在对接 微博 广告时，微博给出的代码示例是PHP版本的，没有 java 版本，因此对接时有两个地方容易出问题，

1、视频分片上传

2、视频分片后MD5取值验证不通过。

查询当前网站没有提供相应的参考内容。

注意事项：如果不分片时，初始化接口的MD5值需要和分片MD5值相同。

下面将自己对接时的源码分享出来供大家参考。

 视频上传核心代码：

Map<String, Object> initParamsMap = initToken();
        AdxCreativeListInfo creativeListInfo = creativeListInfoList.get(0);
        initParamsMap.put(WeiboConstants.VideoUpload.NAME, creativeListInfo.getCname());
        initParamsMap.put(WeiboConstants.VideoUpload. CHECK , creativeListInfo.getfMd5());
        Integer size = creativeListInfo.getSize();
        initParamsMap.put(WeiboConstants.VideoUpload.LENGTH, size);
        try {
            log.info("上传视频-初始化接口,请求参数。");
            JSONObject initRetJo = CommonHttpUtil.postJsonResponseObject(weiboConfig.getVideoUploadInitUrl(), initParamsMap);
            if (!RetCodeEnum.checkSuccess(initRetJo.getInteger(WeiboConstants.RET_CODE))) {
                log.error("上传视频-初始化接口，返回报错。retMst={}", initRetJo.getString(WeiboConstants.RET_MSG));
                return;
            }
            JSONObject initMsg = initRetJo.getJSONObject(WeiboConstants.RET_MSG);
            String uploadId = initMsg.getString(WeiboConstants.VideoUpload.UPLOAD_ID);
            Integer length = initMsg.getInteger(WeiboConstants.VideoUpload.LENGTH);
             file  file = new File(tempFilePath + "upload_video/" + creativeListInfo.getCampaignId() + "_" + creativeListInfo.getCname());
             inputStream  inputStream = new URL(creativeListInfo.getValue()).openStream();
            String weiboUrl = StringUtils.EMPTY;
             byte  uploadStatus = null;
            try {
                //计算文件分片数
                int count = size % length > 0 ? size / length + 1 : size / length;
                //获取文件
                FileUtils.copyInputStreamToFile(inputStream, file);
                Map<String, Object> uploadParamsMap = initToken();
                uploadParamsMap.put(WeiboConstants.VideoUpload.UPLOAD_ID, uploadId);
                uploadParamsMap.put(WeiboConstants.VideoUpload.LENGTH, length);
                uploadParamsMap.put(WeiboConstants.VideoUpload.FILE_LENGTH, size);
                uploadParamsMap.put(WeiboConstants.VideoUpload.CHECK, creativeListInfo.getfMd5());
                for (int i = 0; i < count; i++) {
                    uploadParamsMap.put(WeiboConstants.VideoUpload.PART_NUMBER, i);
                    byte[]  block  = CommonFileUtils.getBlock(file, i, length);
                    uploadParamsMap.put(WeiboConstants.VideoUpload.CONTENT, Base64.getEncoder().encodeToString(block));
                    uploadParamsMap.put(WeiboConstants.VideoUpload.SLICE_CHECK, MD5Utils.phpMd5(block));
                    log.info("上传视频-调用上传接口,请求参数。");
                    JSONObject uploadRetJo = CommonHttpUtil.postJsonResponseObject(weiboConfig.getVideoUploadUrl(), uploadParamsMap);
                    Integer errCode = uploadRetJo.getInteger(WeiboConstants.ERR_CODE);
                    if (!RetCodeEnum.checkSuccess(uploadRetJo.getInteger(WeiboConstants.RET_CODE)) || 0 != errCode) {
                        log.error("上传视频-调用上传接口,上传错误。erroCode={}[{}],retMsg={}", errCode, errCodeMap.get(String.valueOf(errCode)), uploadRetJo.getString(WeiboConstants.RET_MSG));
                        uploadStatus = UploadStatusEnum.Failed_Upload.getStatus();
                        break;
                    }
                    JSONObject uploadMsg = uploadRetJo.getJSONObject(WeiboConstants.RET_MSG);
                    weiboUrl = uploadMsg.getString(WeiboConstants.VideoUpload.URL);
                    uploadStatus = UploadStatusEnum.Success_Upload.getStatus();
                }

                AdxAppWeiboVideo update = new AdxAppWeiboVideo();
                update.setId(video.getId());
                update.setVideoUrl(weiboUrl);
                update.setUploadStatus(uploadStatus);
                update.setUploadDate(new Date());
                adxAppWeiboVideoService.updateBySelective(update);
            } catch (Exception e) {
                log.error("上传视频-调用上传接口，异常", e);
            } finally {
                file.delete();
                inputStream. close ();
            }

        } catch (Exception e) {
            log.error("上传视频-初始化接口，报错", e);
        }  

其中参考封装方法

1、视频分片

 byte[] block = CommonFileUtils.getBlock(file, i, length);  

 /**
     * 获取分块文件数组
     *
     * @param file      文件
     * @param offset    起始偏移量
     * @param blockSize 分块大小
     * @return
     */
    public static byte[] getBlock(File file, long offset, int blockSize) {
        byte[] result = new byte[blockSize];
        RandomAccessFile accessFile = null;
        try {
            accessFile = new RandomAccessFile(file, "r");
            accessFile.seek(offset * blockSize);
            int readSize = accessFile.read(result);
            if (readSize == -1) {
                return null;
            } else if (readSize == blockSize) {
                return result;
            } else {
                byte[] tmpByte = new byte[readSize];
                System.arraycopy(result, 0, tmpByte, 0, readSize);
                return tmpByte;
            }

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (accessFile != null) {
                try {
                    accessFile.close();
                } catch (IOException e1) {

                }

            }

        }
        return null;
    }  

2、 md5加密

 MD5Utils.phpMd5(block)  

 /**
     * @param input 输入
     * @return 返回16个字节
     * @throws Exception
     */
    public static String phpMd5(byte[] input) throws Exception {
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        md5.update(input);
        /** 获取加密后的字节数组 */
        byte[] md5Bytes = md5.digest();
        String res = "";
        for (int i = 0; i < md5Bytes.length; i++){
            int temp = md5Bytes[i] & 0xFF;
            // 转化成十六进制不够两位，前面加零
            if (temp <= 0XF){
                res += "0";
            }
            res += Integer.toHexString(temp);
        }
        return res;
    }