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Editorial Team
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Asked: 2026-05-24T12:53:28+00:00

In my application I want to post from my android application XML data in

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In my application I want to post from my android application XML data in the remote server which is using REST service. My code is below:

 String url = "api.example.com";
    int port = 443;
    String query = "<?xml version='1.0' encoding='UTF-8'?><request><client><name>APIappDevAccount</name><password>123456</password></client><user><name>foyzulkarim</name><password>123456</password><groupId>12345</groupId></user></request>";
    Socket socket = null;
    try {
    socket =  new Socket(url,port);
    } catch (UnknownHostException e2) {
                // TODO Auto-generated catch block
                e2.printStackTrace();
            } catch (IOException e2) {
                // TODO Auto-generated catch block
                e2.printStackTrace();
            }
    BufferedReader br = null;
            try {
                br = new BufferedReader(new InputStreamReader(socket.getInputStream()));                        
            } catch (IOException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            PrintStream pw = null;
            try {
                pw = new PrintStream(socket.getOutputStream());

            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            pw.print("POST api.example.com/rest/rest/user");
    pw.print("Content-Type: application/xml");
            pw.print("Content-Length:" + query.length());
            pw.print(query);
            System.out.println("hello foysal.");
            //get result
            String l = null;
            String text="";

            try {
                while ((l=br.readLine())!=null) {
                    System.out.println(l);
            text+=l;        
                }
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            pw.close();
            try {
                br.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

But that server is behind SSL/HTTPS protocol so i am getting the below 400 Bad Request as response.

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><html><head><title>400 Bad Request</title></head><body><h1>Bad Request</h1><p>Your browser sent a request that this server could not understand.<br />Reason: You're speaking plain HTTP to an SSL-enabled server port.<br />Instead use the HTTPS scheme to access this URL, please.<br /><blockquote>Hint: <a href="https://api.example.com/"><b>https://api.example.com/</b></a></blockquote></p></body></html>

If I use SSLSocketFactory like below

SocketFactory socketFactory = SSLSocketFactory.getDefault();
    Socket socket = null;

    try {
        socket = socketFactory.createSocket(url, port);

I got exception 

javax.net.ssl.SSLException: Not trusted server certificate
java.security.cert.CertPathValidatorException: TrustAnchor for CertPath not found.

at line 

br = new BufferedReader(new InputStreamReader(socket.getInputStream()));

My question is, how can i post the data over SSL from android application in my above scenario?
I guess many of us are facing this problem, so I am requesting you to give me/us some elaborated answers.Cheers.

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1 Answer

  1. Editorial Team

    I have done it. The code is given below. 

    private String executeRequest(String targetURL, final String requestMethod,
            String soap_request_message_header, String soap_request_message_body) {
        URL url;
        HttpURLConnection connection = null;
        try {
            url = new URL(targetURL);
            connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod(requestMethod);

            connection.setRequestProperty("SOAPAction",
                    soap_request_message_header);

            connection.setUseCaches(false);
            connection.setDoInput(true);
            connection.setDoOutput(true);

            // Send request
            DataOutputStream wr = new DataOutputStream(connection
                    .getOutputStream());
            wr.writeBytes(soap_request_message_body);
            wr.flush();
            wr.close();

            // Get Response
            InputStream is;
            final int responseCode = connection.getResponseCode();
            Log.i("response", "code=" + responseCode);
            if (responseCode <= 400) {
                is = connection.getInputStream();
            } else {
                /* error from server */
                is = connection.getErrorStream();
            }
            // is= connection.getInputStream();
            BufferedReader rd = new BufferedReader(new InputStreamReader(is));
            String line;
            StringBuffer response = new StringBuffer();
            while ((line = rd.readLine()) != null) {
                response.append(line);
                response.append('\r');
            }
            rd.close();
            Log.i("response", "" + response.toString());
            return response.toString();

        } catch (Exception e) {

            Log.e("error https", "", e);
            return e.getMessage();

        } finally {

            if (connection != null) {
                connection.disconnect();
            }
        }
    }
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