code: public static String getFileName(TaskResponse response){
          List<String> name = response.header("content-disposition");
          System.out.println(name);
          if (null != name) {
              return Arrays.stream(name.get(0).split("; ")).filter(item -> {
                  return item.trim().startsWith("filename=\"");
              }).map(filename -> {
                  return filename.replaceAll("filename=","").replaceAll("\"","");
              }).limit(1).collect(Collectors.toList()).get(0);
          }
          return null;
      }
docs: 获取文件名称
  @param response
  @return