字符串处理--过滤

public static String splitAndFilterString(String input, int length) {   
        if (input == null || input.trim().equals("")) {   
            return "";   
         }   
        // 去掉所有html元素,   
         String str = input.replaceAll("\\&[a-zA-Z]{1,10};", "").replaceAll(   
                "<[^>]*>", "");   
         str = str.replaceAll("[(/>)<]", "");   
        int len = str.length();   
        if (len <= length) {   
            return str;   
         } else {   
             str = str.substring(0, length);   
             str += "......";   
         }   
        return str;   
     }