org.aoju.bus.extra.effect.provider.DeflaterProvider Maven / Gradle / Ivy
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package org.aoju.bus.extra.effect.provider;
import org.aoju.bus.extra.effect.EffectProvider;
import java.io.ByteArrayOutputStream;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;
/**
* 基于deflater算法的数据解压缩
*
* @author Kimi Liu
* @version 6.2.2
* @since JDK 1.8+
*/
public class DeflaterProvider implements EffectProvider {
@Override
public byte[] compress(byte[] data) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
Deflater compressor = new Deflater(1);
try {
compressor.setInput(data);
compressor.finish();
final byte[] buf = new byte[2048];
while (!compressor.finished()) {
int count = compressor.deflate(buf);
bos.write(buf, 0, count);
}
} finally {
compressor.end();
}
return bos.toByteArray();
}
@Override
public byte[] uncompress(byte[] data) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
Inflater decompressor = new Inflater();
try {
decompressor.setInput(data);
final byte[] buf = new byte[2048];
while (!decompressor.finished()) {
int count = decompressor.inflate(buf);
bos.write(buf, 0, count);
}
} catch (DataFormatException e) {
e.printStackTrace();
} finally {
decompressor.end();
}
return bos.toByteArray();
}
}