mysql5：
mysql8：
db.properties
1 jdbc.driver=com.mysql.cj.jdbc.Driver 2 jdbc.url=jdbc:mysql://localhost:3306/e3mall?characterEncoding=utf-8&serverTimezone=GMT%2B8 3 #jdbc.url=jdbc:mysql://localhost:3306/e3mall?serverTimezone=GMT%2B8 4 jdbc.username=hmcxy 5 jdbc.password=123456
applicationContext-dao.xml
1 <!-- 加载配置文件 --> 2 <context:property-placeholder location="classpath:conf/db.properties" /> 3 <!-- 数据库连接池 --> 4 <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close"> 5 <property name="url" value="${jdbc.url}" /> 6 <property name="username" value="${jdbc.username}" /> 7 <property name="password" value="${jdbc.password}" /> 8 <property name="driverClassName" value="${jdbc.driver}" /> 9 <property name="maxActive" value="10" /> 10 <property name="minIdle" value="5" /> 11 </bean>