dao层使用jdbcTemplate

Dao.java
import org.springframework.jdbc.core.JdbcTemplate;
public class Dao {
	private JdbcTemplate jdbcTemplate;
	public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
		this.jdbcTemplate = jdbcTemplate;
	}
	public void method()
	{
		String sql = "insert into user values(?,?)";
		jdbcTemplate.update(sql, "lili", "250");
	}
}

Service.java
public class Service {
	private Dao dao;
	public void setDao(Dao dao) {
		this.dao = dao;
	}
	public void add()
	{
		dao.method();
	}
}

springmvc.xml
<!-- 配置c3p0连接池 -->
		<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
			<property name="driverClass" value="com.mysql.jdbc.Driver"></property>
			<property name="jdbcUrl" value="jdbc:mysql:///spring"></property>
			<property name="user" value="root"></property>
			<property name="password" value="root"></property>
		</bean>
		
		<bean id="dao" class="cn.itcast.ioc.Dao">
			<property name="jdbcTemplate" ref="jdbcTemplate"></property>
		</bean>
		
		<bean id="service" class="cn.itcast.ioc.Service">
			<property name="dao" ref="dao"></property>
		</bean>
		
		<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
			<property name="dataSource" ref="dataSource"></property>
		</bean>