1. 步驟一：建立WEB工程，引入需要的jar包
    * IOC的6個包
    * AOP的4個包
    * C3P0的1個包
    * MySQL的驅動包
    * JDBC目標2個包
    * 整合JUnit測試包
2.步驟二：建立資料庫的表結構

    create database spring_day03;
    use spring_day03;
    create table t_account(
        id int primary key auto_increment,
        name varchar(20),
        money double
    );
 

3.步驟三：引入配置檔案

    * 引入配置檔案
        * 引入log4j.properties

4. 步驟四：引入applicationContext.xml

　　* 基本配置為：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jdbc="http://www.springframework.org/schema/jdbc"
 
 xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd"> 
     
</beans>

　　*  使用C3P0連線池

    * 先引入C3P0的jar包
        * com.springsource.com.mchange.v2.c3p0-0.9.1.2.jar

    * 編寫配置檔案
        <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
            <property name="driverClass" value="com.mysql.jdbc.Driver"/>
            <property name="jdbcUrl" value="jdbc:mysql:///spring-day03"/>
            <property name="user" value="root"/>
            <property name="password" value="root"/>
        </bean>
 

5.步驟五：建立對應的包結構和類

    * com.huida.demo1
        * AccountService

package com.huida.demo1;

public interface AccountService {

    public void pay(String out,String in,double money);
}

        * AccountServlceImpl

package com.huida.demo1;

import javax.annotation.Resource;

import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.transaction.support.TransactionCallbackWithoutResult;
import org.springframework.transaction.support.TransactionTemplate;

public class AccountServiceImpl implements AccountService{

    @Resource(name="accountDao")
    private AccountDaoImpl accountDao;
    

    public void setAccountDao(AccountDaoImpl accountDao) {
        this.accountDao = accountDao;
    }
    @Override
    public void pay(String out,String in,double money) {

        //扣錢
        accountDao.outMoney(out, money);
        //加錢
        accountDao.inMoney(in, money);
    }

}

        * AccountDao

package com.huida.demo1;

public interface AccountDao {

    public void outMoney(String out,double money);
    public void inMoney(String in,double money);
}

        * AccountDaoImpl

package com.huida.demo1;

import org.springframework.jdbc.core.support.JdbcDaoSupport;

public class AccountDaoImpl extends JdbcDaoSupport implements AccountDao{

    @Override
    public void outMoney(String out, double money) {
        
        this.getJdbcTemplate().update("update user set money =  money - ? where name = ?", money,out);

    }

    @Override
    public void inMoney(String in, double money) {

        this.getJdbcTemplate().update("update user set money = money + ? where name=?",money,in);
        
    }
}

6.步驟六:引入Spring的配置檔案,將類配置到Spring中

    <bean id="accountService" class="com.huida.demo1.AccountServiceImpl">
    </bean>

    <bean id="accountDao" class="com.huida.demo1.AccountDaoImpl">
    </bean>

7.步驟七：在業務層注入DAO ,在DAO中注入JDBC模板（強調：簡化開發，以後DAO可以繼承JdbcDaoSupport類）

    <bean id="accountService" class="com.huida.demo1.AccountServiceImpl">
        <property name="accountDao" ref="accountDao"/>
    </bean>

    <bean id="accountDao" class="com.huida.demo1.AccountDaoImpl">
        <property name="dataSource" ref="dataSource"/>
    </bean>

8.所以總的applicationContext2.xml中的配置資訊為：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jdbc="http://www.springframework.org/schema/jdbc" xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd"> 
     
     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
         <property name="driverClass" value="com.mysql.jdbc.Driver"/>
         <property name="jdbcUrl" value="jdbc:mysql:///spring-day03"/>
         <property name="user" value="root"/>
         <property name="password" value="root"/>
     </bean>
     
    <bean id="accountDao" class="com.huida.demo1.AccountDaoImpl">
        <property name="dataSource" ref="dataSource"/>
    </bean>
     <bean id="accountService" class="com.huida.demo1.AccountServiceImpl">
            <property name="accountDao" ref="accountDao"/>
        </bean>
     
</beans>

9.步驟八：編寫測試程式.

package com.huida.demo1;

import javax.annotation.Resource;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext2.xml")
public class Demo1 {

    @Resource(name="accountService")
    private AccountService accountService;
    
    @Test
    public void run1(){
        accountService.pay("小明","小紅",1000);
    }
}

10.單元測試run1方法，重新整理spring-day03資料庫中的user表，可以看到小明同學的錢減少了1000，小紅同學的錢增加了1000。