如何将群里的文件发送到另外一个群

[bigcyy]

我通过群消息事件然后获取到了fileMessage，但是试了直接发送到目标群无法实现

[bigcyy]

@bigcyy
研究出来了，贴这里供大家参考，我这里是mirai最新的稳定版

//判断其是否是文件信息
           boolean isFileMsg = message.stream().anyMatch((singleMessage) -> singleMessage instanceof FileMessage);
           if (isFileMsg) { //如果是文件
               Optional<SingleMessage> first = message.stream().filter((singleMessage) -> singleMessage instanceof FileMessage).findFirst();
               SingleMessage singleMessage;
               if(first.isPresent()) {
                   singleMessage = first.get();

                   AbsoluteFile absoluteFile = ((FileMessage) singleMessage).toAbsoluteFile(group);    //从刚刚发送文件的的群里获取该文件
                   String fileName = absoluteFile.getName();
                   String url = absoluteFile.getUrl(); //得到url
                   OkHttpClient okHttpClient = new OkHttpClient(); //用okhttp发送请求，转成流
                   Request request = new Request.Builder().url(url).build();
                   okHttpClient.newCall(request).enqueue(new Callback() {
                       @Override
                       public void onFailure(@NotNull Call call, @NotNull IOException e) {
                           e.printStackTrace();
                       }

                       @Override
                       public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
                           try {
                               InputStream inputStream = response.body().byteStream(); //转成流
                               ExternalResource res = ExternalResource.create(inputStream).toAutoCloseable();  //用mirai的ExternalResource包装
                               pushGroup.getFiles().uploadNewFile("/" + fileName, res);
                               inputStream.close();
                           } catch (Exception e) {
                               e.printStackTrace();
                           }
                       }
                   });
               }
           }

[wuxianggujun]

你有没有试过，游历群文件夹下的子文件夹