正则表达式获取cookie值

/**
	 * 获取cookie的值
	 * @param cookies
	 * 类似这样的字符串：
	 * 	c=1;b=12;a=123
	 * @param key
	 * @return
	 */
	public static String getCookieValue(String cookies, String key) {
		Pattern pattern = Pattern.compile(key + "[\\s]*=[\\s]*([^;\\s]{1,})");
		Matcher matcher = pattern.matcher(cookies);
		if(matcher.find()){
			if(matcher.groupCount() == 1){
				return matcher.group(1);
			}
		}
		return null;
	}

public static void main(String[] args) {
		System.out.println(getCookieValue("c=1;b=12;a=123","b"));
		
		System.out.println(getCookieValue("c= 1 ; b= 12 ; a= 123","b"));
		
		System.out.println(getCookieValue("c= 1 ; b = 12 ; a= 123;;","a"));
		
		System.out.println(getCookieValue("c=bbbb;b=12;a=123","b"));
		
	}