数据库连接

数据库连接与断开:Connection conn=Jdbcutil.open();

                 Jdbcutil.close(conn);

package 数据库.连接;

import java.sql.*;

public class Jdbcutil {

private static String driver;

private static String url;

private static String userName;

private static String passWord;

static{

driver="com.mysql.jdbc.Driver";

url="jdbc:mysql://localhost:3306/网页数据";

userName="root";

passWord="123";

}

public static Connection open(){

try {

Class.forName(driver);

return  DriverManager.getConnection(url,userName,passWord);

} catch (Exception e) {

// TODO 自动生成的 catch 块

e.printStackTrace();

return null;

public static void close(Connection conn){

if(conn!=null){

conn.close();

} catch (SQLException e) {