step 1：导入德鲁伊jar包，配置jdbc.properties

pros.driverClass=com.mysql.cj.jdbc.Driver
pros.url=jdbc:mysql://localhost:3306/test?serverTimezone=Asia/Shanghai
pros.userName=root
pros.password=83853649jkl

step2 ：配置spring bean.xml文件

在bean.xml文件头中加入，具体参考bean.xml文件

• xmlns:context="http://www.springframework.org/schema/context"
  

• http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context.xsd
  

  ---

  bean.xml文件

<?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">
<!--引入外部属性标签-->
    <context:property-placeholder location="classpath:jdbc.properties" />
<!--    配置连接池-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${props.driverClass}"></property>
        <property name="url" value="${props.url}"></property>
        <property name="username" value="${props.username}"></property>
        <property name="password" value="${props.password}"></property>
    </bean>
</beans>