使用缓冲区读取器输入文本文件，解析它并使用java以json数组格式存储并进行一次PUT api调用

Question

我有一个文本文件，我试图逐个获取数据并将其存储在rri部分，当前时间戳记在一个PUT调用下，但目前只提取一个值或多个请求？请帮助我度过难关。我将在下面的评论部分分享文本文件和预期结果。

        File file = new File("DataToInput.txt");
        FileReader fileReader = new FileReader(file);
        BufferedReader bufferedReader = new BufferedReader(fileReader);
        StringBuffer stringBuffer = new StringBuffer();
        String line;

    String urlString= "http://34.237.64.52 /v1/iot-hitoe-analytics/groups/0d98a4d3-207c-41e3-a943-363b73d58adf/raw-data";
    URL url = new URL(urlString);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.addRequestProperty("User-Agent", 
            "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)");
    conn.setDoOutput(true);
    conn.setDoInput(true);
    conn.setRequestMethod("PUT");
   //conn.connect();
    conn.setRequestProperty("content-type", "application/json");        
    conn.setRequestProperty("Accept", "application/json");

JSONObject Main = new JSONObject();    
JSONArray alldata = new JSONArray();
JSONObject alldata1 = new JSONObject();

JSONObject metadata = new JSONObject();
    metadata.put("sensorTypeId", sensorTypeId);
    metadata.put("sensorId", sensorId);
    metadata.put("sensorName", sensorName);
    metadata.put("connectionMode",connectionMode);

JSONObject owner = new JSONObject();
     owner.put("groupId", groupId);
     owner.put("entityId", entityId);


JSONObject sensordata = new JSONObject();
JSONObject rawRri = new JSONObject();
JSONArray samples_rri = new JSONArray();
JSONObject samples1_rri = new JSONObject();

while ((line = bufferedReader.readLine()) != null) {
    String[] fields = line.split(" ");

   // System.out.println("fields size is "+fields.length);
   // System.out.println("fields value is "+fields[0]);
    stringBuffer.append(line);
    stringBuffer.append("\n");
}

    samples1_rri.put("rri",line);
    samples1_rri.put("timestamp",System.currentTimeMillis());

samples_rri.put(samples1_rri);
rawRri.put("samples", samples_rri);
sensordata.put("rawRri", rawRri);


alldata1.put("metadata", metadata);
alldata1.put("owner", owner);
alldata1.put("sensordata", sensordata);
alldata.put(alldata1);
Main.put("alldata", alldata);


String payload = Main.toString();

ObjectMapper mapper = new ObjectMapper();
@SuppressWarnings("unused")
Object json = mapper.readValue(payload, Object.class);
String indented = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(json);
System.out.println(indented);

/*OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
writer.write(indented);
writer.close();*/

    fileReader.close();
    bufferedReader.close();
    //System.out.println("Contents of file:");
    System.out.println(stringBuffer.toString());

    URLEncoder.encode(urlString,"UTF-8");
        System.out.println("response codec: "+conn.getResponseCode());
      //  if (conn.getResponseCode() != HttpURLConnection.HTTP_CREATED) {
        if (conn.getResponseCode() != HttpURLConnection.HTTP_CREATED) {
       // throw new RuntimeException("Failed : HTTP error code : "
         //           + conn.getResponseCode());
            System.out.println("response received!!");   
        }



        else {
        System.out.println("response: "+conn.getInputStream());
        }

        BufferedReader br1 = new BufferedReader(new InputStreamReader(
                (conn.getInputStream())));

        String output;
        System.out.println("Output from Server .... \n");
        while ((output = br1.readLine()) != null) {
            System.out.println(output);
        }