com.hundsun.jresplus.web.nosession.cookie.HessianZipSerializer.java Source code

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Here is the source code for com.hundsun.jresplus.web.nosession.cookie.HessianZipSerializer.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hundsun.jresplus.web.nosession.cookie;

import java.io.IOException;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.Inflater;
import java.util.zip.InflaterInputStream;

import org.apache.commons.lang.SerializationException;

import com.caucho.hessian.io.Hessian2Input;
import com.caucho.hessian.io.Hessian2Output;
import com.hundsun.jresplus.common.util.io.ByteArrayInputStream;
import com.hundsun.jresplus.common.util.io.ByteArrayOutputStream;

public class HessianZipSerializer {
    public static byte[] encode(Object object) throws SerializationException {
        if (object == null) {
            return null;
        }
        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        Deflater def = new Deflater(Deflater.BEST_COMPRESSION, false);
        DeflaterOutputStream dos = new DeflaterOutputStream(baos, def);

        Hessian2Output ho = null;

        try {
            ho = new Hessian2Output(dos);
            ho.writeObject(object);
        } catch (Exception e) {
            throw new SerializationException("Failed to encode date", e);
        } finally {
            if (ho != null) {
                try {
                    ho.close();
                } catch (IOException e) {
                }
            }
            try {
                dos.close();
            } catch (IOException e) {
            }

            def.end();
        }

        return baos.toByteArray();
    }

    public static Object decode(byte[] encodedValue) throws SerializationException {
        ByteArrayInputStream bais = new ByteArrayInputStream(encodedValue);
        Inflater inf = new Inflater(false);
        InflaterInputStream iis = new InflaterInputStream(bais, inf);
        Hessian2Input hi = null;
        try {
            hi = new Hessian2Input(iis);
            return hi.readObject();
        } catch (Exception e) {
            throw new SerializationException("Failed to parse data", e);
        } finally {
            if (hi != null) {
                try {
                    hi.close();
                } catch (IOException e) {
                }
            }
            try {
                iis.close();
            } catch (IOException e) {
            }
            inf.end();
        }
    }
}