Example usage for java.io OutputStream flush

Introduction

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

Prototype

public void flush() throws IOException 

Source Link

Document

Flushes this output stream and forces any buffered output bytes to be written out.

Usage

From source file:Streams.java

/**
 * Copies the contents of the given {@link InputStream}
 * to the given {@link OutputStream}./*ww  w .ja v  a 2s .c o m*/
 * @param pIn The input stream, which is being read.
 *   It is guaranteed, that {@link InputStream#close()} is called
 *   on the stream.
 * @param pOut The output stream, to which data should
 *   be written. May be null, in which case the input streams
 *   contents are simply discarded.
 * @param pClose True guarantees, that {@link OutputStream#close()}
 *   is called on the stream. False indicates, that only
 *   {@link OutputStream#flush()} should be called finally.
 * @param pBuffer Temporary buffer, which is to be used for
 *   copying data.
 * @return Number of bytes, which have been copied.
 * @throws IOException An I/O error occurred.
 */
public static long copy(InputStream pIn, OutputStream pOut, boolean pClose, byte[] pBuffer) throws IOException {
    OutputStream out = pOut;
    InputStream in = pIn;
    try {
        long total = 0;
        for (;;) {
            int res = in.read(pBuffer);
            if (res == -1) {
                break;
            }
            if (res > 0) {
                total += res;
                if (out != null) {
                    out.write(pBuffer, 0, res);
                }
            }
        }
        if (out != null) {
            if (pClose) {
                out.close();
            } else {
                out.flush();
            }
            out = null;
        }
        in.close();
        in = null;
        return total;
    } finally {
        if (in != null) {
            try {
                in.close();
            } catch (Throwable t) {
                /* Ignore me */
            }
        }
        if (pClose && out != null) {
            try {
                out.close();
            } catch (Throwable t) {
                /* Ignore me */
            }
        }
    }
}

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From source file:dk.netarkivet.common.utils.StreamUtils.java

/**
 * Write document tree to stream. Note, the stream is flushed, but not
 * closed.// ww  w  .j  a va  2  s.co m
 *
 * @param doc the document tree to save.
 * @param os the stream to write xml to
 * @throws IOFailure On trouble writing XML to stream.
 */
public static void writeXmlToStream(Document doc, OutputStream os) {
    ArgumentNotValid.checkNotNull(doc, "Document doc");
    ArgumentNotValid.checkNotNull(doc, "OutputStream os");
    XMLWriter xwriter = null;
    try {
        try {
            OutputFormat format = OutputFormat.createPrettyPrint();
            format.setEncoding(UTF8_CHARSET);
            xwriter = new XMLWriter(os, format);
            xwriter.write(doc);
        } finally {
            if (xwriter != null) {
                xwriter.close();
            }
            os.flush();
        }
    } catch (IOException e) {
        String errMsg = "Unable to write XML to stream";
        log.warn(errMsg, e);
        throw new IOFailure(errMsg, e);
    }
}

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From source file:Main.java

public static String customrequest(String url, HashMap<String, String> params, String method) {
    try {//w ww.  jav a2s .com

        URL postUrl = new URL(url);
        HttpURLConnection conn = (HttpURLConnection) postUrl.openConnection();
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setConnectTimeout(5 * 1000);

        conn.setRequestMethod(method);
        conn.setUseCaches(false);
        conn.setInstanceFollowRedirects(true);
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows XP; DigExt)");

        conn.connect();
        OutputStream out = conn.getOutputStream();
        StringBuilder sb = new StringBuilder();
        if (null != params) {
            int i = params.size();
            for (Map.Entry<String, String> entry : params.entrySet()) {
                if (i == 1) {
                    sb.append(entry.getKey() + "=" + entry.getValue());
                } else {
                    sb.append(entry.getKey() + "=" + entry.getValue() + "&");
                }

                i--;
            }
        }
        String content = sb.toString();
        out.write(content.getBytes("UTF-8"));
        out.flush();
        out.close();
        InputStream inStream = conn.getInputStream();
        String result = inputStream2String(inStream);
        conn.disconnect();
        return result;
    } catch (Exception e) {
        // TODO: handle exception
    }
    return null;
}

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From source file:com.xqdev.jam.MLJAM.java

private static void sendBinaryResponse(HttpServletResponse res, byte[] bytes) throws IOException {
    res.setContentType("application/binary-encoded");
    OutputStream out = res.getOutputStream(); // care to handle errors later?
    out.write(bytes);/*from www. j  a v  a 2  s. c om*/
    out.flush();
}

---

From source file:com.microsoft.azure.hdinsight.common.StreamUtil.java

public static File getResourceFile(String resource) throws IOException {
    File file = null;//from   w  w  w .jav a  2  s.c  o m
    URL res = streamUtil.getClass().getResource(resource);

    if (res.toString().startsWith("jar:")) {
        InputStream input = null;
        OutputStream out = null;

        try {
            input = streamUtil.getClass().getResourceAsStream(resource);
            file = File.createTempFile(String.valueOf(new Date().getTime()), ".tmp");
            out = new FileOutputStream(file);

            int read;
            byte[] bytes = new byte[1024];

            while ((read = input.read(bytes)) != -1) {
                out.write(bytes, 0, read);
            }
        } finally {
            if (input != null) {
                input.close();
            }

            if (out != null) {
                out.flush();
                out.close();
            }

            if (file != null) {
                file.deleteOnExit();
            }
        }

    } else {
        file = new File(res.getFile());
    }

    return file;
}

---

From source file:com.openkm.util.PDFUtils.java

/**
 * Merge several PDFs into a new one//  w  ww.  j a v  a 2s . c o m
 */
public static void merge(List<InputStream> inputs, OutputStream output) throws IOException, DocumentException {
    Document document = new Document();

    try {
        PdfSmartCopy copy = new PdfSmartCopy(document, output);
        document.open();

        for (InputStream is : inputs) {
            PdfReader reader = new PdfReader(is);

            for (int i = 1; i <= reader.getNumberOfPages(); i++) {
                copy.addPage(copy.getImportedPage(reader, i));
            }
        }

        output.flush();
        document.close();
    } finally {
        IOUtils.closeQuietly(output);
    }
}

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From source file:eu.scape_project.planning.xml.ProjectExportAction.java

/**
 * Dumps binary data to provided file. It results in an XML file with a
 * single element: data.// ww  w .j  av a2s . c o  m
 * 
 * @param id
 * @param data
 * @param f
 * @param encoder
 * @throws IOException
 */
private static void writeBinaryData(int id, InputStream data, File f) throws IOException {

    XMLOutputFactory factory = XMLOutputFactory.newInstance();
    try {
        XMLStreamWriter writer = factory.createXMLStreamWriter(new FileWriter(f));

        writer.writeStartDocument(PlanXMLConstants.ENCODING, "1.0");
        writer.writeStartElement("data");
        writer.writeAttribute("id", "" + id);

        Base64InputStream base64EncodingIn = new Base64InputStream(data, true,
                PlanXMLConstants.BASE64_LINE_LENGTH, PlanXMLConstants.BASE64_LINE_BREAK);

        OutputStream out = new WriterOutputStream(new XMLStreamContentWriter(writer),
                PlanXMLConstants.ENCODING);
        // read the binary data and encode it on the fly
        IOUtils.copy(base64EncodingIn, out);
        out.flush();

        // all data is written - end 
        writer.writeEndElement();
        writer.writeEndDocument();

        writer.flush();
        writer.close();

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

---

From source file:com.iStudy.Study.Renren.Util.java

private static HttpURLConnection sendFormdata(String reqUrl, Bundle parameters, String fileParamName,
        String filename, String contentType, byte[] data) {
    HttpURLConnection urlConn = null;
    try {/*from w  ww  .j a  va 2  s.  c om*/
        URL url = new URL(reqUrl);
        urlConn = (HttpURLConnection) url.openConnection();
        urlConn.setRequestMethod("POST");
        urlConn.setConnectTimeout(5000);// ??jdk
        urlConn.setReadTimeout(5000);// ??jdk 1.5??,?
        urlConn.setDoOutput(true);

        urlConn.setRequestProperty("connection", "keep-alive");

        String boundary = "-----------------------------114975832116442893661388290519"; // 
        urlConn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);

        boundary = "--" + boundary;
        StringBuffer params = new StringBuffer();
        if (parameters != null) {
            for (Iterator<String> iter = parameters.keySet().iterator(); iter.hasNext();) {
                String name = iter.next();
                String value = parameters.getString(name);
                params.append(boundary + "\r\n");
                params.append("Content-Disposition: form-data; name=\"" + name + "\"\r\n\r\n");
                // params.append(URLEncoder.encode(value, "UTF-8"));
                params.append(value);
                params.append("\r\n");
            }
        }

        StringBuilder sb = new StringBuilder();
        sb.append(boundary);
        sb.append("\r\n");
        sb.append("Content-Disposition: form-data; name=\"" + fileParamName + "\"; filename=\"" + filename
                + "\"\r\n");
        sb.append("Content-Type: " + contentType + "\r\n\r\n");
        byte[] fileDiv = sb.toString().getBytes();
        byte[] endData = ("\r\n" + boundary + "--\r\n").getBytes();
        byte[] ps = params.toString().getBytes();

        OutputStream os = urlConn.getOutputStream();
        os.write(ps);
        os.write(fileDiv);
        os.write(data);
        os.write(endData);

        os.flush();
        os.close();
    } catch (Exception e) {
        throw new RuntimeException(e.getMessage(), e);
    }
    return urlConn;
}

---

From source file:TripleDES.java

/**
 * Use the specified TripleDES key to decrypt bytes ready from the input
 * stream and write them to the output stream. This method uses uses Cipher
 * directly to show how it can be done without CipherInputStream and
 * CipherOutputStream.//from ww  w .j  a  v a 2  s  . c o  m
 */
public static void decrypt(SecretKey key, InputStream in, OutputStream out)
        throws NoSuchAlgorithmException, InvalidKeyException, IOException, IllegalBlockSizeException,
        NoSuchPaddingException, BadPaddingException {
    // Create and initialize the decryption engine
    Cipher cipher = Cipher.getInstance("DESede");
    cipher.init(Cipher.DECRYPT_MODE, key);

    // Read bytes, decrypt, and write them out.
    byte[] buffer = new byte[2048];
    int bytesRead;
    while ((bytesRead = in.read(buffer)) != -1) {
        out.write(cipher.update(buffer, 0, bytesRead));
    }

    // Write out the final bunch of decrypted bytes
    out.write(cipher.doFinal());
    out.flush();
}

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From source file:com.siahmsoft.soundroid.sdk7.util.ImageUtilities.java

/**
 * Loads an image from the specified URL with the specified cookie.
 *
 * @param url The URL of the image to load.
 * @param cookie The cookie to use to load the image.
 *
 * @return The image at the specified URL or null if an error occured.
 *//*www.j  a  va 2s .c o m*/
public static ExpiringBitmap load(String url, String cookie) {
    ExpiringBitmap expiring = new ExpiringBitmap();

    final HttpGet get = new HttpGet(url);
    if (cookie != null) {
        get.setHeader("cookie", cookie);
    }

    HttpEntity entity = null;
    try {
        final HttpResponse response = HttpManager.execute(get);
        if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
            setLastModified(expiring, response);

            entity = response.getEntity();

            InputStream in = null;
            OutputStream out = null;

            try {
                in = entity.getContent();
                if (FLAG_DECODE_BITMAP_WITH_SKIA) {
                    expiring.bitmap = BitmapFactory.decodeStream(in);
                } else {
                    final ByteArrayOutputStream dataStream = new ByteArrayOutputStream();
                    out = new BufferedOutputStream(dataStream, IOUtilities.IO_BUFFER_SIZE);
                    IOUtilities.copy(in, out);
                    out.flush();

                    final byte[] data = dataStream.toByteArray();
                    expiring.bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
                }
            } catch (IOException e) {
                android.util.Log.e(LOG_TAG, "Could not load image from " + url, e);
            } finally {
                IOUtilities.closeStream(in);
                IOUtilities.closeStream(out);
            }
        }
    } catch (IOException e) {
        android.util.Log.e(LOG_TAG, "Could not load image from " + url, e);
    } finally {
        if (entity != null) {
            try {
                entity.consumeContent();
            } catch (IOException e) {
                android.util.Log.e(LOG_TAG, "Could not load image from " + url, e);
            }
        }
    }

    return expiring;
}

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