/**

      * 调用流程上传文件接口上传文件

      * @param url

      * @param path

      * @return

      */

     public static String sendPostUplodFile(String url,String path) {

         DataOutputStream out = null;

         BufferedReader in = null;

         String result = "";

         try {

             URL realUrl = new URL(url);

             //打开和URL之间的连接

             HttpURLConnection conn = (HttpURLConnection)realUrl.openConnection();

             //发送POST请求必须设置如下两行

             conn.setDoOutput(true);

             conn.setDoInput(true);

             String BOUNDARY = "----WebKitFormBoundary07I8UIuBx6LN2KyY";

             conn.setUseCaches(false);

             conn.setRequestMethod("POST");

             conn.setRequestProperty("connection", "Keep-Alive");

 //            conn.setRequestProperty("user-agent", "Mozilla/4.0 (conpatible; MSIE 6.0; Windows NT 5.1; SV1)");

             conn.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36");

             conn.setRequestProperty("Charsert", "UTF-8");

             conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);

             conn.connect();

             out = new DataOutputStream(conn.getOutputStream());

             byte[] end_data = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();

             //添加参数

             StringBuffer sb1 = new StringBuffer();

             sb1.append("--");

             sb1.append(BOUNDARY);

             sb1.append("\r\n");

             sb1.append("Content-Disposition: form-data;name=\"luid\"");

             sb1.append("\r\n");

             sb1.append("\r\n");

             sb1.append("123");

             sb1.append("\r\n");

             out.write(sb1.toString().getBytes());

             //添加参数file

             File file = new File(path);

             StringBuffer sb = new StringBuffer();

             sb.append("--");

             sb.append(BOUNDARY);

             sb.append("\r\n");

             sb.append("Content-Disposition: form-data;name=\"file\";filename=\"" + file.getName() + "\"");

             sb.append("\r\n");

             sb.append("Content-Type: application/octet-stream");

             sb.append("\r\n");

             sb.append("\r\n");

             out.write(sb.toString().getBytes());

             DataInputStream in1 = new DataInputStream(new FileInputStream(file));

             int bytes = 0;

             byte[] bufferOut = new byte[1024];

             while ((bytes = in1.read(bufferOut)) != -1) {

                 out.write(bufferOut,0,bytes);

             }

             out.write("\r\n".getBytes());

             in1.close();

             out.write(end_data);

             //flush输出流的缓冲

             out.flush();

             //定义BufferedReader输入流来读取URL的响应

             in = new BufferedReader(new InputStreamReader(conn.getInputStream()));

             String line;

             while ((line = in.readLine()) != null) {

                 result += line;

             }

         } catch (Exception e) {

             // TODO Auto-generated catch block

             log.error("发送POST请求出现异常" + e);

             e.printStackTrace();

         }finally {

             try {

                 if (out != null) {

                     out.close();

                 }

                 if (in != null) {

                     in.close();

                 }

             } catch (Exception ex) {

                 // TODO: handle exception

                 ex.printStackTrace();

             }

         }

         return result;

     }

 //将字符串转换json并取值
1 public static String getFileId(String result) {

         JSONObject json = JSONObject.parseObject(result);

         String fileId = "";

         if (result != null) {

             String code = json.getString("errorCode");

             if (code.equals("0000")) {

                 fileId = json.getString("fileId");

             }

         }

         return fileId;

     }