使用Hibernate连接SQL数据库

使用Hibernate连接SQL数据库(环境:eclipse3.1, tomecat 5.0.28)
need: Hibernate-3.1.zip,msjdbc.tar

1、在eclipse中建立一个tomcat新工程,如:HibernateForMSSql。
2、解压得到hibernate-3.1目录,把目录下hibernate3.jar以及/lib中的所有*.jar拷贝到HibernateForMSSql/WEB-INF/lib中。
3、将msjdbc.tar解压得到的msjdbc/lib中的三个jar文件拷贝到HibernateForMSSql/WEB-INF/lib中;将etc/目录下的log4j.properties文件放入到WEB-INF/classes下面
4、在eclipse中,选中项目,在弹出菜单中->Build Path->Add Library->User Library,新建User Library取名为hibernate1,将
刚才加入到HibernateForMSSql/WEB-INF/lib中的包导入。
5、在WEB-INF/src中,编写ADO对象,本例为Customer.java:
public class Customer {
 private int id;
 private String username;
 private String password;
 
 public int getId() {
  return id;
 }
 
 public String getPassword() {
  return password;
 }
 
 public String getUsername() {
  return username;
 }
 
 public void setId(int id) {
  this.id = id;
 }
 
 public void setPassword(String password) {
  this.password = password;
 }
 
 public void setUsername(String username) {
  this.username = username;
 }
}
6、在SQL数据库加入对应的数据表,本例新建数据库hibernate_test
CREATE TABLE CUSTOMER
(
    CID INTEGER NOT NULL PRIMARY KEY,
    USERNAME VARCHAR(12) NOT NULL,
    PASSWORD VARCHAR(12)
);
7、在WEB-INF/src中加入数据映射定义Customer.hbm.xml (以hbm.xml作为后缀是约定的名称)
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="Customer" table="CUSTOMER">
        <id name="id" column="CID">
            <generator class="uuid" />
        </id>
        <property name="username" column="USERNAME" />
        <property name="password" column="PASSWORD" />
    </class>
</hibernate-mapping>

8、编写Hibernate配置文件,hibernate.cfg.xml放到WEB-INF/classes根目录下。(注:把它放到src下eclipse会把它拷贝过去,
直接放到classes下可能被IDE删除。)
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd" >
   
<hibernate-configuration>

  <session-factory>
    <!--
    <property name="connection.datasource">java:comp/env/jdbc/mydb</property>
    -->
   
    <property name="generate_statistics">true</property>
   
    <property name="dialect">org.hibernate.dialect.SQLServerDialect</property>     
    <property name="connection.driver_class">com.microsoft.jdbc.sqlserver.SQLServerDriver</property> 
    <property name="connection.pool_size">150</property>
    <property name="connection.url">jdbc:microsoft:sqlserver://localhost:1433;database=hibernate_test</property>   
    <property name="connection.username">sa</property>
    <property name="connection.password">123</property>   
    <property name="hibernate.default_catalog">hibernate_test</property>
    <property name="hibernate.default_schema">dbo</property>
   
    <property name="show_sql">false</property>   
   
    <mapping resource="Customer.hbm.xml"/>
  </session-factory>
 
</hibernate-configuration>
9、加入测试代码到WEB-INF/src中,Test.java
import org.hibernate.*;
import org.hibernate.cfg.*;
public class Test {
 public static void main(String[] args) {
  try {
   SessionFactory sf = new Configuration().configure().buildSessionFactory();
   Session session = sf.openSession();
   Transaction tx = session.beginTransaction();
   
   for (int i = 0; i < 200; i++) {
    Customer customer = new Customer();
    customer.setUsername("customer" + i);
    customer.setPassword("customer");
    session.save(customer);    
   }   
   tx.commit();
   session.close();
  } catch (HibernateException e) {
   e.printStackTrace();
  }
 }
}
10、去数据库里面看看,加入了200条记录哦。

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