druid database connection pool

driverClassName = com.mysql.jdbc.Driver 
URL = JDBC: MySQL: //127.0.0.1: 3306 / eStore 
username = the root 
password = 123 
# initial connection number 
initialSize = . 5 
# maximum number of connections 
for maxActive = 10 
# maximum connection time 
maxWait = 3000

cn.itcast.datasource.druid Package ; 

Import com.alibaba.druid.pool.DruidDataSource ; 
Import com.alibaba.druid.pool.DruidDataSourceFactory ; 

Import the javax.sql.DataSource ; 
Import the java.io. * ; 
Import the java.sql. Connection ; 
Import the java.util.Properties ; 

/ ** 
* @author newcityman 
* @date 2019/8/16 - 23:29 
* / 
public class DruidDemo { 
 public static void main (String [] args) { 
 the try { 
//. 1 introducing jar package 
@ 2, defined profile 
// 3, load the configuration files 
the Properties prop = new new the Properties () ;
 InputStream is = DruidDemo.class.getClassLoader().getResourceAsStream("druid.properties");
 prop.load(is);
// 4、获取连接对象
 DataSource dataSource = DruidDataSourceFactory.createDataSource(prop);
// 5、获取连接
 Connection conn = dataSource.getConnection();
// System.out.println(conn);
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
}