数据库的连接与关闭

package util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class JdbcUtils {

	public static Connection getConnection() {
	    //1.注册驱动
	    try {
			Class.forName("com.mysql.cj.jdbc.Driver");
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	    //2.获取连接
	    String url = "jdbc:mysql://localhost:3306/webtest?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=UTC";
	    String user="root";
	    String password = "000000";
	    Connection conn = null;
	    
		try {
			conn = DriverManager.getConnection(url,user,password);
			return conn;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return conn;
	    
	}
	public static void close(Connection con,Statement st,ResultSet rs) {
		try{
			con.close();
			st.close();
			rs.close();
			
		}catch(Exception e) {
			e.printStackTrace();
		}
		}
		public static void close(Connection con,PreparedStatement ps) {
			try{
				con.close();
				
				ps.close();
			}catch(Exception e) {
				e.printStackTrace();
			}
		
	}
}