java Object Compression

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Objects;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

public class ObjectCompressUtils {

  public byte[] compressObject(CollectResult o) throws IOException {
    ObjectOutputStream objectOut = null;
    ByteArrayOutputStream baos = null;
    GZIPOutputStream gzipOut = null;
    try {
      baos = new ByteArrayOutputStream();
      gzipOut = new GZIPOutputStream(baos);
      objectOut = new ObjectOutputStream(gzipOut);
      objectOut.writeObject(o);
    } finally {
      if (Objects.nonNull(objectOut)) {
        objectOut.close();
      }
      if (Objects.nonNull(baos)) {
        baos.close();
      }
      if (Objects.nonNull(gzipOut)) {
        gzipOut.close();
      }
    }
    return baos.toByteArray();
  }

  public T decompressObject(byte[] data) throws IOException, ClassNotFoundException {
    ByteArrayInputStream bais = null;
    GZIPInputStream gzipIn = null;
    ObjectInputStream objectIn = null;
    try {
      bais = new ByteArrayInputStream(data);
      gzipIn = new GZIPInputStream(bais);
      objectIn = new ObjectInputStream(gzipIn);
      return (T) objectIn.readObject();
    } finally {
      if (Objects.nonNull(bais)) {
        bais.close();
      }
      if (Objects.nonNull(gzipIn)) {
        gzipIn.close();
      }
      if (Objects.nonNull(objectIn)) {
        objectIn.close();
      }
    }
  }
}

Class binary를 압축하는 방법에 대해서 고민 하던 도중 위와 같은 방법이 있는걸 확인.

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하지만 몇가지 -_-; 위치에 따라서 발생되는 문제들은 있음.

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https://examples.javacodegeeks.com/core-java/util/zip/compress-objects-example/

Compress Objects example

With this example we are going to demonstrate how to compress and expand an Object. We have implemen…

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