spring和ibatis综合应用入门示例

1、最近几天在学习ibatis和spring，就把两者综合起来，写了示例。
2、构建数据库表user，使用数据库是mysql；

create table user(
   id int(10) not null auto_increment,
   userName varchar(20) ,
   passWord varchar(20),
   primary key(id) 
);

insert into user(userName,passWord) values('admin1','admin1');
insert into user(userName,passWord) values('admin2','admin2');
insert into user(userName,passWord) values('admin3','admin3');
insert into user(userName,passWord) values('admin4','admin4');

2、根据数据库表生成相应的JavaBean

package com.tonyj.bean;
/**
 * @author tonyJ
 * @date 2012-3-17 下午01:00:25
 */
public class User {
	private int id;
	private String userName;
	private String passWord;
	//相应的getter和setter方法，构造方法
}

3、对应JavaBean的配置文件User.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap
PUBLIC "-//ibatis.apache.org//DTD SQL MAP 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-2.dtd">
<sqlMap>
	<typeAlias alias="User" type="com.tonyj.bean.User"/>
	<resultMap class="User" id="userResultMap">
		<result property="id" column="id"/>
		<result property="userName" column="userName"/>
		<result property="passWord" column="passWord"/>
	</resultMap>
	<!-- 获得全查询列表 -->
	<select id="getAllUsers" resultMap="userResultMap">
		select * from user
	</select>
	<!-- 根据用户名查询用户对象 -->
	<select id="getUserByName" resultMap="userResultMap" parameterClass="String">
		select * from user where userName=#value#
	</select>
	<!-- 根据用户id查询用户对象 -->
	<select id="getUserById" resultMap="userResultMap" parameterClass="Integer">
		select * from user where id=#value#
	</select>
	<!--新增用户对象 -->
	<insert id="insertUser" parameterClass="User">
		insert into user(userName,passWord) values(#userName#,#passWord#)
	</insert>
	<!-- 删除用户对象 -->
	<delete id="deleteUser" parameterClass="Integer">
		delete from users where id=#id#
    </delete>
    <!-- 更新用户对象 -->
    <update id="updateUser" parameterClass="User">
    	update user set userName=#userName#,passWord=#passWord# where id=#id#
    </update>
</sqlMap>

4、ibatis和spring的配置文件
ibatis的配置sqlMapConfig.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMapConfig
PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-config-2.dtd">
<sqlMapConfig>
	<sqlMap resource="User.xml"/>
</sqlMapConfig>

spring的配置applicationContext.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING/DTD BEAN/EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName">
			<value>com.mysql.jdbc.Driver</value>
		</property>
		<property name="username">
			<value>root</value>
		</property>
		<property name="password">
			<value>sa</value>
		</property>
		<property name="url">
			<value>jdbc:mysql://localhost:3306/vin</value>
		</property>
	</bean>
	<bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
		<!-- 此处应注入ibatis配置文件，而非sqlMap文件，否则会出现“there is no statement.....异常” -->
		<property name="configLocation" value="SqlMapConfig.xml"/>
	</bean>
	<bean id="IUserDao" class="com.tonyj.dao.impl.IUserDao">
		<property name="dataSource">
			<ref bean="dataSource"/>
		</property>
		<property name="sqlMapClient">
			<ref  bean="sqlMapClient"/>
		</property>
	</bean>
</beans>

5、编写相应的类
UserDao.java

package com.tonyj.dao;

import java.util.List;

import com.tonyj.bean.User;

/**
 * @author tonyJ
 * @date 2012-3-17 下午12:59:22
 */
public interface UserDao {
	public List<User> getUserList();
	public User getUserByName(String userName);
	public User getUserById(int id);
	public void saveUser(User user);
	public int updateUser(User user);
	public int deleteUser(int id);
}

IUserDao.java

package com.tonyj.dao.impl;

import java.util.List;

import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport;

import com.tonyj.bean.User;
import com.tonyj.dao.UserDao;

/**
 * @author tonyJ
 * @date 2012-3-17 下午01:04:23
 */
public class IUserDao extends SqlMapClientDaoSupport implements UserDao{

	@SuppressWarnings("unchecked")
	@Override
	public List<User> getUserList() {
		return getSqlMapClientTemplate().queryForList("getAllUsers");
	}

	@Override
	public User getUserByName(String userName) {
		return (User) getSqlMapClientTemplate().queryForObject("getUserByName", userName);
	}

	@Override
	public User getUserById(int id) {
		return (User) getSqlMapClientTemplate().queryForObject("getUserById", id);
	}

	@Override
	public void saveUser(User user) {
		getSqlMapClientTemplate().insert("insertUser", user);
	}

	@Override
	public int updateUser(User user) {
		return getSqlMapClientTemplate().update("updateUser",user);
	}

	@Override
	public int deleteUser(int id) {
		return getSqlMapClientTemplate().delete("deleteUser", id);
	}

}

TestIUserDao.java

package com.tonyj.test;

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

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.tonyj.bean.User;
import com.tonyj.dao.impl.IUserDao;

/**
 * @author tonyJ
 * @date 2012-3-17 下午01:37:19
 */
public class TestIUserDao {
	public static void main(String[] args) {
		ApplicationContext act=new ClassPathXmlApplicationContext("applicationContext.xml");
		IUserDao iud=(IUserDao) act.getBean("IUserDao");

		//1、取得所有的对象
		List<User> allUsers=new ArrayList<User>();
		allUsers=iud.getUserList();
		for(Iterator<User> iter=allUsers.iterator();iter.hasNext();){
			User users=iter.next();
			System.out.println(users.getId()+"-->"+users.getUserName()+"-->"+users.getPassWord());
		}

		//2、根据用户名查询
		User getUserByName=new User();
		getUserByName=iud.getUserByName("admin1");
		System.out.println("根据用户名查询->"+getUserByName.getId()+"-->"+getUserByName.getPassWord());

		//3、根据用户id查询
		User getUserById=new User();
		getUserById=iud.getUserById(1);
		System.out.println("根据用户id查询"+getUserById.getUserName()+"-->"+getUserById.getPassWord());

	}
}

6、项目的包结构
[img]http://dl.iteye.com/upload/attachment/0065/1767/ed056e71-c5cc-369a-b221-96bcf9e3b4e1.png[/img]

7、程序结构如下：

2012-3-20 19:49:08 org.springframework.context.support.AbstractApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@4b4333: display name [org.springframework.context.support.ClassPathXmlApplicationContext@4b4333]; startup date [Tue Mar 20 19:49:08 CST 2012]; root of context hierarchy
2012-3-20 19:49:09 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [applicationContext.xml]
2012-3-20 19:49:09 org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory
信息: Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext@4b4333]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1632c2d
2012-3-20 19:49:09 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1632c2d: defining beans [dataSource,sqlMapClient,IUserDao]; root of factory hierarchy
1-->admin1-->admin1
2-->admin2-->admin2
3-->admin3-->admin3
4-->admin4-->admin4
根据用户名查询->1-->admin1
根据用户id查询admin1-->admin1