Hibernate是什么：

Hibernate 架构：

下载、安装、必要的 jar包、环境CLASSPAST的设置（此步骤省略）

配置文件 hibernate.cfg.xml：

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM 
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
	<session-factory>
		<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
		<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>

		<!-- Assume testone is the database name -->
		<property name="hibernate.connection.url">jdbc:mysql://localhost/testone</property>
		<property name="hibernate.connection.username">root</property>
		<property name="hibernate.connection.password">yanfei</property>
		<property name="hibernate.show_sql">true</property>
		
		<!-- List of XML mapping files -->
		<mapping resource="resource/Employee.hbm.xml" />

	</session-factory>
</hibernate-configuration>

创建持久化类：

package com.jiangge.hblearn;

/**
 * @author jiangge
 * 
 */
public class Employee
{
	private int id;
	private String firstName;
	private String lastName;
	private int salary;
	
	public Employee()
	{
	}
	public Employee(String firstName, String lastName, int salary)
	{
		super();
		this.firstName = firstName;
		this.lastName = lastName;
		this.salary = salary;
	}
	public int getId()
	{
		return id;
	}
	public void setId(int id)
	{
		this.id = id;
	}
	public String getFirstName()
	{
		return firstName;
	}
	public void setFirstName(String firstName)
	{
		this.firstName = firstName;
	}
	public String getLastName()
	{
		return lastName;
	}
	public void setLastName(String lastName)
	{
		this.lastName = lastName;
	}
	public int getSalary()
	{
		return salary;
	}
	public void setSalary(int salary)
	{
		this.salary = salary;
	}
}

create table EMPLOYEE (
   id INT NOT NULL auto_increment,
   first_name VARCHAR(20) default NULL,
   last_name  VARCHAR(20) default NULL,
   salary     INT  default NULL,
   PRIMARY KEY (id)
);

配置文件--映射文件Employee.hbm.xml：

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC 
 "-//Hibernate/Hibernate Mapping DTD//EN"
 "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
	<class name="com.jiangge.hblearn.Employee" table="EMPLOYEE">
		<meta attribute="class-description">This class contains the employee detail.</meta>
		
		<id name="id" column="id" type="int">
			<generator class="native" />
		</id>
		<property name="firstName" column="first_name" type="string" />
		<property name="lastName" column="last_name" type="string" />
		<property name="salary" column="salary" type="int" />
	</class>
</hibernate-mapping>

package com.jiangge.hblearn;

import java.util.List;
import java.util.Iterator;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

/**
 * hibernate CRUD操作
 * @author jiangge
 */
public class ManageEmployee
{
	private static SessionFactory factory;

	public static void main(String[] args)
	{
		try
		{
			factory = new Configuration().configure().buildSessionFactory();
		} 
		catch (Throwable ex)
		{
			System.err.println("Failed to create sessionFactory object." + ex);
			throw new ExceptionInInitializerError(ex);
		}
		ManageEmployee ME = new ManageEmployee();

		/* Add few employee records in database */
		Integer empID1 = ME.addEmployee("Zara", "Ali", 1000);
		Integer empID2 = ME.addEmployee("Daisy", "Das", 5000);
		Integer empID3 = ME.addEmployee("John", "Paul", 10000);

		/* List down all the employees */
		ME.listEmployees();

		/* Update employee's records */
		ME.updateEmployee(empID1, 5000);

		/* Delete an employee from the database */
		ME.deleteEmployee(empID2);

		/* List down new list of the employees */
		ME.listEmployees();
	}

	/* Method to CREATE an employee in the database */
	public Integer addEmployee(String fname, String lname, int salary)
	{
		Session session = factory.openSession();
		Transaction tx = null;
		Integer employeeID = null;
		try
		{
			tx = session.beginTransaction();
			Employee employee = new Employee(fname, lname, salary);
			employeeID = (Integer) session.save(employee);
			tx.commit();
		} 
		catch (HibernateException e)
		{
			if (tx != null)
				tx.rollback();
			e.printStackTrace();
		} 
		finally
		{
			session.close();
		}
		return employeeID;
	}

	/* Method to READ all the employees */
	public void listEmployees()
	{
		Session session = factory.openSession();
		Transaction tx = null;
		try
		{
			tx = session.beginTransaction();
			List employees = session.createQuery("FROM Employee").list();
			for (Iterator iterator = employees.iterator(); iterator.hasNext();)
			{
				Employee employee = (Employee) iterator.next();
				System.out.print("First Name: " + employee.getFirstName());
				System.out.print("  Last Name: " + employee.getLastName());
				System.out.println("  Salary: " + employee.getSalary());
			}
			tx.commit();
		} 
		catch (HibernateException e)
		{
			if (tx != null)
				tx.rollback();
			e.printStackTrace();
		} 
		finally
		{
			session.close();
		}
	}

	/* Method to UPDATE salary for an employee */
	public void updateEmployee(Integer EmployeeID, int salary)
	{
		Session session = factory.openSession();
		Transaction tx = null;
		try
		{
			tx = session.beginTransaction();
			Employee employee = (Employee) session.get(Employee.class, EmployeeID);
			employee.setSalary(salary);
			session.update(employee);
			tx.commit();
		}
		catch (HibernateException e)
		{
			if (tx != null)
				tx.rollback();
			e.printStackTrace();
		} 
		finally
		{
			session.close();
		}
	}

	/* Method to DELETE an employee from the records */
	public void deleteEmployee(Integer EmployeeID)
	{
		Session session = factory.openSession();
		Transaction tx = null;
		try
		{
			tx = session.beginTransaction();
			Employee employee = (Employee) session.get(Employee.class, EmployeeID);
			session.delete(employee);
			tx.commit();
		}
		catch (HibernateException e)
		{
			if (tx != null)
				tx.rollback();
			e.printStackTrace();
		} 
		finally
		{
			session.close();
		}
	}
}

运行结果，IDE的Console输出：

log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.
Hibernate: insert into EMPLOYEE (first_name, last_name, salary) values (?, ?, ?)
Hibernate: insert into EMPLOYEE (first_name, last_name, salary) values (?, ?, ?)
Hibernate: insert into EMPLOYEE (first_name, last_name, salary) values (?, ?, ?)
Hibernate: select employee0_.id as id0_, employee0_.first_name as first2_0_, employee0_.last_name as last3_0_, employee0_.salary as salary0_ from EMPLOYEE employee0_
First Name: Zara  Last Name: Ali  Salary: 1000
First Name: Daisy  Last Name: Das  Salary: 5000
First Name: John  Last Name: Paul  Salary: 10000
Hibernate: select employee0_.id as id0_0_, employee0_.first_name as first2_0_0_, employee0_.last_name as last3_0_0_, employee0_.salary as salary0_0_ from EMPLOYEE employee0_ where employee0_.id=?
Hibernate: update EMPLOYEE set first_name=?, last_name=?, salary=? where id=?
Hibernate: select employee0_.id as id0_0_, employee0_.first_name as first2_0_0_, employee0_.last_name as last3_0_0_, employee0_.salary as salary0_0_ from EMPLOYEE employee0_ where employee0_.id=?
Hibernate: delete from EMPLOYEE where id=?
Hibernate: select employee0_.id as id0_, employee0_.first_name as first2_0_, employee0_.last_name as last3_0_, employee0_.salary as salary0_ from EMPLOYEE employee0_
First Name: Zara  Last Name: Ali  Salary: 5000
First Name: John  Last Name: Paul  Salary: 10000

mysql> select * from EMPLOYEE;
+----+------------+-----------+--------+
| id | first_name | last_name | salary |
+----+------------+-----------+--------+
|  1 | Zara       | Ali       |   5000 |
|  3 | John       | Paul      |  10000 |
+----+------------+-----------+--------+
2 rows in set

1、英文： http://www.tutorialspoint.com/hibernate/hibernate_quick_guide.htm  

2、中文：http://blog.csdn.net/zs234/article/details/9212045 入门系列文章

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