public static void main(String[] args) {
        String str = "DYNFLIGHT#A###2012/07/02 14:42:54#START#186###";
        Pattern pattern = Pattern.compile("#");
        Matcher matcher = pattern.matcher(str);
        List<String> list = new ArrayList<String>();
        int startIndex = 0;
        while(matcher.find()){
            int endIndex = matcher.start();
            //这里可以判断str.substring(startIndex, endIndex).length() == 0替换成null
            list.add(str.substring(startIndex, endIndex));
            startIndex = endIndex + 1;
        }
        for(String s : list){
            System.out.print(s +",");
        }
    }