util文件 连接数据库用到的

Posted 2022-12-07 池鱼i_

package cn.hp.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class ConnDemo 
	private static String Driver ="com.mysql.jdbc.Driver";
	private static String Url = "jdbc:mysql://localhost:3306/provices?//characterEncoding=utf8";//更改此处的数据库即可
	private static String user ="root";
	private static String pwd ="123456";
	public static Connection conn;

	public static Connection getConn() 
		try 
			Class.forName(Driver);
			conn = DriverManager.getConnection(Url, user, pwd);
		 catch (Exception e) 
			// TODO Auto-generated catch block
			e.printStackTrace();
		
		return conn;
	


	public static void getClose() 
		try 
			if (conn != null) 
				conn.close();
			
		 catch (SQLException e) 
			// TODO Auto-generated catch block
			e.printStackTrace();
		
	

	// �������ݿ�����
	public static void main(String[] args) 
		System.out.println(getConn());
		if (getConn()!=null) 
			System.out.println("���ӳɹ�");