loginservice.java

只做是单选题！数据库表有三张：EUser,EItem,Score

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package com.exam.model;

import java.sql.SQLException;
import javax.ejb.ObjectNotFoundException;
import javax.servlet.http.HttpServlet;

/**
 *
 * @author fyadmin
 */
public class LoginService extends HttpServlet {

    private UserDAO leagueDataAccess;

    /**
     * This constructor creates a League Service object.
     */
    public LoginService() {
        leagueDataAccess = new UserDAO();
    }

    /**
     * This method returns a complete set of leagues.
     */
    public User getRetriver(String username, String password) throws SQLException, ObjectNotFoundException {
        return leagueDataAccess.retrieve(username, password);
    }
    /**
     * This method finds the specified League object in the database.
     */
}