org.aoju.bus.extra.effect.provider.GzipProvider Maven / Gradle / Ivy
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package org.aoju.bus.extra.effect.provider;
import org.aoju.bus.extra.effect.EffectProvider;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
/**
* 基于gzip算法的数据解压缩
*
* @author Kimi Liu
* @version 6.2.2
* @since JDK 1.8+
*/
public class GzipProvider implements EffectProvider {
@Override
public byte[] compress(byte[] data) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
GZIPOutputStream gzip;
try {
gzip = new GZIPOutputStream(out);
gzip.write(data);
gzip.close();
} catch (IOException e) {
e.printStackTrace();
}
return out.toByteArray();
}
@Override
public byte[] uncompress(byte[] data) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
ByteArrayInputStream in = new ByteArrayInputStream(data);
try {
GZIPInputStream ungzip = new GZIPInputStream(in);
byte[] buffer = new byte[2048];
int n;
while ((n = ungzip.read(buffer)) >= 0) {
out.write(buffer, 0, n);
}
} catch (IOException e) {
e.printStackTrace();
}
return out.toByteArray();
}
}