c3p0连接mysql8.0.11配置问题

配置好了数据库版本后，出了各种问题，一步一步解决

1.更新老版本的JAR包，新的如下：

c3p0-0.9.5.2
mchange-commons-java-0.2.15
mysql-connector-java-8.0.11

下载地址：

https://download.csdn.net/download/qq_38815856/10524564

2.配置C3P0-config.xml中

实例如下：

<?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/database?useSSL=false&amp;serverTimezone=Hongkong&amp;characterEncoding=utf-8&amp;autoReconnect=true</property>
        <property name="user">root</property>
        <property name="password">123123123123</property>
        <property name="initialPoolSize">10</property>
        <property name="minPoolSize">10</property>
        <property name="maxPoolSize">20</property>
    </default-config>

	<named-config name="itcast">
		<property name="driverClass">com.mysql.jdbc.Driver</property>
		<property name="jdbcUrl">
           	jdbc:mysql://localhost:3306/database
        </property>
		<property name="user">root</property>
		<property name="password">123123123123</property>
		<property name="initialPoolSize">5</property>
		<property name="maxPoolSize">15</property>
	</named-config>
</c3p0-config>

改完收工！