JDBC登录案例改进

package cn.itcast.jdbc;

import cn.itcast.jdbc.util.JDBCUtils;

import java.sql.*;
import java.util.Scanner;
import java.util.function.Predicate;

public class JDBCDemo6 {
    public static void main(String[] args) throws SQLException {
        Scanner sc=new Scanner(System.in);
        System.out.println("请输入用户名：");
        String name = sc.nextLine();
        System.out.println("请输入密码：");
        String password=sc.nextLine();
        boolean flag = login(name, password);
        if (flag){
            System.out.println("登录成功");
        }else {
            System.out.println("登录失败");
        }

    }
    //通过键盘录入用户名和密码
    //判断用户名是否登录成功
    public static boolean login(String name,String password) throws SQLException {
        Connection conn = null;
        PreparedStatement pstmt = null;
        ResultSet rs = null;
        if (name == null || password == null) {
            return false;
        }
        try {
            conn = JDBCUtils.getConnection();
            String sql = "select *from user where name = ?and password = ?";
            pstmt = conn.prepareStatement(sql);
            pstmt.setString(1,name);
            pstmt.setString(2,password);
            rs = pstmt.executeQuery();
            return rs.next();
        } catch (SQLException e) {
            e.printStackTrace();
        }finally {
            JDBCUtils.close(rs,pstmt,conn);
        }
        return false;
    }
}