代码]spring 的配置文件
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<?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:context=
"http://www.springframework.org/schema/context"
xsi:schemaLocation=
"http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"
>
<!-- 配置数据源的位置 dbcp.properties -->
<context:property-placeholder location=
"classpath:dbcp.properties"
/>
<!-- 配置数据源的基本信息-->
<bean id=
"dataSource"
class
=
"org.apache.commons.dbcp.BasicDataSource"
>
<property name=
"username"
value=
"${jdbc.username}"
></property>
<property name=
"password"
value=
"${jdbc.password}"
></property>
<property name=
"url"
value=
"${jdbc.url}"
></property>
<property name =
"driverClassName"
value=
"${jdbc.driverClass}"
</property>
<property name=
"initialSize"
value=
"${jdbc.initialSize}"
></property>
<property name=
"maxActive"
value=
"${jdbc.maxActive}"
></property>
</bean>
<!-- 导入外部的资源文件 c3p0.properties-->
<context:property-placeholder location=
"classpath:c3p0.properties"
/>
<!-- 配置数据源 -->
<bean id=
"dataSource1"
class
=
"com.mchange.v2.c3p0.ComboPooledDataSource"
>
<property name=
"user"
value=
"${jdbc.user}"
></property>
<property name=
"password"
value=
"${jdbc.password}"
></property>
<property name=
"driverClass"
value=
"${jdbc.driverClass}"
></property>
<property name=
"jdbcUrl"
value=
"${jdbc.jdbcUrl}"
></property>
<property name=
"initialPoolSize"
value=
"${jdbc.initPoolSize}"
> </property>
<property name=
"maxPoolSize"
value=
"${jdbc.maxPoolSize}"
></property>
</bean>
</beans>
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2. [代码]dbcp和c3p0的配置文件配置
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dbcp.properties的配置：
jdbc.user=root
jdbc.password=
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql:
//localhost:3306/test
jdbc.initPoolSize=
5
jdbc.maxPoolSize=
10
c3p0.properties 的配置：
jdbc.username=root
jdbc.password=
jdbc.driverClass=org.gjt.mm.mysql.Driver
jdbc.url=jdbc:mysql:
//localhost:3306/test
jdbc.initialSize=
5
jdbc.maxActive=
10
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3. [代码]定义测试类 跳至 [1] [2] [3] [全屏预览]
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package
com.xiaomo.spring.jdbc;
import
javax.sql.DataSource;
import
org.springframework.context.ApplicationContext;
import
org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* 测试dbcp的数据源连接是否成功
*/
public
class
Test {
public
static
void
main(String[] args) {
ApplicationContext ctx =
new
ClassPathXmlApplicationContext(
"dbcp.xml"
);
DataSource dataSource = ctx.getBean(DataSource.
class
);
System.out.println(dataSource);
}
}
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