Oops! Eclipse + Hibernate Quick Start
Purpose:
学会使用Hibernate
Precondition:
eclipse-java-europa-win32.zip
hibernate-3.2.5.ga.zip
mysql-5.0.45-win32.zip
Quick Start:
在mySql数据库里面添加一张表。
对应的sql语句是：
CREATE TABLE CUSTOMER(
CID INTEGER,
USERNAME VARCHAR(12) NOT NULL,
PASSWORD VARCHAR(12)
);
ALTER TABLE CUSTOMER ADD CONSTRAINT PK PRIMARY KEY(CID);
在eclipse里面新建一个java project, 项目名为：Oops_hibernate
新建一个lib目录，在lib目录下面添加以下jar包，全部可以在hibernate.zip文件里面找到
选择project – properties – java build path – libraries – add jars
把Oops_hibernate目录下面的所有lib加进来
在src目录下面添加以下文件：
Customer.hbm.xml
<! DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >
< hibernate-mapping >
< class name ="Customer" table ="CUSTOMER" >
< id name ="id" column ="CID" >
< generator class ="increment" />
</ id >
< property name ="username" column ="USERNAME" />
< property name ="password" column ="PASSWORD" />
</ class >
</ hibernate-mapping >
Customer.java
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;
}
}
hibernate.cfg.xml，注意红色部分要和数据库对应。
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE hibernate-configuration
PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">
<hibernate-configuration>
<session-factory name="java:/hibernate/HibernateFactory">
<property name="show_sql">true</property>
<property name="connection.driver_class">
com.mysql.jdbc.Driver
</property>
<property name="connection.url">
jdbc:mysql://localhost:3306/test
</property>
<property name="connection.username">
root
</property>
<property name="connection.password">
admin
</property>
<property name="dialect">
org.hibernate.dialect.MySQLDialect
</property>
<mapping resource="Customer.hbm.xml" />
</session-factory>
</hibernate-configuration>
Test.java
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();
}
}
}
右键点击项目，Run as – java application
在窗口选择Test
运行，完成！