Example usage for java.io DataOutputStream DataOutputStream

Introduction

In this page you can find the example usage for java.io DataOutputStream DataOutputStream.

Prototype

public DataOutputStream(OutputStream out) 

Source Link

Document

Creates a new data output stream to write data to the specified underlying output stream.

Usage

From source file:pushandroid.POST2GCM.java

public static void post(Content content) {

    try {/* ww  w .j a  va 2s .  c om*/

        // 1. URL
        URL url = new URL(URL);

        // 2. Open connection
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();

        // 3. Specify POST method
        conn.setRequestMethod("POST");

        // 4. Set the headers
        conn.setRequestProperty("Content-Type", "application/json");
        conn.setRequestProperty("Authorization", "key=" + apiKey);

        conn.setDoOutput(true);

        // 5. Add JSON data into POST request body
        //`5.1 Use Jackson object mapper to convert Contnet object into JSON
        ObjectMapper mapper = new ObjectMapper();

        // 5.2 Get connection output stream
        DataOutputStream wr = new DataOutputStream(conn.getOutputStream());

        // 5.3 Copy Content "JSON" into
        mapper.writeValue(wr, content);

        // 5.4 Send the request
        wr.flush();

        // 5.5 close
        wr.close();

        // 6. Get the response
        int responseCode = conn.getResponseCode();
        System.out.println("\nSending 'POST' request to URL : " + url);
        System.out.println("Response Code : " + responseCode);

        BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        String inputLine;
        StringBuilder response = new StringBuilder();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        // 7. Print result
        System.out.println(response.toString());

    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

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From source file:MainClass.java

public void run() {
    try {/*w ww. j a v a  2  s.  com*/
        Socket client = serverSocket.accept();

        DataInputStream in = new DataInputStream(client.getInputStream());
        BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
        DataOutputStream out = new DataOutputStream(client.getOutputStream());

        while (true) {
            String message = in.readUTF();
            System.out.println(message);
            System.out.print("Enter response: ");
            String response = console.readLine();

            out.writeUTF(response);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

From source file:Main.java

public static String uploadFile(File file, String RequestURL) {
    String BOUNDARY = UUID.randomUUID().toString();
    String PREFIX = "--", LINE_END = "\r\n";
    String CONTENT_TYPE = "multipart/form-data";

    try {/*from w  w w  .j  a  v  a  2 s  . c o  m*/
        URL url = new URL(RequestURL);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(TIME_OUT);
        conn.setConnectTimeout(TIME_OUT);
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setUseCaches(false);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Charset", CHARSET);
        conn.setRequestProperty("connection", "keep-alive");
        conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY);
        if (file != null) {

            OutputStream outputSteam = conn.getOutputStream();

            DataOutputStream dos = new DataOutputStream(outputSteam);
            StringBuffer sb = new StringBuffer();
            sb.append(PREFIX);
            sb.append(BOUNDARY);
            sb.append(LINE_END);

            sb.append("Content-Disposition: form-data; name=\"img\"; filename=\"" + file.getName() + "\""
                    + LINE_END);
            sb.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINE_END);
            sb.append(LINE_END);
            dos.write(sb.toString().getBytes());
            InputStream is = new FileInputStream(file);
            byte[] bytes = new byte[1024];
            int len = 0;
            while ((len = is.read(bytes)) != -1) {
                dos.write(bytes, 0, len);
            }
            is.close();
            dos.write(LINE_END.getBytes());
            byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes();
            dos.write(end_data);
            dos.flush();

            int res = conn.getResponseCode();
            Log.e(TAG, "response code:" + res);
            if (res == 200) {
                return SUCCESS;
            }
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return FAILURE;
}

---

From source file:MainClass.java

public NumberProducer(OutputStream out, int howMany) {
    theOutput = new DataOutputStream(out);
    this.howMany = howMany;
}

---

From source file:Main.java

public static String postMultiPart(String urlTo, String post, String filepath, String filefield)
        throws ParseException, IOException {
    HttpURLConnection connection = null;
    DataOutputStream outputStream = null;
    InputStream inputStream = null;

    String twoHyphens = "--";
    String boundary = "*****" + Long.toString(System.currentTimeMillis()) + "*****";
    String lineEnd = "\r\n";

    String result = "";

    int bytesRead, bytesAvailable, bufferSize;
    byte[] buffer;
    int maxBufferSize = 1 * 1024 * 1024;

    String[] q = filepath.split("/");
    int idx = q.length - 1;

    try {/*from   w  w w .ja va2 s .c  o m*/
        File file = new File(filepath);
        FileInputStream fileInputStream = new FileInputStream(file);

        URL url = new URL(urlTo);
        connection = (HttpURLConnection) url.openConnection();

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

        connection.setRequestMethod("POST");
        connection.setRequestProperty("Connection", "Keep-Alive");
        connection.setRequestProperty("User-Agent", "Android Multipart HTTP Client 1.0");
        connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);

        outputStream = new DataOutputStream(connection.getOutputStream());
        outputStream.writeBytes(twoHyphens + boundary + lineEnd);
        outputStream.writeBytes("Content-Disposition: form-data; name=\"" + filefield + "\"; filename=\""
                + q[idx] + "\"" + lineEnd);
        outputStream.writeBytes("Content-Type: image/jpeg" + lineEnd);
        outputStream.writeBytes("Content-Transfer-Encoding: binary" + lineEnd);
        outputStream.writeBytes(lineEnd);

        bytesAvailable = fileInputStream.available();
        bufferSize = Math.min(bytesAvailable, maxBufferSize);
        buffer = new byte[bufferSize];

        bytesRead = fileInputStream.read(buffer, 0, bufferSize);
        while (bytesRead > 0) {
            outputStream.write(buffer, 0, bufferSize);
            bytesAvailable = fileInputStream.available();
            bufferSize = Math.min(bytesAvailable, maxBufferSize);
            bytesRead = fileInputStream.read(buffer, 0, bufferSize);
        }

        outputStream.writeBytes(lineEnd);

        // Upload POST Data
        String[] posts = post.split("&");
        int max = posts.length;
        for (int i = 0; i < max; i++) {
            outputStream.writeBytes(twoHyphens + boundary + lineEnd);
            String[] kv = posts[i].split("=");
            outputStream.writeBytes("Content-Disposition: form-data; name=\"" + kv[0] + "\"" + lineEnd);
            outputStream.writeBytes("Content-Type: text/plain" + lineEnd);
            outputStream.writeBytes(lineEnd);
            outputStream.writeBytes(kv[1]);
            outputStream.writeBytes(lineEnd);
        }

        outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

        inputStream = connection.getInputStream();
        result = convertStreamToString(inputStream);

        fileInputStream.close();
        inputStream.close();
        outputStream.flush();
        outputStream.close();

        return result;
    } catch (Exception e) {
        Log.e("MultipartRequest", "Multipart Form Upload Error");
        e.printStackTrace();
        return "error";
    }
}

---

From source file:gov.nasa.arc.geocam.geocam.HttpPost.java

public static String postFiles(String url, Map<String, String> vars, Map<String, File> files) {
    try {/*  w w w  .j  ava2  s . c o  m*/
        HttpURLConnection conn = (HttpURLConnection) (new URL(url)).openConnection();
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setUseCaches(false);

        conn.setRequestMethod("POST");
        conn.setRequestProperty("Connection", "Keep-Alive");
        conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);

        DataOutputStream out = new DataOutputStream(conn.getOutputStream());
        assembleMultipartFiles(out, vars, files);

        InputStream in = conn.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            sb.append(line);
        }
        return sb.toString();
    } catch (UnsupportedEncodingException e) {
        return "Encoding exception: " + e;
    } catch (IOException e) {
        return "IOException: " + e;
    } catch (IllegalStateException e) {
        return "IllegalState: " + e;
    }
}

---

From source file:Main.java

public void run() {
    while (true) {
        try {//from  w w  w.  j a  va  2s .c  om
            System.out.println("Waiting for client on port " + serverSocket.getLocalPort() + "...");
            Socket server = serverSocket.accept();

            System.out.println("Just connected to " + server.getRemoteSocketAddress());
            DataInputStream in = new DataInputStream(server.getInputStream());
            System.out.println(in.readUTF());

            DataOutputStream out = new DataOutputStream(server.getOutputStream());
            out.writeUTF("Thank you for connecting to " + server.getLocalSocketAddress() + "\nGoodbye!");

            server.close();
        } catch (SocketTimeoutException s) {
            System.out.println("Socket timed out!");
            break;
        } catch (IOException e) {
            e.printStackTrace();
            break;
        }
    }
}

---

From source file:com.awcoleman.ExampleJobSummaryLogWithOutput.utility.CreateBinaryDatafile.java

public CreateBinaryDatafile(int numrecs) throws IOException {

    Random rangen = new Random();
    long recid = 0;
    try (DataOutputStream out = new DataOutputStream(new FileOutputStream("/tmp/sampleDatafile.bin"));) {

        for (int ii = 0; ii < numrecs; ii++) {
            out.writeUTF(RandomStringUtils.randomAlphabetic(10));
            out.writeLong(++recid);//ww  w.j  a v  a  2s . c  o  m
            out.writeInt(rangen.nextInt(32));
            out.writeInt(rangen.nextInt(3600));
            out.writeUTF(generateDatetime());
        }
    }
}

---

From source file:Main.java

public static String httpPost(String urlStr, List<NameValuePair> params) {

    String paramsEncoded = "";
    if (params != null) {
        paramsEncoded = URLEncodedUtils.format(params, "UTF-8");
    }/*from  w  w w.j  a  va 2s  .c  o m*/

    String result = null;
    URL url = null;
    HttpURLConnection connection = null;
    InputStreamReader in = null;
    try {
        url = new URL(urlStr);
        connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.setDoOutput(true);
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        connection.setRequestProperty("Charset", "utf-8");
        DataOutputStream dop = new DataOutputStream(connection.getOutputStream());
        dop.writeBytes(paramsEncoded);
        dop.flush();
        dop.close();

        in = new InputStreamReader(connection.getInputStream());
        BufferedReader bufferedReader = new BufferedReader(in);
        StringBuffer strBuffer = new StringBuffer();
        String line = null;
        while ((line = bufferedReader.readLine()) != null) {
            strBuffer.append(line);
        }
        result = strBuffer.toString();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (connection != null) {
            connection.disconnect();
        }
        if (in != null) {
            try {
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }
    return result;
}

---

From source file:Main.java

public static int execRootCmdSilent(String cmd) {
    try {//from w ww. j  a v  a  2 s  . c  o m
        Process p = Runtime.getRuntime().exec("su ");
        Object obj = p.getOutputStream();
        DataOutputStream dOutStream = new DataOutputStream((OutputStream) obj);
        String str = String.valueOf(cmd);
        obj = str + "\n";
        dOutStream.writeBytes((String) obj);
        dOutStream.flush();
        dOutStream.writeBytes("exit\n");
        dOutStream.flush();
        p.waitFor();
        int result = p.exitValue();
        return (Integer) result;
    } catch (Exception e) {
        e.printStackTrace();
        return -1;
    }
}

---

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