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JBuilderX+SQL Server开发hibernate_MySQL

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Release: 2016-06-01 14:07:08
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HibernateJBuilderSQL Server

  环境:

   开发的IDE:JBuilderX
  
   使用的数据库:MS Sql Server 2000
  
   使用的数据库驱动:JSQL Driver(JDBC 3.0)

  说明:

  1、hibernate在配置文件中明确说明“Microsoft Driver (not recommended!)”,因此先使用JSQL Driver。
  
  2、JSQL Driver可以到http://www.jnetdirect.com中得到,需要先注册个用户,才能下载到试用的版本。

  3、JDBC3.0只能在JDK1.4及以上版本中使用,JBuilderX默认的是JDK1.4

  准备工作:

  1、下载Hibernate,目前最高版本是2.1.2

  2、在JBuilder中创建一个lib,起名为hibernate_full,将hibernatelib下的所有jar通通放进去,并将hibernatehibernate2.jar也放进去

  3、在JBuilder中创建一个lib,起名为JSQL3,将JSQL Driver下的JNetDirectJSQLConnectJDBC_3.0_DriverJSQLConnect.jar放进去

  开始进行例子:
  
  1、创建一个project,命名为testhibernate

  2、在属性里的Required Libraries里加入hibernate_full和JSQL3

  3、在菜单Project --> Project Properties --> Build --> Resource 里选中xml文件,选择“Copy” --在编译该项目的时候,会自动将src文件夹里的xml文件拷贝到classes文件夹里的相应目录下

  4、在testhibernate项目中创建一个src目录

  5、将hibernate源文件里的hibernatesrchibernate.properties 和 log4j.properties拷贝到testhibernate项目中的src目录下

  6、修改hibernate.properties中关于MS Sql Server 2000驱动方面的配置

  找到

  ## HypersonicSQL

  hibernate.dialect net.sf.hibernate.dialect.HSQLDialect
  hibernate.connection.driver_class org.hsqldb.jdbcDriver
  hibernate.connection.username sa
  hibernate.connection.password
  hibernate.connection.url jdbc:hsqldb:hsql://localhost
  hibernate.connection.url jdbc:hsqldb:test
  hibernate.connection.url jdbc:hsqldb:.

  这段,这里是说默认的是使用HypersonicSQL,我们使用的是MS Sql Server,因此将整段注释掉

  ## HypersonicSQL

  #hibernate.dialect net.sf.hibernate.dialect.HSQLDialect
  #hibernate.connection.driver_class org.hsqldb.jdbcDriver
  #hibernate.connection.username sa
  #hibernate.connection.password
  #hibernate.connection.url jdbc:hsqldb:hsql://localhost
  #hibernate.connection.url jdbc:hsqldb:test
  #hibernate.connection.url jdbc:hsqldb:.

  并且,找到

  ## MS SQL Server

  #hibernate.dialect net.sf.hibernate.dialect.SQLServerDialect
  #hibernate.connection.username sa
  #hibernate.connection.password sa

  ## JSQL Driver
  #hibernate.connection.driver_class com.jnetdirect.jsql.JSQLDriver
  #hibernate.connection.url jdbc:JSQLConnect://1E1/test

  这段,比如我们使用的数据库服务器机器名为yuj,数据库名为testhi,连接到数据库上去的用户名为sa,密码为sa,则修改后这段成为

  ## MS SQL Server

  hibernate.dialect net.sf.hibernate.dialect.SQLServerDialect
  hibernate.connection.username sa
  hibernate.connection.password sa

  ## JSQL Driver
  hibernate.connection.driver_class com.jnetdirect.jsql.JSQLDriver
  hibernate.connection.url jdbc:JSQLConnect://yuj/testhi

  7、创建一个类testhibernate.Person,这是个标准的JavaBean,只有3个属性和相应的getset方法

  package testhibernate;

  public class Person
  {
  private String id;
  private String name;
  private String address;

  public void setId(String value)
  {
  this.id = value;
  }

  public String getId()
  {
  return id;
  }

  public void setName(String value)
  {
  this.name = value;
  }

  public String getName()
  {
  return name;
  }

  public void setAddress(String value)
  {
  this.address = value;
  }

  public String getAddress()
  {
  return address;
  }
  }

   8、创建一个对象-关系映射的xml文件Person.hbm.xml,放在和Person.java相同的目录下面

  <?xml version="1.0" encoding="GB2312"?>
  <!DOCTYPE hibernate-mapping SYSTEM "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >
  <hibernate-mapping>
  <class name="testhibernate.Person">
  <!--hibernate为我们生成主键id-->
  <id name = "id" unsaved-value = "null">
   <generator class="uuid.hex"/>
  </id>

  <!--默认把类的变量映射为相同名字的表列,当然我们可以修改其映射方式-->
  <property name="name"/>
  <property name="address"/>
  </class>
  </hibernate-mapping>

  9、创建调用类Person的客户端程序Client1.java

  package testhibernate;

  import net.sf.hibernate.Session;
  import net.sf.hibernate.Transaction;
  import net.sf.hibernate.SessionFactory;
  import net.sf.hibernate.cfg.Configuration;
  import net.sf.hibernate.tool.hbm2ddl.SchemaExport;

  /**
  *本类只是用来创建表的,并不往表内部插入任何数据,并且只能使用一次,否则会删除已有的表的
  */
  public class Client1
  {
  private static SessionFactory sessionFactory;

  public static void main(String[] args) throws Exception
  {
  Configuration conf = new Configuration().addClass(Person.class);

  //第一次运行时用来在数据库中创建表
  //并且把sql语句输出到txt文件用的
  //以后的运行不能使用该段代码,否则每次都会先删除原表,再新建该表
  SchemaExport dbExport = new SchemaExport(conf);
  dbExport.setOutputFile("sql.txt");
  dbExport.create(true, true);
  }
  }

  package testhibernate;

  import net.sf.hibernate.Session;
  import net.sf.hibernate.Transaction;
  import net.sf.hibernate.SessionFactory;
  import net.sf.hibernate.cfg.Configuration;
  import net.sf.hibernate.tool.hbm2ddl.SchemaExport;

  public class Client2
  {
  private static SessionFactory sessionFactory;

  public static void main(String[] args) throws Exception
  {
  Configuration conf = new Configuration().addClass(Person.class);
  sessionFactory = conf.buildSessionFactory();
  Session s = sessionFactory.openSession();

  Transaction t = s.beginTransaction();

  Person yuj = new Person();
  yuj.setName("john");
  yuj.setAddress("上海");

  Person x = new Person();
  x.setName("zhaoyh");
  x.setAddress("上海");

  //持久化
  s.save(yuj); //此时yuj已经可以在数据库中找到
  s.save(x); //此时x已经可以在数据库中找到

  t.commit();
  s.close();
  }
  }

  查看数据库中,增加了2条记录,OK!初步使用成功了,剩下的慢慢研究吧……



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