RestTemplate发送form-data请求上传rul资源文件及对象参数方式

/**
     * 通过url获取文件资源
     * @param url
     * @param fileName
     * @return
     * @throws IOException
     */
    private static ByteArrayResource getResourceByUrl(String url,String fileName) throws IOException {
        // 通过url获取输入流
        InputStream inputStream = getFileInputStream(url);
        // 读取输入流到字节数组
        byte[] bytes = readBytes(inputStream);
        // 将自己数组转为文件资源
        return new ByteArrayResource(bytes) {
            @Override
            public String getFilename() {
                // 指定文件名称
                return fileName;
            }
        };
    }

    /*读取网络文件*/
    public static InputStream getFileInputStream(String path) {
        URL url = null;
        try {
            url = new URL(path);
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            //设置超时间为3秒
            conn.setConnectTimeout(3*1000);
            //防止屏蔽程序抓取而返回403错误
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            //得到输入流
            return conn.getInputStream();
        } catch (Exception e) {
            logger.error("读取网络文件异常:"+path);
        }
        return null;
    }

    /**
     * 读取输入流到字节数组
     * @param in
     * @return
     * @throws IOException
     */
    public static byte[] readBytes(InputStream in) throws IOException {
        //读取字节的缓冲
        byte[] buffer = new byte[1024];
        //最终的数据
        byte[] result = new byte[0];
        int size = 0;
        while ((size = in.read(buffer)) != -1) {
            int oldLen = result.length;
            byte[] tmp = new byte[oldLen + size];
            if (oldLen > 0) {//copy 旧字节
                System.arraycopy(result, 0, tmp, 0, oldLen);
            }
            //copy 新字节
            System.arraycopy(buffer, 0, tmp, oldLen, size);

            result = tmp;
        }
        return result;
    }

/**
     * form-data的post 请求
     * @param params 请求参数
     * @param modelUrl 模块url
     * @return
     */
    public static JSONObject postFormData( MultiValueMap<String, Object> params, String modelUrl) {
        HttpHeaders headers = new HttpHeaders();
        headers.add("token", token);
        headers.setContentType(MediaType.MULTIPART_FORM_DATA);


        //MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
        HttpEntity<MultiValueMap<String, Object>> httpEntity = new HttpEntity<MultiValueMap<String, Object>>(params, headers);
        //String urlParams = url + "?params={json}";
        ResponseEntity<String> responseEntity = restTemplate.postForEntity(urlHeader+modelUrl, httpEntity, String.class);

        //ResponseEntity<String> responseEntity = restTemplate.exchange(urlHeader+modelUrl, HttpMethod.POST, httpEntity, String.class);
        return JSON.parseObject(responseEntity.getBody());

    }

// 测试市工程项目数字化管理平台接口
		
        MultiValueMap<String, Object> params = new LinkedMultiValueMap<String, Object>();
        params.add("accessCode",accessCode);
        params.add("secretKey",secretKey);
        params.add("type","GC0019001");
        params.add("name","日志名称1");
        params.add("weather","天气");
        params.add("dairyDate",new Date());
        params.add("recordPerson",OperationInfo.builder().operator("张三").longitude("106.57").latitude("29.55").build());
        params.add("content","内容");
        params.add("uploadPerson",OperationInfo.builder().operator("张三").longitude("106.57").latitude("29.55").build());
        //FileSystemResource fileSystemResource = new FileSystemResource("D:/浏览器下载/图/test1.jpg");
        //FileSystemResource fileSystemResource = new FileSystemResource("http://192.168.5.91:9300/statics/project_61/safety/2021/12/22/cfc8b2e9-4536-44cb-a098-25cc6ed84e6b.jpg");
        //通过url获取文件资源
        ByteArrayResource contentsAsResource = getResourceByUrl("http://192.168.5.91:9300/statics/project_61/safety/2021/12/22/cfc8b2e9-4536-44cb-a098-25cc6ed84e6b.jpg","ces.jpg");
        params.add("files", contentsAsResource);
        List<FileInfo> fileInfos = new ArrayList<>();
        // 同上面指定的文件名
        fileInfos.add(FileInfo.builder().fileName("ces.jpg").documentType("GC0013001")
            .unitProjectId("dc77d2c538cb4491a4b6aea006f9e48f").documentDirectoryId("3015").build());
        params.add("fileInfos", JSONArray.parseArray(JSONObject.toJSONString(fileInfos)));

        JSONObject jsonObject = postFormData(params, "/cq-szh-projectdocumentscomputesvc/api/service/addEngineerLog");
        System.out.println(jsonObject);