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);
     }