七牛java sdk文件上传，文件名没有有后缀

Question

七牛java sdk文件上传图片，文件名没有后缀,putRet接收的都是哈希值。查看七牛上传模板修改后为：
private static String upQiNiuFile(String localFilePath, String fileSpaceName){

    //构造一个带指定Zone对象的配置类
    Configuration cfg = new Configuration(Zone.zone1());
    UploadManager uploadManager = new UploadManager(cfg);
    //...生成上传凭证，然后准备上传
    String accessKey = QiNiuConTants.AK;
    String secretKey = QiNiuConTants.SK;
    String key = null;
    Auth auth = Auth.create(accessKey, secretKey);
    String upToken = auth.uploadToken(fileSpaceName);
    try {
        Response response = uploadManager.put(localFilePath, key, upToken);
        //解析上传成功的结果
        DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
        LOGGER.info("上传文件成功参数localFilePath:{}和fileSpaceName:{}返回结果", localFilePath, fileSpaceName, JSON.toJSONString(putRet));
        return QiNiuEnum.urlOf(fileSpaceName).getUrl() + putRet.key;
    } catch (QiniuException ex) {
        Response r = ex.response;
        LOGGER.error("上传文件参数localFilePath:{}和fileSpaceName:{},错误信息{}", localFilePath, fileSpaceName, ex);
        try {
            r.bodyString();
            throw new DoorException(ResultCodeEnum.PROCESSING_FAILURE.getCode(), "上传文件失败");
        } catch (QiniuException ex2) {
            LOGGER.error("上传文件参数localFilePath:{}和fileSpaceName:{},bodyString错误信息{}", localFilePath, fileSpaceName, ex2);
            throw new DoorException(ResultCodeEnum.PROCESSING_FAILURE.getCode(), "上传文件失败" +  ex2);
        }
    }
}

Answer 1

默认不指定key的情况下，以文件内容的hash值作为文件名。

至于文件名后缀设置，指定key就可以了，例如：String key = "/img/test.jpg"。