import java.sql.SQLException;

import org.apache.commons.dbcp2.BasicDataSource;

public class TestDbcp {

public static void main(String[] args) {
// TODO Auto-generated method stub
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName("com.mysql.jdbc.Driver");
dataSource.setUrl("jdbc:mysql://localhost:3306/demo");
dataSource.setUsername("root");
dataSource.setPassword("0524");
dataSource.setMaxActive(10);
dataSource.setInitialSize(2);
Connection conn=null;
for(int i=0;i<15;i++){
try{
conn=dataSource.getConnection();
System.out.println("connection"+i+":"+conn.hashCode());
}catch(SQLException e){
e.printStackTrace();
}
}
}

}