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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