c3p0连接池的使用

 1 import java.sql.Connection;
 2  
 3 import com.mchange.v2.c3p0.ComboPooledDataSource;
 4  
 5 public class Demo {
 6      public static void main(String[] args) throws Exception {
 7           //硬编码使用c3p0连接池
 8           ComboPooledDataSource cpd = new ComboPooledDataSource();
 9           //配置参数
10           cpd.setDriverClass("com.mysql.jdbc.Driver");
11           cpd.setJdbcUrl("jdbc:mysql://localhost:3306/test");
12           cpd.setUser("root");
13           cpd.setPassword("root");
14  
15           Connection conn = cpd.getConnection();
16           System.out.println(conn);
17      }
18 }
19 //输出显示：
20 com.mchange.v2.c3p0.impl.NewProxyConnection@ed17bee

1 //简单配置文件
2 c3p0.driverClass=com.mysql.jdbc.Driver
3 c3p0.jdbcUrl=jdbc:mysql://localhost:3306/test
4 c3p0.user=root
5 c3p0.password=root

 1 //测试代码：
 2 package day9_01.c3p0_test;
 3  
 4 import java.sql.Connection;
 5  
 6 import com.mchange.v2.c3p0.ComboPooledDataSource;
 7  
 8 public class C3p0Demo {
 9      public static void main(String[] args) throws Exception {
10           //将配置文件放在src目录下
11           //一句话获取链接
12           ComboPooledDataSource cpd = new ComboPooledDataSource();
13           Connection conn = cpd.getConnection();
14           System.out.println(conn);
15      }
16 }