使用spring 如何配置数据源?
测试如下
<?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-4.0.xsd"> <!-- 导入属性文件 --> <context:property-placeholder location="classpath:db.properties"/> <!-- 如果你的db.properties 是放在其他文件夹下,引用如下格式 --> <!-- <context:property-placeholder location="classpath:com/spring/entity/db.properties"/> --> <!-- 配置数据源 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="user" value="${uesr}"></property> <property name="password" value="${password}"></property> <property name="driverClass" value="${driverClass}"></property> <property name="jdbcUrl" value="${jdbcUrl}"></property> </bean> </beans>
3.db.properties 配置文件
这里用的是oracle 数据库
uesr=zt // 数据库用户名 password=zt // 数据库密码 driverClass=oracle.jdbc.OracleDriver jdbcUrl=jdbc:oracle:thin:@localhost:1521:xe
4. 需要导入的jar包
5.测试配置是否正确
package com.spring.test; import java.sql.SQLException; import javax.sql.DataSource; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class TestSource { public static void main(String[] args) throws SQLException { ApplicationContext ctx = new ClassPathXmlApplicationContext("datasource.xml"); DataSource source = (DataSource) ctx.getBean("dataSource"); System.out.println(source.getConnection()); } }
结果:com.mchange.v2.c3p0.impl.NewProxyConnection@2f0a87b3
说明配置正确。