オブジェクトをテキストにシリアライズ

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.zip.GZIPInputStream;

import java.util.zip.GZIPOutputStream;
import org.apache.commons.codec.binary.Base64;
public class Serializer {
    public static String serialize(Serializable obj) throws IOException {

        ByteArrayOutputStream bout = new ByteArrayOutputStream();

        GZIPOutputStream gzipout = new GZIPOutputStream(bout);

        ObjectOutputStream objout = new ObjectOutputStream(gzipout);

        objout.writeObject(obj);

        objout.flush();

        gzipout.finish();

        return new String(Base64.encodeBase64(bout.toByteArray()));

    }
    public static Object unserialize(String encoded) throws IOException,

            ClassNotFoundException {

        byte[] src = Base64.decodeBase64(encoded.getBytes());

        ByteArrayInputStream bin = new ByteArrayInputStream(src);

        GZIPInputStream gzipin = new GZIPInputStream(bin, src.length);

        ObjectInputStream objin = new ObjectInputStream(gzipin);

        return objin.readObject();

    }
}