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.Finallibrequired。
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.Finallibrequired),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;
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(b)切换数据库:
(c)创建Student表:
- create table Student(id int primary key,name varchar(20),age int);
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5.建立hibernate的配置文件hibernate.cfg.xml,强烈建议在hibernate-release-4.3.5.Finaldocumentationmanualen-UShtml_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>
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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;
- }
- }
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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>
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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();
- }
- }
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希望本文所述对大家Hibernate框架程序设计有所帮助。 |