();//关闭会话工厂
}

}
}

hibernate.cfg.xml配置文件

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.username">root</property>
<property name="connection.password">root</property>
<!-- DB schema will be updated if needed -->
<property name="show_sql">true</property><!--展示sql语句-->
<property name="format_sql">true</property><!--格式化sql语句-->
<property name="hbm2ddl.auto">update</property><!--帮助java代码生成数据库脚本，进而生成具体的表结构-->

<mapping resource="hbm/students.hbm.xml"/>
</session-factory>
</hibernate-configuration>

student.hbm.xml 映射配置文件

<?xml version="1.0" encoding='UTF-8'?>

<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="com.sun.dto">
<class name="Student" table="t_secondhand_pic">
<id name="iAutoID" type="int">
<column name="iAutoID"/>
<generator class="increment"/>
</id>
<property name="iSecondhandID" type="int">
<column name="iSecondhandID"/>
</property>
<property name="sImgKey" type="string">
<column name="sImgKey"/>
</property>
<property name="sExt" type="string">
<column name="sExt"/>
</property>
<property name="iDefault" type="int">
<column name="iDefault"/>
</property>
<property name="iStatus" type="int">
<column name="iStatus"/>
</property>
<property name="iCreateTime" type="int">
<column name="iCreateTime"/>
</property>
<property name="iUpdateTime" type="int">
<column name="iUpdateTime"/>
</property>
<property name="iImgType" type="int">
<column name="iImgType"/>
</property>
<property name="iRank" type="int">
<column name="iRank"/>
</property>

<!--配置单向的一对多关联关系-->
<!--<set name="sts" table="t_secondahnd_pic">
<!–指定关联的外键列–>
<key column="iAutoID"/>
<one-to-many class="com.sun.dto.Student"/>
</set>-->
</class>

</hibernate-mapping>

创建Student学生类

public class Student {
private int iAutoID;
private int iSecondhandID;
private String sImgKey;
private String sExt;
private int iDefault;
private int iStatus;
private int iCreateTime;
private int iUpdateTime;
private int iImgType;
private int iRank;

public Student() {

}

public Student(int iSecondhandID, String sImgKey, String sExt, int iDefault, int iStatus, int iCreateTime, int iUpdateTime, int iImgType, int iRank) {
this.iSecondhandID = iSecondhandID;
this.sImgKey = sImgKey;
this.sExt = sExt;
this.iDefault = iDefault;
this.iStatus = iStatus;
this.iCreateTime = iCreateTime;
this.iUpdateTime = iUpdateTime;
this.iImgType = iImgType;
this.iRank = iRank;
}

public int getiAutoID() {
return iAutoID;
}

public void setiAutoID(int iAutoID) {
this.iAutoID = iAutoID;
}

public int getiSecondhandID() {
return iSecondhandID;
}

public void setiSecondhandID(int iSecondhandID) {
this.iSecondhandID = iSecondhandID;
}

public String getsImgKey() {
return sImgKey;
}

public void setsImgKey(String sImgKey) {
this.sImgKey = sImgKey;
}

public String getsExt() {
return sExt;
}

public void setsExt(String sExt) {
this.sExt = sExt;
}

public int getiDefault() {
return iDefault;
}

public void setiDefault(int iDefault) {
this.iDefault = iDefault;
}

public int getiStatus() {
return iStatus;
}

public void setiStatus(int iStatus) {
this.iStatus = iStatus;
}

public int getiCreateTime() {
return iCreateTime;
}

public void setiCreateTime(int iCreateTime) {
this.iCreateTime = iCreateTime;
}

public int getiUpdateTime() {
return iUpdateTime;
}

public void setiUpdateTime(int iUpdateTime) {
this.iUpdateTime = iUpdateTime;
}

public int getiImgType() {
return iImgType;
}

public void setiImgType(int iImgType) {
this.iImgType = iImgType;
}

public int getiRank() {
return iRank;
}

public void setiRank(int iRank) {
this.iRank = iRank;
}

@Override
public String toString() {
return "Student{" +
"iAutoID=" + iAutoID +
", iSecondhandID=" + iSecondhandID +
", sImgKey='" + sImgKey + '\'' +
", sExt='" + sExt + '\'' +
", iDefault=" + iDefault +
", iStatus=" + iStatus +
", iCreateTime=" + iCreateTime +
", iUpdateTime=" + iUpdateTime +
", iImgType=" + iImgType +
", iRank=" + iRank +
'}';
}
}

编写Student测试类

public class StudentTest {
private Session session;

@BeforeClass
public void init() {
session= HibernateUtil.getSession();
}

@Test
public void run() {
Student student=new Student();
student.setiDefault(2);
student.setsImgKey("222");
student.setsExt("jpg");
//session.save(student);
//student= (Student) session.get(Student.class,17699669);
//System.out.println(student);
Query query=session.createQuery("from Student where iAutoID in :ids");
List list=new ArrayList();
list.add(1);
list.add(3);
list.add(5);
list.add(6);
list.add(10);

query.setParameterList("ids",list);

query.list().forEach(s -> System.out.println(s));
}

@AfterClass
public void destory() {
HibernateUtil.close(session);
}
}