连接测试
@Test
public void test5() throws SQLException {
//从容器中获取datasource对象
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
DruidDataSource dataSource = applicationContext.getBean(DruidDataSource.class);
DruidPooledConnection connection = dataSource.getConnection();
System.out.println(connection);
connection.close();
}
jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/db1
jdbc.username=root
jdbc.password=root
applicationContext.xml
<?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.xsd
">
<!-- <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">-->
<!-- <property name="driverClassName" value="com.mysql.jdbc.Driver"/>-->
<!-- <property name="url" value="jdbc:mysql:///db1"/>-->
<!-- <property name="username" value="root"/>-->
<!-- <property name="password" value="root"/>-->
<!-- </bean>-->
<!-- 加载配置文件-->
<!-- 先配置context的命名空间，使用spring表达式-->
<context:property-placeholder location="jdbc.properties"/>
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
</beans>
原文：https://www.cnblogs.com/codegzy/p/14786620.html
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