Example usage for com.google.common.hash HashingInputStream close

Introduction

In this page you can find the example usage for com.google.common.hash HashingInputStream close.

Prototype

public void close() throws IOException 

Source Link

Document

Closes this input stream and releases any system resources associated with the stream.

Usage

From source file:org.swiftexplorer.util.FileUtils.java

public static String readAllAndgetMD5(InputStream in) throws IOException {
    com.google.common.hash.HashingInputStream his = null;
    try {/*from  w  ww  .ja va  2 s  .c  o  m*/
        his = new com.google.common.hash.HashingInputStream(Hashing.md5(), in);

        final int bufferSize = 2097152;
        final ReadableByteChannel inputChannel = Channels.newChannel(his);
        final ByteBuffer buffer = ByteBuffer.allocateDirect(bufferSize);
        while (inputChannel.read(buffer) != -1) {
            buffer.clear();
        }
        /*
        byte[] bytesBuffer = new byte[bufferSize] ;
        int r = his.read(bytesBuffer, 0, bufferSize) ;
        while (r != -1)
           r = his.read(bytesBuffer) ;
        */
        HashCode hc = his.hash();
        return (hc != null) ? (hc.toString()) : (null);
    } finally {
        if (his != null)
            his.close();
    }
}

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