package cn.itcast.datasource;import java.beans.PropertyVetoException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;import org.junit.Test;import com.mchange.v2.c3p0.ComboPooledDataSource;public class C3p0Test {//手动
    @Testpublic void test1() throws PropertyVetoException, SQLException{ComboPooledDataSource cpds = new ComboPooledDataSource();cpds.setDriverClass("com.mysql.jdbc.driver");cpds.setJdbcUrl("jdbc:mysql:///day18");cpds.setUser("root");cpds.setPassword("");//得到一个ConnectionConnection con = cpds.getConnection();ResultSet rs= con.createStatement().executeQuery("select * from account");while(rs.next()){System.out.println(rs.getInt("id")+"   "+rs.getString("name"));}rs.close();con.close();//将Connection对象重新装入到连接池.
    }@Testpublic void test2() throws SQLException{ComboPooledDataSource cpds = new ComboPooledDataSource();//得到一个ConnectionConnection con = cpds.getConnection();ResultSet rs= con.createStatement().executeQuery("select * from account");while(rs.next()){System.out.println(rs.getInt("id")+"   "+rs.getString("name"));}rs.close();con.close();//将Connection对象重新装入到连接池.
    String path= this.getClass().getResource("/").getPath();System.out.println(path);//你在搜索时肯定能找到这个路径嘛 c3p0的底层直接找classpath路径 然后去找指定名称文件  名称是固定的
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<c3p0-config><default-config><property name="driverClass">com.mysql.jdbc.Driver</property><property name="jdbcUrl">jdbc:mysql:///day18</property><property name="user">root</property><property name="password"></property></default-config></c3p0-config>