jdbc数据连接

package com.until;import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException;public class DbUtil {  //获得数据库连接  public Connection getCon() throws Exception{ Class.forName(PropertiesUtil.getValue("jdbcName")); Connection con=DriverManager.getConnection(PropertiesUtil.getValue("dbUrl"), PropertiesUtil.getValue("dbUserName"),PropertiesUtil.getValue("dbPassword"));return con;    }  //关闭连接  public void closeCon(Connection con) throws Exception{  if(con!=null){  con.close();  }  }  //测试  public static void main(String[] args) {DbUtil dbUtil=new DbUtil();try {dbUtil.getCon();System.out.println("数据库连接成功");} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();System.out.println("数据库连接失败");}}}