Spring DBCP用xml和properties2种格式配置DataSource

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Spring提供数据库连接池：DBCP配置DataSource并且获取连接完成数据库操作：

Spring帮助文档的地址：

http://static.springsource.org/spring/docs/2.5.6/reference/beans.html#beans-value-element

以下内容需要导入的jar包：

commons-dbcp.jar

commons-pool.jar

mysql-connector-java-5.0-nightly-20071116-bin.jar

1. 首先在容器内配置数据源

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<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/sms"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</bean>

2.拿到注入数据源并且编写对数据库的操作

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@Component("userService")
public class UserServiceImpl implements UserService{
private UserDao userDao;
public void setUserDao(UserDao userDao) {
this.userDao = userDao;
}
@Resource //resource注入
private DataSource myDataSource;
public DataSource getMyDataSource() {
return myDataSource;
}
public void setMyDataSource(DataSource myDataSource) {
this.myDataSource = myDataSource;
}
//在下面方法前面加逻辑
public void save(){
try{
//拿到连接执行操作
Connection conn = myDataSource.getConnection();
conn.createStatement().execute("insert into dept values('6','bumen2')");
}catch(Exception e){
e.printStackTrace();
}
}
}

3.测试运行

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@Test
public void test01() {
BeanFactory applicationContext = new ClassPathXmlApplicationContext(
"beans.xml");
UserService user = (UserService) applicationContext.getBean("userService");
user.save();
}

----------------------------------------------------------------------------------------------------------------------------------通过Properties的方式配置xml的datasource：

1、编写properties文件：

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