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Hibernate环境搭建与配置方法(Hello world配置文件版)

2019-11-26 14:29:31
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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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