ATM系统实现[15]——身份验证类[00原创]

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package cn.edu.ynu.sei.atm.loginProcess;

import cn.edu.ynu.sei.atm.interfaceDef.IVerification;
import cn.edu.ynu.sei.atm.sqlManager.SqlStatementsManager;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;

/**
* 验证用户身份，主要是对用户名和口令的匹配验证
* @author 88250
*/
public class Verification extends UnicastRemoteObject implements IVerification
{
    /**
     * SQL语句管理对象
     */
    SqlStatementsManager sqlSM = SqlStatementsManager.getInstance();

    /**
     * 密码长度限制
     */
    private final int pwdLengthLimit = 8;

    /*
     * (non-Javadoc)
     * @see cn.edu.ynu.sei.atm.interfaceDef.IVerification#verify(java.lang.String, java.lang.String)
     */

    /**
     * 创建一个身份验证实例
     * @throws RemoteException
     */
    public Verification() throws RemoteException
    {
    super();
    }

    /* (non-Javadoc)
     * @see cn.edu.ynu.sei.atm.interfaceDef.IVerification#getPwdLength()
     */
    public int getPwdLength()
    {
    return pwdLengthLimit;
    }

    /*
     * (non-Javadoc)
     * @see cn.edu.ynu.sei.atm.interfaceDef.IVerification#verify(java.lang.String, java.lang.String)
     */
    public boolean verify(String cardID, String pwd)
    {
    if (pwd.equals(sqlSM.getPassword(cardID)))
    {
        return true;
    }
    else
    {
        return false;
    }
    }

    /*
     * (non-Javadoc)
     * @see cn.edu.ynu.sei.atm.interfaceDef.IVerification#changePwd(java.lang.String, java.lang.String)
     */
    public void changePwd(String cardID, String newPwd)
    {
    sqlSM.updatePwd(cardID, newPwd);
    }
}