spring容器获取DataSource对象，进行简单数据库应用

1

创建Sping环境。

在SPring容器里，配置DataSource，数据源。

<?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:p="http://www.springframework.org/schema/p"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

<property name="driverClass" value="com.mysql.jdbc.Driver"></property>

<property name="jdbcUrl" value="jdbc:mysql://localhost/news"/>

<property name="user" value="root"/>

<property name="password" value="admin"/>

<property name="maxPoolSize" value="200"/>

<property name="minPoolSize" value="2"/>

<property name="initialPoolSize" value="2"/>

<property name="maxIdleTime" value="200"/>

</bean>

</beans>



2

编写测试类：

package test;

import java.sql.Connection;

import java.sql.PreparedStatement;

import javax.sql.DataSource;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class BeanTest {

public static void main(String args[])throws Exception{

ApplicationContext ctx=new ClassPathXmlApplicationContext("beans.xml");

DataSource ds=ctx.getBean("dataSource",DataSource.class);

Connection conn=ds.getConnection();

PreparedStatement pstmt=conn.prepareStatement("insert into news values(?,?)");

pstmt.setInt(1, 12);

pstmt.setString(2, "tan");

pstmt.executeUpdate();

if(pstmt!=null) pstmt.close();

if(conn!=null) conn.close();

}

}

测试查看数据库。

数据库的脚本：

create database news ；use news ；create table news(id int(10),name varchar(20));