//通过ImageMagic工具将失真的jpg(有损压缩)转成png（无损压缩）后可成功生成pdf
    
    public static void main(String[] args) throws Exception {
        String filePath = "D:\\test\\15.jpg";
        File file = new File(filePath);
        byte[] fileBytes = FileUtil.readBytes(file);
        String outPath =  "D:\\test\\15_result_pdf.pdf";
        String SERVER_URL = "http://172.31.96.176:8085/"+"/tuling/ocr/v2/file/{trackId}";
        Result<String> ocrResult = null;
        String trackId = UUID.randomUUID().toString();
        String serviceUrl = StringUtils.replace(SERVER_URL, "{trackId}", trackId);
        serviceUrl=serviceUrl +"?params={params}";
        JSONObject params = new JSONObject();
        params.put("pagetype", "page");
        params.put("funclist", "");
        params.put("resultlevel", "3");

        params.put("pagetype", "page");
        //DEFAULT_PARAMS_JSON.put("funclist", "ocr,od");
        params.put("funclist", "");
        //od 朝向检测 ；ic 图片分类； er 证据检出（签章、收印、插图、手写体）
        params.put("resultlevel", "3");

        HttpHeaders headers = new HttpHeaders();
        //headers.setContentType(MediaType.MULTIPART_FORM_DATA_VALUE.toString());
        headers.add("Content-Type", MediaType.MULTIPART_FORM_DATA_VALUE);
        FileSystemResource resource = new FileSystemResource(file);
        MultiValueMap<String, Object> form = new LinkedMultiValueMap<>();
        form.add("picFile", resource);

        HttpEntity<MultiValueMap<String, Object>> httpEntity = new HttpEntity<>(form, headers);
        String finalServiceUrl = serviceUrl;
        String paramJson = params.toJSONString();
        RestTemplate restTemplate = new RestTemplate();
        String resp = restTemplate.postForObject(finalServiceUrl, httpEntity, String.class, paramJson);
        Result<String> body = Result.success(JSONUtil.getProp(JSONUtil.toJsonNode(resp), "body", String.class));
        String ocrJson = body.getData();
        byte[] bytes = new PdfComposeUtil().handleCompose(fileBytes, ocrJson);
        FileUtil.writeBytes(bytes,outPath);
    }
      /*  Image image = Image.getInstance(filePath);
        image.getPlainHeight();*/
    }