本文实例讲述了Hibernate环境搭建与配置方法。分享给大家供大家参考,具体如下:
1.下载hibernate jar包:hibernate-release-4.3.5.Final,导入必要的jar包,路径为:hibernate-release-4.3.5.Final\lib\required。
包含的jar包有10个。
2.建立新的java项目。
3.学习自己建立User Library:
(a)项目右键——build path——configure build path——add library.
(b)选择User-library,在其中新建library,命名为hibernate。
(c)在library中加入hibernate所需要的jar包(路径为:hibernate-release-4.3.5.Final\lib\required),hello world就够了,其他的还要加。
4.引入数据库的jdbc驱动。我用的mysql:mysql-connector-java-5.1.7-bin.jar
(a)创建数据库:
create database hibernate;
(b)切换数据库:
use hibernate;
(c)创建Student表:
create table Student(id int primary key,name varchar(20),age int);
5.建立hibernate的配置文件hibernate.cfg.xml,强烈建议在hibernate-release-4.3.5.Final\documentation\manual\en-US\html_single路径下的帮助文档中copy。
地点:1.1.4. Hibernate configuration。 内容修改后:
<?xml version='1.0' encoding='utf-8'?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <!-- Database connection settings --> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="connection.url">jdbc:mysql://localhost/hibernate</property> <property name="connection.username">XXX</property> <property name="connection.password">XXXX</property> <!-- JDBC connection pool (use the built-in) --> <!-- <property name="connection.pool_size">1</property> --> <!-- SQL dialect --> <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <!-- Enable Hibernate's automatic session context management --> <property name="current_session_context_class">thread</property> <!-- Disable the second-level cache --> <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property> <!-- Echo all executed SQL to stdout --> <property name="show_sql">true</property> <!-- Drop and re-create the database schema on startup --> <!-- <property name="hbm2ddl.auto">update</property> --> <mapping resource="com/huxing/hibernate/model/Student.hbm.xml"/> </session-factory> </hibernate-configuration>
建立Student类:
public class Student { private int id; private String name; private int age; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } }
建立Student的映射文件:Student.hbm.xml
<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.huxing.hibernate.model"> <class name="Student" table="student"> <id name="id" column="id"> </id> <property name="name" type="string" column="name"/> <property name="age" type="int" column="age"/> </class> </hibernate-mapping>
最后测试:
import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import com.huxing.hibernate.model.Student; public class StudentTest { public static void main(String[] args) { Student a = new Student(); a.setId(123); a.setAge(32); a.setName("hello hibernate!"); Configuration cfg = new Configuration(); SessionFactory cf = cfg.configure().buildSessionFactory(); Session session = cf.openSession(); session.beginTransaction(); session.save(a); session.getTransaction().commit(); session.close(); cf.close(); } }
希望本文所述对大家Hibernate框架程序设计有所帮助。
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