Example usage for java.util.zip DeflaterOutputStream DeflaterOutputStream

Introduction

In this page you can find the example usage for java.util.zip DeflaterOutputStream DeflaterOutputStream.

Prototype

public DeflaterOutputStream(OutputStream out, boolean syncFlush) 

Source Link

Document

Creates a new output stream with a default compressor, a default buffer size and the specified flush mode.

Usage

From source file:Main.java

public static String compressString(String str, String encoding) {
    String compressedString = "";

    try {/*  ww w  . j a v a 2 s.co  m*/
        byte[] input = str.getBytes(encoding);
        Deflater d = new Deflater();
        d.setLevel(Deflater.BEST_COMPRESSION);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        DeflaterOutputStream dout = new DeflaterOutputStream(out, d);
        dout.write(input);
        dout.close();
        compressedString = new String(Hex.encodeHex(out.toByteArray()));
    } catch (Exception e) {
        e.printStackTrace();
    }

    return compressedString;
}

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From source file:zipB64.java

protected static String encodeMessage(String messageStr) {
    try {// w  w  w . j a  v  a 2 s .co m
        ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
        Deflater deflater = new Deflater(Deflater.DEFLATED);
        DeflaterOutputStream deflaterStream = new DeflaterOutputStream(bytesOut, deflater);
        deflaterStream.write(messageStr.getBytes("UTF-8"));
        deflaterStream.finish();

        Base64 b = new Base64(-1);
        return new String(b.encode(bytesOut.toByteArray()));
    } catch (Exception e) {
        return "crotte";
    }
}

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From source file:com.barrybecker4.common.util.Base64Codec.java

/**
 * take a String and compress it./*from w  w  w . j a va2s  .  c  om*/
 * See @decompress for reversing the compression.
 * @param data a string to compress.
 * @return compressed string representation.
 */
public static synchronized String compress(final String data) {

    ByteArrayOutputStream byteOut = new ByteArrayOutputStream(512);
    Deflater deflater = new Deflater();
    DeflaterOutputStream oStream = new DeflaterOutputStream(byteOut, deflater);

    try {
        oStream.write(data.getBytes(CONVERTER_UTF8));
        oStream.flush();
        oStream.close();
    } catch (UnsupportedEncodingException e) {
        throw new IllegalArgumentException("Unsupported encoding exception :" + e.getMessage(), e);
    } catch (IOException e) {
        throw new IllegalStateException("io error :" + e.getMessage(), e);
    }

    return new String(Base64.encodeBase64(byteOut.toByteArray()));
}

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From source file:Main.java

/**
 * Creates a SyncFlush output stream, even if the current device does not support doing so
 * natively.//w  ww .j  a va2s  .  c  o  m
 *
 * @param rawOut the raw output stream to be wrapped
 * @return The wrapping output stream
 */
@NonNull
public static DeflaterOutputStream createDeflaterOutputStream(@Nullable OutputStream rawOut) {
    if (deviceSupportsCompression())
        return new DeflaterOutputStream(rawOut, true);
    else
        return new DeflaterOutputStream(rawOut, createSyncFlushDeflater());
}

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From source file:com.hundsun.jresplus.web.nosession.cookie.HessianZipSerializer.java

public static byte[] encode(Object object) throws SerializationException {
    if (object == null) {
        return null;
    }/*from w w w . j a v  a2 s .  c o  m*/
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    Deflater def = new Deflater(Deflater.BEST_COMPRESSION, false);
    DeflaterOutputStream dos = new DeflaterOutputStream(baos, def);

    Hessian2Output ho = null;

    try {
        ho = new Hessian2Output(dos);
        ho.writeObject(object);
    } catch (Exception e) {
        throw new SerializationException("Failed to encode date", e);
    } finally {
        if (ho != null) {
            try {
                ho.close();
            } catch (IOException e) {
            }
        }
        try {
            dos.close();
        } catch (IOException e) {
        }

        def.end();
    }

    return baos.toByteArray();
}

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From source file:org.apache.pig.impl.util.ObjectSerializer.java

public static String serialize(Serializable obj) throws IOException {
    if (obj == null)
        return "";
    try {/*from  w ww  .j ava  2 s . c o m*/
        ByteArrayOutputStream serialObj = new ByteArrayOutputStream();
        Deflater def = new Deflater(Deflater.BEST_COMPRESSION);
        ObjectOutputStream objStream = new ObjectOutputStream(new DeflaterOutputStream(serialObj, def));
        objStream.writeObject(obj);
        objStream.close();
        return encodeBytes(serialObj.toByteArray());
    } catch (Exception e) {
        throw new IOException("Serialization error: " + e.getMessage(), e);
    }
}

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From source file:org.openmrs.module.shr.contenthandler.api.ContentTest.java

private static byte[] compressDeflate(String content) throws IOException {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    DeflaterOutputStream deflateOut = new DeflaterOutputStream(out, new Deflater(0, true));
    deflateOut.write(content.getBytes());
    IOUtils.closeQuietly(deflateOut);/*w  ww .  ja v a 2  s  .com*/
    return out.toByteArray();
}

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From source file:rascal.storage.loose.LooseStorageNodeWritableChannel.java

private void initTempObjectFileChannel() throws IOException {
    Deflater deflater = new Deflater(storageConfiguration.getLooseCompressionLevel());
    DeflaterOutputStream output = new DeflaterOutputStream(new FileOutputStream(tempObjectFile), deflater);
    tempObjectFileChannel = Channels.newChannel(output);
}

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From source file:rascal.storage.loose.AbstractLooseStorageNodeChannelIntegrationTest.java

@Before
public void setUpTestData() throws IOException {
    testData = RandomTestDataUtils.createRandomData();
    ByteArrayOutputStream outBuffer = new ByteArrayOutputStream();
    DeflaterOutputStream out = new DeflaterOutputStream(outBuffer, new Deflater(DEFLATED_DATA_COMPRESS_LEVER));
    out.write(testData);/* ww  w . ja v  a 2 s.c  o m*/
    out.close();
    deflatedTestData = outBuffer.toByteArray();
}

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From source file:org.apache.tez.common.TezUtils.java

/**
 * Convert a Configuration to compressed ByteString using Protocol buffer
 *
 * @param conf/* w  w  w  .j  av  a2 s .com*/
 *          : Configuration to be converted
 * @return PB ByteString (compressed)
 * @throws java.io.IOException
 */
public static ByteString createByteStringFromConf(Configuration conf) throws IOException {
    Preconditions.checkNotNull(conf, "Configuration must be specified");
    ByteString.Output os = ByteString.newOutput();
    DeflaterOutputStream compressOs = new DeflaterOutputStream(os, new Deflater(Deflater.BEST_SPEED));
    try {
        writeConfInPB(compressOs, conf);
    } finally {
        if (compressOs != null) {
            compressOs.close();
        }
    }
    return os.toByteString();
}

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