Mybatis配置c3p0出现org.apache.ibatis.datasource.DataSourceException: Unknown DataSource property 一个可能的原因

问题
使用mybatis配置c3p0时，运行出现：

Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.datasource.DataSourceException: Unknown DataSource property: url
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:120)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:98)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78)
… 53 more

一个可能的原因
在使用pooled数据源时和c3p0数据源时 property中driver，url，username名字不同

pooled

            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/mybatis?characterEncoding=UTF-8"/>
                <property name="username" value="root"/>
                <property name="password" value="admin"/>
            dataSource>

c3p0

			<dataSource type="c3p0.C3P0DataSourceFactory">
                <property name="driverClass" value="com.mysql.jdbc.Driver"/>
                <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/mybatis?characterEncoding=UTF-8"/>
                <property name="user" value="root"/>
                <property name="password" value="admin"/>
            dataSource>