[原]在MyEclipse中开发Hibernate入门

[标题]:在MyEclipse中开发Hibernate入门
[时间]:2009-6-17
[摘要]:一个MyEclipse Hibernate HelloWorld。
[关键字]:Hibernate，入门，MyEclipse，HelloWorld，MySQL Connector/J
[环境]:MyEclipse7 ，Hibernate3.2，MySQL5.1
[作者]:Winty ([email protected]) http://www.blogjava.net/wintys

[正文]:
1、新建工程:
    在MyEclipse中新建一个Java Web Project( 或Java Project)，名叫MyEclipseHibernate，在工程名上点击右键，在弹出菜单中选择"MyEclipse=>Add Hibernate Capabilities..."(或选择菜单栏上"MyEclipse=>Project Capabilities=>Add Hibernate Capabilities...")。其中连接数据库使用MySQL驱动(放置位置/MyEclipseHibernate/WebRoot/WEB-INF/lib/mysql-connector-java-5.1.7-bin.jar)。MySQL驱动下载地址:http://dev.mysql.com/downloads/connector/j/5.1.html。

根据提示配置，会生成类似配置文件:

/MyEclipseHibernate/src/hibernate.cfg.xml：
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

<session-factory>
    <property name="connection.username">root</property>
    <property name="connection.url">
        jdbc:mysql://localhost:3306/db
    </property>
    <property name="dialect">
        org.hibernate.dialect.MySQLDialect
    </property>
    <property name="myeclipse.connection.profile"></property>
    <property name="connection.password">root</property>
    <property name="connection.driver_class">
        com.mysql.jdbc.Driver
    </property>
    <property name="show_sql">true</property>
    <!--后来添加的BookAuthor.hbm.xml-->
    <mapping resource="wintys/hibernate/BookAuthor.hbm.xml" />

</session-factory>

</hibernate-configuration>

2、在MySQL中建立数据库表:

CREATE TABLE `bookauthor` (
  `authorId` varchar(100) NOT NULL DEFAULT '0',
  `authorAge` int(4) DEFAULT NULL,
  `authorName` varchar(20) DEFAULT NULL,
  PRIMARY KEY (`authorId`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;

3、编写实体类及映射文件:
BookAuthor.java:

package wintys.hibernate;
/**
 * BookAuthor Bean
 * @version 2009-5-19
 * @author Winty([email protected]) http://www.blogjava.net/wintys
 */
public class BookAuthor{
    private int authorId;
    private int authorAge;
    private String authorName;

    public int getAuthorId(){
        return authorId;
    }

    public void setAuthorId(int authorId){
        this.authorId = authorId;
    }

    public int getAuthorAge(){
        return authorAge;
    }

    public void setAuthorAge(int authorAge){
        this.authorAge = authorAge;
    }

    public String  getAuthorName(){
        return authorName;
    }

    public void setAuthorName(String authorName){
        this.authorName = authorName;
    }
}

编写映射文件，并将其加入到hibernate.cfg.xml映射中:
/MyEclipseHibernate/src/wintys/hibernate/BookAuthor.hbm.xml:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="wintys.hibernate.BookAuthor" table="bookauthor">
        <id name="authorId" column="authorId">
            <generator class="increment"/>
        </id>
        <property name="authorAge"/>
        <property name="authorName"/>
    </class>
</hibernate-mapping>

4、测试
/MyEclipseHibernate/WebRoot/index.jsp:

<%@page contentType="text/html;charset=GBK" %>
<%@page import="wintys.hibernate.*"%>
<%@page import="org.hibernate.*"%>
<%@page import="org.hibernate.cfg.*"%>

<%
try{
    SessionFactory sf =
        new Configuration().configure().buildSessionFactory();
    Session ss = sf.openSession();
    Transaction tc = ss.beginTransaction();
    
    BookAuthor bookAuthor = new BookAuthor();
    bookAuthor.setAuthorId(8884);
    bookAuthor.setAuthorAge(449);
    bookAuthor.setAuthorName("asefdww");
    
    ss.save(bookAuthor);
    tc.commit();
    ss.close();
    
    out.println("insert:OK");
}catch(HibernateException e){
    out.println(e.getMessage());
    e.printStackTrace();
}
%>

5、运行结果
控制显示:

Hibernate: select max(authorId) from bookauthor
Hibernate: insert into bookauthor (authorAge, authorName, authorId) values (?, ?, ?)

Web页面显示:
insert:OK

[参考资料]:
使用myeclipse开发第一个hibernate程序 : http://blog.csdn.net/freesnail/archive/2009/02/19/3908877.aspx

[附件]:手动开发Hibernate应用程序
[1]、HibernateJavaSE_HelloWorld.zip : http://2xozaw.bay.livefilestore.com/y1pseTFkzzt9ht_m4qbiNjJvgDpKT5gp1ifnbX7HLhvjkmRQY0EmSyw9aE90Bu-mp6hkHEIcTDuIvm-6l_3BmztD2kRBO5d1kZe/HibernateJavaSETest_HelloWorld.zip?download

[2]、HibernateJavaWeb_HelloWorld.zip : http://2xozaw.bay.livefilestore.com/y1pOG7LonhMrFHqc1OOqVYABFdZ8vONRfx2kgKu_TI5i6A6xqrah1fH7y2ImTcaMk-S0rrYUhoGJY7G3kqGFIrkEQ/HibernateJavaWeb_HelloWorld.zip?download