Example usage for java.io DataInputStream read

List of usage examples for java.io DataInputStream read

  1. HOME
  2. Java
  3. java
  4. java.io.*
  5. DataInputStream
  6. read

Introduction

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

Prototype

public final int read(byte b[]) throws IOException

Source Link

Document

Reads some number of bytes from the contained input stream and stores them into the buffer array b.

Usage

From source file:XmlUtils.java

public static Document parse(URL url) throws DocumentException, IOException {
    URLConnection urlConnection;/*from   w  w  w .j  av a 2  s .  c o  m*/
    DataInputStream inStream;
    urlConnection = url.openConnection();
    ((HttpURLConnection) urlConnection).setRequestMethod("GET");

    urlConnection.setDoInput(true);
    urlConnection.setDoOutput(false);
    urlConnection.setUseCaches(false);
    inStream = new DataInputStream(urlConnection.getInputStream());

    byte[] bytes = new byte[1024];
    int read;
    StringBuilder builder = new StringBuilder();
    while ((read = inStream.read(bytes)) >= 0) {
        String readed = new String(bytes, 0, read, "UTF-8");
        builder.append(readed);
    }
    SAXReader reader = new SAXReader();

    XmlUtils.createIgnoreErrorHandler(reader);
    //        InputSource inputSource = new InputSource(new InputStreamReader(inStream, "UTF-8"));
    //        inputSource.setEncoding("UTF-8");
    Document dom = reader.read(new StringReader(builder.toString()));
    inStream.close();
    //        new InputStreamReader(Thread.currentThread().getContextClassLoader().getResourceAsStream("retrieval.xml"), "UTF-8")
    return dom;
}

From source file:com.mingsoft.weixin.util.UploadDownUtils.java

/**
 * ? ? /*from ww w  .  j av  a 2  s.  co  m*/
 * @param access_token ??
 * @param msgType image?voice?videothumb
 * @param localFile 
 * @return
 */
@Deprecated
public static String uploadMedia(String access_token, String msgType, String localFile) {
    String media_id = null;
    String url = "http://file.api.weixin.qq.com/cgi-bin/media/upload?access_token=" + access_token + "&type="
            + msgType;
    String local_url = localFile;
    try {
        File file = new File(local_url);
        if (!file.exists() || !file.isFile()) {
            log.error("==" + local_url);
            return null;
        }
        URL urlObj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) urlObj.openConnection();
        con.setRequestMethod("POST"); // Post????get?
        con.setDoInput(true);
        con.setDoOutput(true);
        con.setUseCaches(false); // post??
        // ?
        con.setRequestProperty("Connection", "Keep-Alive");
        con.setRequestProperty("Charset", "UTF-8");

        // 
        String BOUNDARY = "----------" + System.currentTimeMillis();
        con.setRequestProperty("content-type", "multipart/form-data; boundary=" + BOUNDARY);
        // con.setRequestProperty("Content-Type",
        // "multipart/mixed; boundary=" + BOUNDARY);
        // con.setRequestProperty("content-type", "text/html");
        // ?

        // 
        StringBuilder sb = new StringBuilder();
        sb.append("--"); // ////////?
        sb.append(BOUNDARY);
        sb.append("\r\n");
        sb.append("Content-Disposition: form-data;name=\"file\";filename=\"" + file.getName() + "\"\r\n");
        sb.append("Content-Type:application/octet-stream\r\n\r\n");
        byte[] head = sb.toString().getBytes("utf-8");
        // ?
        OutputStream out = new DataOutputStream(con.getOutputStream());
        out.write(head);

        // 
        DataInputStream in = new DataInputStream(new FileInputStream(file));
        int bytes = 0;
        byte[] bufferOut = new byte[1024];
        while ((bytes = in.read(bufferOut)) != -1) {
            out.write(bufferOut, 0, bytes);
        }
        in.close();
        // 
        byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// ??
        out.write(foot);
        out.flush();
        out.close();
        /**
         * ????,?????
         */
        // con.getResponseCode();
        try {
            // BufferedReader???URL?
            StringBuffer buffer = new StringBuffer();
            BufferedReader reader = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));
            String line = null;
            while ((line = reader.readLine()) != null) {
                // System.out.println(line);
                buffer.append(line);
            }
            String respStr = buffer.toString();
            log.debug("==respStr==" + respStr);
            try {
                JSONObject dataJson = JSONObject.parseObject(respStr);

                media_id = dataJson.getString("media_id");
            } catch (Exception e) {
                log.error("==respStr==" + respStr, e);
                try {
                    JSONObject dataJson = JSONObject.parseObject(respStr);
                    return dataJson.getString("errcode");
                } catch (Exception e1) {
                }
            }
        } catch (Exception e) {
            log.error("??POST?" + e);
        }
    } catch (Exception e) {
        log.error("?!=" + local_url);
        log.error("?!", e);
    } finally {
    }
    return media_id;
}

From source file:Messenger.TorLib.java

/**
 * This method opens a TOR socket, and does an anonymous DNS resolve through it.
 * Since Tor caches things, this is a very fast lookup if we've already connected there
 * The resolve does a gethostbyname() on the exit node.
 * @param targetHostname String containing the hostname to look up.
 * @return String representation of the IP address: "x.x.x.x"
 *//*from   ww  w .  java 2  s.  co  m*/
static String TorResolve(String targetHostname) {
    int targetPort = 0; // we dont need a port to resolve

    try {
        Socket s = TorSocketPre(targetHostname, targetPort, TOR_RESOLVE);
        DataInputStream is = new DataInputStream(s.getInputStream());

        byte version = is.readByte();
        byte status = is.readByte();
        if (status != (byte) 90) {
            //failed for some reason, return useful exception
            throw (new IOException(ParseSOCKSStatus(status)));
        }
        int port = is.readShort();
        byte[] ipAddrBytes = new byte[4];
        is.read(ipAddrBytes);
        InetAddress ia = InetAddress.getByAddress(ipAddrBytes);
        //System.out.println("Resolved into:"+ia);
        is.close();
        String addr = ia.toString().substring(1); // clip off the "/"
        return (addr);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return (null);
}

From source file:com.linkedin.pinot.core.common.datatable.DataTableImplV2.java

private static String decodeString(DataInputStream dataInputStream) throws IOException {
    int length = dataInputStream.readInt();
    if (length == 0) {
        return StringUtils.EMPTY;
    } else {/*from  w  w w . ja v  a  2 s .  c  o m*/
        byte[] buffer = new byte[length];
        int numBytesRead = dataInputStream.read(buffer);
        assert numBytesRead == length;
        return new String(buffer, UTF_8);
    }
}

From source file:org.rifidi.edge.adapter.csl.util.CslRfidTagServer.java

public static void clearReadBuffer(DataInputStream data) {
    byte[] inData = new byte[1024];
    try {/*from ww w . j a  v a2  s  .c o m*/
        while (data.available() != 0)
            data.read(inData);
    } catch (IOException e) {
        logger.error("Could not clear buffer: " + e.getMessage());
    }
}

From source file:at.tugraz.sss.serv.SSFileU.java

public static String readPNGToBase64Str(final String pngFilePath) throws Exception {

    final DataInputStream fileReader = new DataInputStream(new FileInputStream(new File(pngFilePath)));
    final List<Byte> bytes = new ArrayList<>();
    byte[] chunk = new byte[SSSocketU.socketTranmissionSize];
    int fileChunkLength;

    while (true) {

        fileChunkLength = fileReader.read(chunk);

        if (fileChunkLength == -1) {
            break;
        }//  w  ww.j  a  va  2  s  . c  om

        for (int counter = 0; counter < fileChunkLength; counter++) {
            bytes.add(chunk[counter]);
        }
    }

    return "data:image/png;base64," + DatatypeConverter
            .printBase64Binary(ArrayUtils.toPrimitive(bytes.toArray(new Byte[bytes.size()])));
}

From source file:org.ctuning.openme.openme.java

public static JSONObject remote_access(JSONObject i) throws JSONException {
    /*/*from  ww w . j  a  v  a  2 s  . c  o m*/
    Input:  {
      remote_server_url      - remote server URL
      (module_uoa)           - module to run
      (action)               - action to perform
                                  if =='download', prepare entry/file download through Internet
            
      (save_to_file)         - if web_action==download,
                                  save output to this file
            
      (out)                  - if 'json', treat output as json
                                  if 'json_after_text', strip everything before json
                                  if 'txt', output to stdout
            
      ...                    - all other request parameters
            
      //FGG TBD - should add support for proxy
    }
            
    Output: {
      return   - return code = 0 if successful
                                > 0 if error
                                < 0 if warning (rarely used at this moment)
      (error)  - error text, if return > 0
      (stdout) - if out='txt', output there
    }
    */

    // Prepare return object
    JSONObject r = new JSONObject();

    URL u;
    HttpURLConnection c = null;

    // Prepare request
    String x = "";
    String post = "";

    String con = "";

    x = "";
    if (i.has("out"))
        x = (String) i.get("out");
    if (x != null && x != "")
        con = x;

    String url = "";
    if (i.has("remote_server_url")) {
        url = (String) i.get("remote_server_url");
        i.remove("remote_server_url");
    }
    if (url == null || url == "") {
        r.put("return", new Integer(1));
        r.put("error", "'remote_server_url is not defined");
        return r;
    }

    String save_to_file = "";
    if (i.has("save_to_file")) {
        save_to_file = (String) i.get("save_to_file");
        i.remove("save_to_file");
    }

    // Check if data download, not json and convert it to download request
    boolean download = false;

    x = "";
    if (i.has("action")) {
        x = (String) i.get("action");
    }
    if (x == "download" || x == "show") {
        download = true;
        if (post != "")
            post += "&";
        post += "module_uoa=web&action=" + x;

        if (i.has("module_uoa"))
            i.remove("module_uoa");
        if (i.has("out"))
            i.remove("out");
        i.remove("action");
    }

    // Prepare dict to transfer through Internet
    JSONObject ii = new JSONObject();
    ii.put("dict", i);
    JSONObject rx = convert_array_to_uri(ii);
    if ((Integer) rx.get("return") > 0)
        return rx;

    if (post != "")
        post += "&";
    post += "ck_json=" + ((String) rx.get("string"));

    // Prepare URL request
    String s = "";
    try {
        u = new URL(url);
        c = (HttpURLConnection) u.openConnection();

        c.setRequestMethod("POST");
        c.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        c.setRequestProperty("Content-Length", Integer.toString(post.getBytes().length));
        c.setUseCaches(false);
        c.setDoInput(true);
        c.setDoOutput(true);

        //Send request
        DataOutputStream dos = new DataOutputStream(c.getOutputStream());
        dos.writeBytes(post);
        dos.flush();
        dos.close();
    } catch (IOException e) {
        if (c != null)
            c.disconnect();
        r.put("return", new Integer(1));
        r.put("error", "Failed sending request to remote server (" + e.getMessage() + ") ...");
        return r;
    }

    r.put("return", new Integer(0));

    // Check if download, not json!
    if (download) {
        String name = "default_download_name.dat";

        x = "";
        if (i.has("filename")) {
            x = ((String) i.get("filename"));
        }
        if (x != null && x != "") {
            File xf = new File(x);
            name = xf.getName();
        }

        if (save_to_file != null && save_to_file != "")
            name = save_to_file;

        //Reading response in binary and at the same time saving to file
        try {
            //Read response
            DataInputStream dis = new DataInputStream(c.getInputStream());
            DataOutputStream dos = new DataOutputStream(new FileOutputStream(name));

            byte[] buf = new byte[16384];

            int len;

            while ((len = dis.read(buf)) != -1)
                dos.write(buf, 0, len);

            dos.close();
            dis.close();
        } catch (Exception e) {
            if (c != null)
                c.disconnect();

            r.put("return", new Integer(1));
            r.put("error",
                    "Failed reading stream from remote server or writing to file (" + e.getMessage() + ") ...");
            return r;
        }
    } else {
        //Reading response in text
        try {
            //Read response
            InputStream is = c.getInputStream();
            BufferedReader f = new BufferedReader(new InputStreamReader(is));
            StringBuffer ss = new StringBuffer();

            while ((x = f.readLine()) != null) {
                ss.append(x);
                ss.append('\r');
            }

            f.close();
            s = ss.toString();
        } catch (Exception e) {
            if (c != null)
                c.disconnect();

            r.put("return", new Integer(1));
            r.put("error", "Failed reading stream from remote server (" + e.getMessage() + ") ...");
            return r;
        }

        if (con == "json_after_text") {
            String json_sep = "*** ### --- CM JSON SEPARATOR --- ### ***";
            int li = s.lastIndexOf(json_sep);
            if (li >= 0) {
                s = s.substring(li + json_sep.length());
                s = s.trim();
            }
        }

        if (con == "json_after_text" || con == "json")
            r = new JSONObject(s);
        else
            r.put("stdout", s);
    }

    if (c != null)
        c.disconnect();

    return r;
}

From source file:org.openme_ck.openme_ck.java

public static JSONObject remote_access(JSONObject i) {
    /*/*from   ww  w .  java 2s. c o  m*/
    Input:  {
      remote_server_url      - remote server URL
      (module_uoa)           - module to run
      (action)               - action to perform
                                  if =='download', prepare entry/file download through Internet
            
      (save_to_file)         - if web_action==download,
                                  save output to this file
            
      (out)                  - if 'json', treat output as json
                                  if 'json_after_text', strip everything before json
                                  if 'txt', output to stdout
            
      ...                    - all other request parameters
            
      //FGG TBD - should add support for proxy
    }
            
    Output: {
      return   - return code = 0 if successful
                                > 0 if error
                                < 0 if warning (rarely used at this moment)
      (error)  - error text, if return > 0
      (stdout) - if out='txt', output there
    }
    */

    // Prepare return object
    JSONObject r = new JSONObject();

    URL u;
    HttpURLConnection c = null;

    // Prepare request
    String x = "";
    String post = "";

    String con = "";
    x = (String) i.get("out");
    if (x != null && x != "")
        con = x;

    String url = (String) i.get("remote_server_url");
    if (url == null || url == "") {
        r.put("return", new Long(1));
        r.put("error", "'remote_server_url is not defined");
        return r;
    }
    i.remove("remote_server_url");

    String save_to_file = (String) i.get("save_to_file");
    if (save_to_file != null)
        i.remove("save_to_file");

    // Check if data download, not json and convert it to download request
    boolean download = false;

    x = (String) i.get("action");
    if (x == "download" || x == "show") {
        download = true;
        if (post != "")
            post += "&";
        post += "module_uoa=web&action=" + x;
        i.remove("action");

        if (((String) i.get("module_uoa")) != null)
            i.remove("module_uoa");
        if (((String) i.get("out")) != null)
            i.remove("out");
    }

    // Prepare dict to transfer through Internet
    JSONObject ii = new JSONObject();
    ii.put("dict", i);
    JSONObject rx = convert_array_to_uri(ii);
    if ((Long) rx.get("return") > 0)
        return rx;

    if (post != "")
        post += "&";
    post += "ck_json=" + ((String) rx.get("string"));

    // Prepare URL request
    String s = "";
    try {
        //Connect
        u = new URL(url);
        c = (HttpURLConnection) u.openConnection();

        c.setRequestMethod("POST");
        c.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        c.setRequestProperty("Content-Length", Integer.toString(post.getBytes().length));
        c.setUseCaches(false);
        c.setDoInput(true);
        c.setDoOutput(true);

        //Send request
        DataOutputStream dos = new DataOutputStream(c.getOutputStream());
        dos.writeBytes(post);
        dos.flush();
        dos.close();
    } catch (Exception e) {
        if (c != null)
            c.disconnect();

        r.put("return", new Long(1));
        r.put("error", "Failed reading stream from remote server (" + e.getMessage() + ") ...");
        return r;
    }

    r.put("return", new Long(0));

    // Check if download, not json!
    if (download) {
        String name = "default_download_name.dat";

        x = ((String) i.get("filename"));
        if (x != null && x != "") {
            File xf = new File(x);
            name = xf.getName();
        }

        if (save_to_file != null && save_to_file != "")
            name = save_to_file;

        //Reading response in binary and at the same time saving to file
        try {
            //Read response
            DataInputStream dis = new DataInputStream(c.getInputStream());
            DataOutputStream dos = new DataOutputStream(new FileOutputStream(name));

            byte[] buf = new byte[16384];

            int len;

            while ((len = dis.read(buf)) != -1)
                dos.write(buf, 0, len);

            dos.close();
            dis.close();
        } catch (Exception e) {
            if (c != null)
                c.disconnect();

            r.put("return", new Long(1));
            r.put("error",
                    "Failed reading stream from remote server or writing to file (" + e.getMessage() + ") ...");
            return r;
        }
    } else {
        //Reading response in text
        try {
            //Read response
            InputStream is = c.getInputStream();
            BufferedReader f = new BufferedReader(new InputStreamReader(is));
            StringBuffer ss = new StringBuffer();

            while ((x = f.readLine()) != null) {
                ss.append(x);
                ss.append('\r');
            }

            f.close();
            s = ss.toString();
        } catch (Exception e) {
            if (c != null)
                c.disconnect();

            r.put("return", new Long(1));
            r.put("error", "Failed reading stream from remote server (" + e.getMessage() + ") ...");
            return r;
        }

        if (con == "json_after_text") {
            int li = s.lastIndexOf(json_sep);
            if (li >= 0) {
                s = s.substring(li + json_sep.length());

                li = s.lastIndexOf(json_sep2);
                if (li > 0) {
                    s = s.substring(0, li);
                }

                s = s.trim();
            }
        }

        if (con == "json_after_text" || con == "json") {
            //Parsing json
            try {
                JSONParser parser = new JSONParser();
                r = (JSONObject) parser.parse(s);
            } catch (ParseException ex) {
                r.put("return", new Long(1));
                r.put("error", "can't parse json output (" + ex + ") ...");
                return r;
            }
        } else
            r.put("stdout", s);
    }

    if (c != null)
        c.disconnect();

    return r;
}

From source file:isl.FIMS.utils.Utils.java

public static void downloadZip(ServletOutputStream outStream, File file) {
    DataInputStream in = null;
    int BUFSIZE = 8192;

    try {/* ww  w  .  j  a  v a 2  s .  com*/
        byte[] byteBuffer = new byte[BUFSIZE];
        in = new DataInputStream(new FileInputStream(file));
        int bytesRead;
        while ((bytesRead = in.read(byteBuffer)) != -1) {
            outStream.write(byteBuffer, 0, bytesRead);
        }
        in.close();
        outStream.close();
    } catch (IOException ex) {
    } finally {
        try {
            in.close();
        } catch (IOException ex) {
        }
    }
}

From source file:at.tugraz.sss.serv.util.SSFileU.java

public static String readImageToBase64Str(final String filePath, final Integer transmissionSize) throws SSErr {

    try {//from ww w.j a va  2  s  .c  om
        final DataInputStream fileReader = new DataInputStream(new FileInputStream(new File(filePath)));
        final List<Byte> bytes = new ArrayList<>();
        byte[] chunk = new byte[transmissionSize];
        int fileChunkLength;

        while (true) {

            fileChunkLength = fileReader.read(chunk);

            if (fileChunkLength == -1) {
                break;
            }

            for (int counter = 0; counter < fileChunkLength; counter++) {
                bytes.add(chunk[counter]);
            }
        }

        return "data:image/png;base64," + DatatypeConverter
                .printBase64Binary(ArrayUtils.toPrimitive(bytes.toArray(new Byte[bytes.size()])));
    } catch (Exception error) {
        SSServErrReg.regErrThrow(error);
        return null;
    }
}