xutils 如何获取直接response.getEntity();：报错

由于提交数据和返回都是直接传递流，xutils 如何获取直接response.getEntity(); 需要直接读取。

看到httphanlder的handleResponse方法转成string了，直接获取inputstream应该如何操作

private ResponseInfo<T> handleResponse(HttpResponse response) throws HttpException, IOException {
        if (response == null) {
            throw new HttpException("response is null");
        }
        if (isCancelled()) return null;

        StatusLine status = response.getStatusLine();
        int statusCode = status.getStatusCode();
        if (statusCode < 300) {
            Object result = null;
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                isUploading = false;
                if (isDownloadingFile) {
                    autoResume = autoResume && OtherUtils.isSupportRange(response);
                    String responseFileName = autoRename ? OtherUtils.getFileNameFromHttpResponse(response) : null;
                    result = mFileDownloadHandler.handleEntity(entity, this, fileSavePath, autoResume, responseFileName);
                } else {
                    result = mStringDownloadHandler.handleEntity(entity, this, charset);
                    if (HttpUtils.sHttpCache.isEnabled(requestMethod)) {
                        HttpUtils.sHttpCache.put(requestUrl, (String) result, expiry);
                    }
                }
            }
            return new ResponseInfo<T>(response, (T) result, false);
        } else if (statusCode == 301 || statusCode == 302) {
            if (httpRedirectHandler == null) {
                httpRedirectHandler = new DefaultHttpRedirectHandler();
            }
            HttpRequestBase request = httpRedirectHandler.getDirectRequest(response);
            if (request != null) {
                return this.sendRequest(request);
            }
        } else if (statusCode == 416) {
            throw new HttpException(statusCode, "maybe the file has downloaded completely");
        } else {
            throw new HttpException(statusCode, status.getReasonPhrase());
        }
        return null;
    }