您的位置：首页 > 其它

hibernate4.2.4之环境搭建与测试实例

2013-08-14 15:03 417 查看

1.下载hibernate-release-4.2.4.Final.zip从点击打开链接(http://www.hibernate.org/downloads)下载

2.在eclipse中新建一个javaproject工程，名为hibernate_first，在hibernate_first中新建一个ilb文件夹，

解压下载的hibernate-release-4.2.4.Final.zip，打开之后有几个文件夹lib---jar库documentation--文档说明projetc---关于hibernate的配置/例子等等之类的

进入到hibernate-release-4.2.4.Final\lib\required\目录下将8个必须的jar包拷贝到hibernate_first\lib\下面并且将8个jar包单击右键选中--BuildPath--AddtoBuildPath(即添加为工程引用)

同时将mysql-connector-java-5.1.25-bin.jar添加lib包下

3.编写配置文件进入到hibernate-release-4.2.4.Final\project\etc\目录下将hibernate.cfg.xml文件拷贝到项目hibernate_first\src\目录下

将hibernate.cfg.xml文件修改为如下;

<!DOCTYPEhibernate-configurationPUBLIC "-//Hibernate/HibernateConfigurationDTD3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <propertyname="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <propertyname="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property> <propertyname="hibernate.connection.username">root</property> <propertyname="hibernate.connection.password">root</property> <propertyname="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> <propertyname="hbm2ddl.auto">create</property> <propertyname="hibernate.show_sql">true</property> <mappingresource="com/undergrowth/hibernate/domain/Student.hbm.xml"/> </session-factory> </hibernate-configuration>

简单解释一下上面的hibernate.cfg.xml文件

connection.driver_class/connection.url/connection.username/connection.password是用于mysql连接的驱动/资源定位符/登陆账号/登陆密码

hibernate.dialect是hibernate用于兼容多种数据库而做的，告诉hibernate使用的是哪一种数据库

hibernate.show_sql是在进行相应的hibernate操作时，会在控制台输出相应的sql语句

hbm2ddl.auto是在hibernate第一次进行操作时都会自己创建一个表

mappingresource用于指明对象与表的映射关系这里指的是Student类和学生表的一个映射文件下面也会介绍到

上面的这些属性其实不用记在hibernate-release-4.2.4.Final\project\etc\hibernate.properties文件中都可以找到

4.编写对象与对象的映射文件引用上面的配置建立Student.java类如下

packagecom.undergrowth; importjava.util.Date; publicclassStudent{ privateintid; publicintgetId(){ returnid; } publicvoidsetId(intid){ this.id=id; } publicStringgetName(){ returnname; } publicvoidsetName(Stringname){ this.name=name; } publicDategetBirthday(){ returnbirthday; } publicvoidsetBirthday(Datebirthday){ this.birthday=birthday; } publicStringgetMajor(){ returnmajor; } publicvoidsetMajor(Stringmajor){ this.major=major; } privateStringname; privateDatebirthday; privateStringmajor; publicStudent(Stringname,Datebirthday,Stringmajor){ this.name=name; this.birthday=birthday; this.major=major; } publicStudent(){}//用于给hibernate的反射使用 @Override publicStringtoString(){ return"Student[id="+id+",name="+name+",birthday=" +birthday+",major="+major+"]"; } }

编写Student的ORM映射文件Student.hbm.xmlhibernate自带的模板很多这里引用hibernate-release-4.2.4.Final\project\documentation\src\main\docbook\quickstart\tutorials\basic\src\test\java\org\hibernate\tutorial\hbm\目录下的Event.hbm.xml

Student.hbm.xml



<?xmlversion="1.0"?>
<!DOCTYPEhibernate-mappingPUBLIC
"-//Hibernate/HibernateMappingDTD3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mappingpackage="com.undergrowth">

<classname="Student"table="student">
<idname="id">
<generatorclass="native"/>
</id>
<propertyname="name"/>
<propertyname="birthday"/>
<propertyname="major"/>
</class>

</hibernate-mapping>

5.测试

StudentDaoInter.java

packagecom.undergrowth.inter;

importcom.undergrowth.Student;

publicinterfaceStudentDaoInter{
publicvoidsaveStudent(Studentstudent);
publicvoidupdateStudent(Studentstudent);
publicvoiddeleteStudent(Studentstudent);
publicStudentfindIdStudent(intid);
publicStudentfindNameStudent(Stringname);
}

StudentDaoImp.java

packagecom.undergrowth.imple;

importcom.undergrowth.Student;
importcom.undergrowth.hibernate.utils.HibernateUtils;
importcom.undergrowth.inter.StudentDaoInter;

publicclassStudentDaoImpimplementsStudentDaoInter{

@Override
publicvoidsaveStudent(Studentstudent){
//TODOAuto-generatedmethodstub
HibernateUtils.add(student);
}

@Override
publicvoidupdateStudent(Studentstudent){
//TODOAuto-generatedmethodstub
HibernateUtils.update(student);
}

@Override
publicvoiddeleteStudent(Studentstudent){
//TODOAuto-generatedmethodstub
HibernateUtils.delete(student);
}

@Override
publicStudentfindIdStudent(intid){
//TODOAuto-generatedmethodstub
return(Student)HibernateUtils.get(Student.class,id);
}

@Override
publicStudentfindNameStudent(Stringname){
//TODOAuto-generatedmethodstub
return(Student)HibernateUtils.get(name);
}

}

HibernateUtils.java

packagecom.undergrowth.hibernate.utils;

importjava.io.Serializable;

importorg.hibernate.HibernateException;
importorg.hibernate.Query;
importorg.hibernate.Session;
importorg.hibernate.SessionFactory;
importorg.hibernate.Transaction;
importorg.hibernate.cfg.Configuration;

publicclassHibernateUtils{
privatestaticSessionFactorysf;

static{
Configurationcfg=newConfiguration();
cfg.configure();
sf= cfg.buildSessionFactory();
}

publicstaticSessiongetSession()
{
returnsf.openSession();
}

publicstaticvoidadd(Objectentity)
{
Sessionsession=null;
Transactiontx=null;
try{
session=HibernateUtils.getSession();
tx=session.beginTransaction();
session.save(entity);
tx.commit();
}catch(HibernateExceptione){
throwe;
}finally{
if(session!=null)
session.close();
}
}

publicstaticvoiddelete(Objectentity)
{
Sessionsession=null;
Transactiontx=null;
try{
session=HibernateUtils.getSession();
tx=session.beginTransaction();
session.delete(entity);
tx.commit();
}catch(HibernateExceptione){
throwe;
}finally{
if(session!=null)
session.close();
}
}

publicstaticvoidupdate(Objectentity)
{
Sessionsession=null;
Transactiontx=null;
try{
session=HibernateUtils.getSession();
tx=session.beginTransaction();
session.update(entity);
tx.commit();
}catch(HibernateExceptione){
throwe;
}finally{
if(session!=null)
session.close();
}
}

publicstaticObjectget(Classclazz,Serializableid)
{
Sessionsession=null;
try{
session=HibernateUtils.getSession();
Objectobj=session.get(clazz,id);
returnobj;
}catch(HibernateExceptione){
throwe;
}finally{
if(session!=null)
session.close();
}
}

publicstaticObjectget(Stringname)
{
Sessionsession=null;
try{
session=HibernateUtils.getSession();
Queryquery=session.createQuery("fromStudentasstudentwherename=:name");
query.setParameter("name",name);
Objectobj=query.uniqueResult();
returnobj;
}catch(HibernateExceptione){
throwe;
}finally{
if(session!=null)
session.close();
}
}
}

HibernateTest.java

packagecom;

importjava.util.Date;

importcom.undergrowth.Student;
importcom.undergrowth.imple.StudentDaoImp;

publicclassHibernateTest{

/**
*@paramargs
*/
publicstaticvoidmain(String[]args){
//TODOAuto-generatedmethodstub
StudentDaoImpimp=newStudentDaoImp();
//添加
Studentstudent=newStudent("under",newDate(),"计算机");
System.out.println(student);
imp.saveStudent(student);
//查询
student=imp.findNameStudent("under");
System.out.println(student);
//修改
student.setMajor("电信");
imp.updateStudent(student);
//查询
student=imp.findNameStudent("under");
System.out.println(student);
//删除
imp.deleteStudent(student);

}

}

打印的控制台信息

内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理

标签：

相关文章推荐

新的分享

章节导航