Java 具有基本身份验证的Servlet POST请求

我正在尝试向需要基本身份验证的URL发送POST请求，我到处寻找解决方案，但我的servlet仍然没有得到结果，这是我的代码，我希望您能帮助我解决这个问题，因为我正处于真正的挣扎中

       //Basic Auth + envoi réponse
       //backUrl=http://....../ws   
        String webPage = backUrl ;
        String name = "CLT_NAGT";
        String password = "azerty@1234567";

        String authString = name + ":" + password;
        System.out.println("auth string: " + authString);
        byte[] authEncBytes = Base64.encodeBase64(authString.getBytes());
        String authStringEnc = new String(authEncBytes);
        System.out.println("Base64 encoded auth string: " + authStringEnc);

        //Connexion

        URL url = new URL(webPage);
        HttpURLConnection urlConnection = (HttpURLConnection)url.openConnection();
        urlConnection.setRequestMethod("POST");
        urlConnection.setDoOutput(true);
        urlConnection.setRequestProperty("Authorization", "Basic " + authStringEnc);
        urlConnection.setRequestProperty("Content-Type", "application/json");
        urlConnection.connect();

        //Envoi du JSON 

        OutputStreamWriter outputWriter = new OutputStreamWriter(urlConnection.getOutputStream());
        outputWriter.write(Json);//Json is a json.toString() object
        outputWriter.flush();
        outputWriter.close(); 

在我的浏览器中，我得到一个空白页面，我的eclipse不会抛出异常或任何错误。如何修复此问题？

这是我的servlet（服务器端）

---

您在哪里阅读回复？谢谢您的回复。您正在谈论inputstreamreader吗？如果您在浏览器中没有得到任何响应，那么您对客户端代码的期望是什么？您需要共享服务器端实现，特别是您尝试调用的servlet代码。我只需要将json.toString（）发送到指定的URL。这是我的servlet：此部分属于答案，不适用于部分帖子。此外，我们不能查看您的servlet代码。您需要告诉我们您是否从servlet得到任何响应。您需要调试此部分，检查服务器日志，尝试任何现有的客户端（如postman），并验证服务器端实现

    public class ServletAO extends HttpServlet {

    /**
    * 
    */
   private static final long serialVersionUID = 1L;

    @Override
   protected void doPost(HttpServletRequest req, HttpServletResponse resp) 
    throws ServletException, IOException {

    resp.setContentType("application/json");

    //récupération du resultat de l'exécution de l'AO
    PA865AccessObject ao = (PA865AccessObject) req.getAttribute("ao");
    String aoResp = ao.getMessage();
    String rep="";
    DateFormat df = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
    Date today = Calendar.getInstance().getTime();
    String reportDate = df.format(today);
    //récupération des paramètres de la requete
       //       String nomPrenom = req.getParameter("nomPrenom");
    String adrLigne1 = req.getParameter("adresse1");
    String adrLigne2 = req.getParameter("adresse2");
    String adrLigne3 = req.getParameter("adresse3");
    String adrLigne4 = req.getParameter("adrLigne4");
    String adrLigne5 = req.getParameter("adrLigne5");
    String codePostal = req.getParameter("codepostal");
    String ville = req.getParameter("ville");
    String pays = req.getParameter("pays");
    String numContrat = req.getParameter("numContrat");
    String numAbonne = req.getParameter("numAbonne");
    String idRequest = req.getParameter("idRequest");
    String backUrl = req.getParameter("backurl");


    if(aoResp.indexOf("MISE A JOUR EFFECTUEE")>-1)
    {
        rep="2-Taken";
    }
    else 
    {
        rep="4-Dropped";
    }

    //Fichier JSON


    JSONObject technical= new JSONObject();
    try {
        technical.put("topic", "fr-sicl-Address_Contact_Change_Request-v1");
        technical.put("organization", "fr");
        technical.put("sa","SICLIENT");
        technical.put("nature", "business");
        technical.put("sk", "0");
        technical.put("version", "1");
        technical.put("source_event_id", "ID");
        technical.put("event_id", "IDCalcule");
        technical.put("event_date_time", reportDate);
        technical.put("emission_date_time", reportDate);
    } catch (JSONException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }


    System.out.println(technical.toString());



    JSONObject payload= new JSONObject();
    try {
        payload.put("distrib_customer_ids", numAbonne);
        payload.put("party_customer_id", "A verifier");
        payload.put("contract_id",numContrat);
        payload.put("correlation_id", idRequest);
        payload.put("request_id", idRequest);
        payload.put("request_issued_date_time", reportDate);
        payload.put("request_event_type", rep);
        payload.put("request_event_reason", "PA865");
        payload.put("source_system", "CIARD");
        payload.put("party_row_id", "A verifier");
        payload.put("replaced_address_date_time", reportDate);
    } catch (JSONException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }


    System.out.println(payload.toString());




    JSONObject newAdress = new JSONObject();

    try {
        newAdress.put("recipient_line1", adrLigne1);
        newAdress.put("line2", adrLigne2);
        newAdress.put("line3",adrLigne3);
        newAdress.put("street_line4", adrLigne4);
        newAdress.put("line5", adrLigne5);
        newAdress.put("zip_locality_line6", "");
        newAdress.put("country_label_line7", "");
        newAdress.put("zip_postal_code", codePostal);
        newAdress.put("locality", ville);
        newAdress.put("country", pays);
    } catch (JSONException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    System.out.println(newAdress.toString());

    String Json = 
   technical.toString()+payload.toString()+newAdress.toString();


   //Basic Auth + envoi réponse

        String webPage = backUrl ;
        String name = "CLT_NAGT";
        String password = "azerty@1234567";

        String authString = name + ":" + password;
        System.out.println("auth string: " + authString);
        byte[] authEncBytes = Base64.encodeBase64(authString.getBytes());
        String authStringEnc = new String(authEncBytes);
        System.out.println("Base64 encoded auth string: " + authStringEnc);

        //Connexion

        URL url = new URL(webPage);
        HttpURLConnection urlConnection = 
        (HttpURLConnection)url.openConnection();
        urlConnection.setRequestMethod("POST");
        urlConnection.setDoOutput(true);
        urlConnection.setRequestProperty("Authorization", "Basic " + 
      authStringEnc);
        urlConnection.setRequestProperty("Content-Type", 
      "application/json");
        urlConnection.connect();

        //Envoi du JSON 

        OutputStreamWriter outputWriter = new 
        OutputStreamWriter(urlConnection.getOutputStream());
        outputWriter.write("");
        outputWriter.flush();
        outputWriter.close();

        //resp.flushBuffer();   

     }



     }