IDEA 的话， 记住一定要放在 resource 文件夹下，才能识别到！！！
<?xml version="1.0" encoding="UTF-8"?>
<c3p0-config>
<default-config>
<property name="driverClass">com.mysql.cj.jdbc.Driver</property>
<property name="jdbcUrl">jdbc:mysql://localhost:3306/shop?&serverTimezone=UTC</property>
<property name="user">root</property>
<property name="password">Lsm,506</property>
</default-config>
</c3p0-config>
