jdbc的登录案例

要求：从数据库中查询是否含有登录的信息，有则登录成功，否则登录失败

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

//用户登录案例
public class JDBCdemo7 {
    public static void main(String[] args) {
        if (login("郭奉孝", 38)){
            System.out.println("登录成功");
        }else {
            System.out.println("登录失败");
        }
    }

    public static boolean login(String name,int age){
        if (name == null || age == 0){
            return false;
        }
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;
        try {
            connection = JDBCUntils.getConnection();
            statement = connection.createStatement();
            String sql = "select * from student where name = '"+name+"' and age = "+age;
            resultSet = statement.executeQuery(sql);
            return resultSet.next();
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }finally {
            JDBCUntils.close(connection,statement,resultSet);
        }

        return false;
    }
}