users.java

一个用struts tiles的在线影院web系统

package com.eline.vod.security;

import java.util.Calendar;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import com.eline.vod.HttpContext;
import com.eline.vod.security.dao.DAOFactory;
import com.eline.vod.security.dao.UserDAO;
import com.eline.vod.security.model.CreateUserStatus;
import com.eline.vod.security.model.User;
import com.eline.vod.utils.caching.Cache;

public class Users {

	public static User getAnonymousUser(boolean formCache) {
		final String cacheKey = "MoviesWeb:AnonymousUser";
		User user = null;
		if (formCache) {
			user = (User) Cache.getInstance().get(cacheKey);
		}
		
		if (user == null) {
			try {
				user = DAOFactory.getUserDAO().getAnonymousUser();
			} catch (Exception e) {e.printStackTrace();}

			if (user != null && user.getUserName() != null && user.getUserId() > 0 && formCache) {
				Calendar cal = Calendar.getInstance();
				cal.setTime(new Date());
				cal.add(Calendar.HOUR, 5);

				Cache.getInstance().add(cacheKey, user, cal.getTime(), Cache.NoSlidingExpiration);	// five minutes
			}
		}
		return user;
	}

	/**
	 * Check out if provided name was previously disallowed.
	 * @param name
	 * @return
	 */public static boolean disallowedName(String name) {
		if (!name.equals(name.trim()))
			return false;	// username did not being with an alphabetic character.

		Pattern pattern = Pattern.compile("[a-zA-Z0-9_]*");
		Matcher matcher = pattern.matcher(name);
		if (matcher.matches())
			return false;
		else
			return true;
	}

	public static int create(User user, boolean sendEmail) {
		// Check if username is disallowed
		System.out.println("STEP:1");
		if (disallowedName(user.getUserName()))
			return CreateUserStatus.DisallowedUsername;

		User userInOut = user;
		int status = CreateUserStatus.UnknownFailure;

		System.out.println("STEP:2");
		try {
			UserDAO dao = DAOFactory.getUserDAO();
			status = dao.createUser(userInOut);
			System.out.println("STEP:3	status=" + status);

			if (userInOut != null || status == CreateUserStatus.Created) {
	
				// TODO: We should load default roles from database.
				String[] defaultRoles = { "Everyone", "Registered Users" };
				for (int i = 0; i < defaultRoles.length; i ++)
					Roles.addUserToRole(userInOut.getUserName(), defaultRoles[i]);
			}
		} catch (Exception e) {	e.printStackTrace();}

		// TODO: process the emails now
		return status;
	}
	
	public static User getUser(int userID, String username, boolean isOnline, boolean isCacheable) {
		User user = null;

		// If the request is not authenticated return
		// a new user instance
		//
		if ((userID == 0) && (username == "Anonymous")) {
			user = Users.getAnonymousUser(true);
			return user;
		}

		try {
			String lastAction = HttpContext.getCurrent().getRequest().getRequestURL().toString()
					+ "?" + HttpContext.getCurrent().getRequest().getQueryString();
			user = DAOFactory.getUserDAO().getUser(userID, username, isOnline, lastAction);
		} catch (Exception e) {
			e.printStackTrace();
		}

		if (user != null && user.getUserName() != null && user.getUserId() > 0 && isCacheable) {
			String userKey = "MoviesWeb:User_";
			if (userID > 0)
				userKey += "ID-" + userID;
			else
				userKey += "NAME-" + username;

			Calendar cal = Calendar.getInstance();
			cal.setTime(new Date());
			cal.add(Calendar.HOUR, 5);

			Cache.getInstance().add(userKey, user, cal.getTime(), Cache.NoSlidingExpiration);	// five minutes
		}
		return user;
	}

	/**
	 * Validates the User does not alrady exist
	 * 
	 * @param username
	 * @param password
	 * @return CreateUserStatus
	 * @throws Exception
	 */
	public static int validateNewUserExists(String username, String mobilePIN) throws Exception {
		// 是否非法用户名
		if (Users.disallowedName(username))
			return CreateUserStatus.DisallowedUsername;
		User user;
		// 是否已存在用户
		if ((user = Users.getUser(0, username, false, false)) != null)
			return CreateUserStatus.DuplicateUsername;
		// 手机号是否匹配
		if (mobilePIN != null) {
			user = DAOFactory.getUserDAO().getUserByMobilePIN(mobilePIN);
			if (user != null)
				return CreateUserStatus.DuplicateMobilePIN;
		}
		return CreateUserStatus.UnknownFailure;
	}
}