调用接口之后报这个错误 [图片] PDF是上传成功的（但是是一个普通的PDF文件，没有发票内容），难道是因为PDF不是一个真正的电子发票的缘故？还是其他原因？求指教

想看看大家上传PDF是怎么做的，可以分享一下代码或者软件测试案例吗？ 下面是我的代码 public static String uploadPdfFile(String accessToken, File file){// HttpPost httpPost = new HttpPost(accessToken); CloseableHttpResponse response = null; CloseableHttpClient httpClient = HttpClients.createDefault(); RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(5000).setConnectTimeout(5000).build(); httpPost.setConfig(requestConfig); //2.3 设置请求实体，封装了请求参数 HttpEntity requestEntity = MultipartEntityBuilder.create().addPart("pdf", new FileBody(file, ContentType.create("multipart/form-data", Consts.UTF_8), file.getName())).build(); httpPost.setEntity(requestEntity); try { response = httpClient.execute(httpPost, new BasicHttpContext()); System.out.println(response); if (response.getStatusLine().getStatusCode() != 200) { throw new Exception("上传PDF文件至微信,请求失败"); } HttpEntity entity = response.getEntity();// if (entity != null) { String resultStr = EntityUtils.toString(entity, "utf-8"); System.out.println(resultStr); JSONObject result = JSON.parseObject(resultStr); int errcode = (Integer)result.get("errcode"); if(errcode != 0){ throw new Exception("上传PDF文件至微信失败"); } return result.getString("s_media_id"); } } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } finally { if (response != null) { try { response.close(); } catch (IOException e) { e.printStackTrace(); } } } return null; }