private String keySegment(){
      skipBlank();
      // 略过双引号
      char quato = source.charAt(position++);
      for(; position < source.length(); position++){
        char temp = source.charAt(position);
        if(temp < 32) continue;
        if(temp == '\\' && esacpe && position + 1 < source.length()){
          container.append(source.charAt(++position));
          continue;
        }
        if(temp == quato || temp == '}') break;

        container.append(temp);
      }

      return getContent();
    }