Use java gzip to compress input content - Java java.lang

Java examples for java.lang:byte Array Compress

  1. HOME
  2. Java
  3. java.lang
  4. byte Array Compress

Description

Use java gzip to compress input content

Demo Code


import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
import java.util.zip.InflaterInputStream;
import org.apache.log4j.Logger;

public class Main{
    public static void main(String[] argv) throws Exception{
        byte[] content = new byte[]{34,35,36,37,37,37,67,68,69};
        System.out.println(java.util.Arrays.toString(gzip(content)));
    }/*w ww  .j  av  a2 s.  co m*/
    /**
     * Log4j logger
     */
    static Logger logger = Logger.getLogger(CompressUtil.class);
    /**
     * Use java gzip to compress input content
     * 
     * @param content
     * @return null if IOException occurs
     */
    public static byte[] gzip(byte[] content) {
        byte[] compressedContent = null;
        if (content == null)
            return compressedContent;
        ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
        try {
            GZIPOutputStream gzipStream = new GZIPOutputStream(baos);
            gzipStream.write(content, 0, content.length);
            gzipStream.flush();
            gzipStream.finish();
            compressedContent = baos.toByteArray();

            gzipStream.close();
            baos.close();
        } catch (IOException e) {
            logger.warn("gzip error: " + e.getMessage(), e);
        }
        return compressedContent;
    }
}

Related Tutorials