Java字符串复制

Java字符串复制

    public boolean topicFilterMatch(String topicFilter, String topic) {
        if (topicFilter == null || topic == null) {
            return false;
        }

        if (topicFilter.startsWith("$queue/"))
            topicFilter = topicFilter.substring(7);
        if (topicFilter.startsWith("$share/")) {
            int index = topicFilter.indexOf("/", 7);
            topicFilter = topicFilter.substring(index + 1);
        }

        String[] filterTokens = topicFilter.split("/");
        String[] topicTokens = topic.split("/");
        if (filterTokens.length > topicTokens.length) {
            return false;
        }

        for (int i = 0; i < filterTokens.length; i++) {
            if (filterTokens[i].equals("#")) {
                // '#' must be the last character
                return ((i + 1) == filterTokens.length);
            }

            if (!(filterTokens[i].equals(topicTokens[i]) || filterTokens[i].equals("+"))) {
                return false;
            }
        }

        return (filterTokens.length == topicTokens.length);
    }