CookieUtil

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/**
 * cookie处理器
 * 
 * @author chenxin
 * @version [版本号, 2012-5-21]
 * @see [相关类/方法]
 * @since [产品/模块版本]
 */
public class CookieUtil {

	/**
	 * 添加cookie
	 * 
	 * @param response
	 * @param name Cookie的名称，不能为null
	 * @param value Cookie的值，默认值空字符串
	 * @param maxAge
	 * @param path 默认值'/'
	 */
	public static void addCookie(HttpServletResponse response, String name, String value, Integer maxAge, String path) {
		if (value == null) {
			value = "";
		}
		if (path == null) {
			path = "/";
		}

		Cookie cookie = new Cookie(name, value);
		cookie.setPath(path);
		if (maxAge != null) {
			cookie.setMaxAge(maxAge);
		}

		response.addCookie(cookie);
	}

	/**
	 * @param request
	 * @param cookieName
	 * @return 指定的cookie
	 */
	public static Cookie getCookie(HttpServletRequest request, String cookieName) {
		Cookie[] cookies = request.getCookies();
		if (cookies == null) {
			return null;
		}

		for (Cookie c : cookies) {
			if (c.getName().equals(cookieName)) {
				return c;
			}
		}

		return null;
	}


    //登录时将用户名密码放入cookie
		Cookie loginNameCookie = new Cookie("myLoginName", salesman.getLoginName());
		loginNameCookie.setMaxAge(14*24*60*60);//2周内自动登录
		response.addCookie(loginNameCookie);

		Cookie pwdCookie = new Cookie("myLoginPwd",CryptTool.encryptToMD5(password) );
		pwdCookie.setMaxAge(14*24*60*60);//2周内自动登录
		response.addCookie(pwdCookie);

    //从cookie中取出用户名和密码
		Cookie cookies[] = request.getCookies();
		Cookie   sCookie=null;   
		String   loginNameValue=null;   
		String   pwdValue=null;
		if (cookies!=null&&cookies.length>0) {
			for (Cookie cookie : cookies) {
				sCookie = cookie;
				if ("myLoginName".equals(sCookie.getName())) {
					loginNameValue = sCookie.getValue();
				}
				if ("myLoginPwd".equals(sCookie.getName())) {
					pwdValue = sCookie.getValue();
				}
			}
		}



}