userdirectory.java

基于JAVA的一个注册系统 最初只是为了公司做演示使用

package registerapp;

import java.io.IOException;
import java.io.InputStream;
import java.io.FileOutputStream;
import java.util.*;
import java.net.URL;
import net.yefei.cmn.user.*;

/*
* @author ye fei
* @version 1.00, 2003/04/15
* @copyright www.studyjava.com
*/
public class UserDirectory  {

    private User user=null;

    /**
     *It a static vector, all user info in it.
     */
    private static Vector alluserinfo=null;


    /**
     *
     */
    private static User userin=null;


    /**
     *User Data object.
     */
    private static UserData userdata=null;


    /**
     *UserDirectory construction
     */
    public UserDirectory() throws UserDirectoryException {
      try{
            userin=new User();
            alluserinfo= userin.ListUserInfo();
      }
      catch (Exception e) {
           throw new UserDirectoryException();
      }
    }


    /**
     * Transform id so that it will match any conventions used by user
     * directory. The default implementation forces the id to
     * uppercase. Does <b>not</b> expect the userId to be null and
     * will throw a NPE if it is.
     *
     * @exception Throws Null Pointer Exception if userId is null.
     */
    public String fixId(String userId) {
       return userId.toUpperCase();
    }


    /**
     *Check the Password,if Password is Valid return true
     */
    public boolean isValidPassword(String userId, String password) {

            // no null passwords
        if (null==password) return false;

            // conform userId to uppercase
        String _userId = userId;

            // no passwords for non-users
        if (!isUserExist(_userId)) return false;

            // does password match user's password
        return (password.equals(getPassword(password)));

    }

    /**
     *Check the Admin,if it an admin return true
     */
    public boolean isAdmin(String userId, String password) {

                // no null passwords
            if (null==password ||userId==null) return false;
            if (userId.equalsIgnoreCase("admin"))
            if (password.equalsIgnoreCase("admin"))
              return true;
              return false;
        }

    /**
     *Check the user,if user exist return true
     */
    public boolean isUserExist(String userId) {

            // no null users
        if (null==userId) return false;
        Enumeration enu=alluserinfo.elements();
              while (enu.hasMoreElements())
              {
                UserData userdata = (UserData) enu.nextElement();
                // if not null, it's a user
               if (userdata.getUserName().equalsIgnoreCase(userId))
                return true;
              }
        return false;
    }


    /**
     * get Password
     */
    public String getPassword(String userId)  {
      Enumeration enu=alluserinfo.elements();
      String pass=null;
      while (enu.hasMoreElements())
      {
        UserData userdata = (UserData) enu.nextElement();
        if (userdata.getPassword().equalsIgnoreCase(userId))
        pass= userdata.getPassword();
      }
      return pass;
    }


    /**
     *get User Ids
     */
    public Enumeration getUserIds()  {
       return alluserinfo.elements();
    }


    /**
     *setUser(username,password1,UserSex,Email);
     */
    public void setUser(String password,String UserName, String UserSex,String Email) throws
            UserDirectoryException {
        // no nulls
        if ((null==UserName) || (null==password)) {
            throw new UserDirectoryException();
        }

        try {
            userin.InsertUserInfo(password,UserName,UserSex,Email);
            /* conform userId to uppercase when stored
            p.put(fixId(userId), password);
            String o = this.getClass().getClassLoader().getResource(UserDirectoryFile).getFile();
            p.store(new FileOutputStream(o), UserDirectoryHeader);*/
            System.out.println("Succeed Insert User Info!!!");
        }
        catch (Exception e) {
            throw new UserDirectoryException();

       }
    }

} // end UserDirectory