import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.io.Serializable;

import java.util.HashMap;

/**

 * 深拷贝类

 * @author King

 */

public class CloneUtils {

    /**

     * 核心深拷贝方法,其它都是测试方法

     * @param obj

     * @author King

     * @return

     */

    @SuppressWarnings("unchecked")

    public static <T extends Serializable> T clone(T obj) {

        T clonedObj = null;

        try {

            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            ObjectOutputStream oos = new ObjectOutputStream(baos);

            oos.writeObject(obj);

            oos.close();

            ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());

            ObjectInputStream ois = new ObjectInputStream(bais);

            clonedObj = (T) ois.readObject();

            ois.close();

        } catch (Exception e) {

            e.printStackTrace();

        }

        return clonedObj;

    }

    static class Student implements Serializable{

        String id = "";

        String name = "";

        public Student(String id, String name) {

            super();

            this.id = id;

            this.name = name;

        }

        public String getId() {

            return id;

        }

        public void setId(String id) {

            this.id = id;

        }

        public String getName() {

            return name;

        }

        public void setName(String name) {

            this.name = name;

        }

    }

    public static void main(String[] args) {

        HashMap<String ,Student> map1 = new HashMap<String ,Student>();

        Student stu1 = new Student("1","xixi");

        map1.put("stu", stu1);

        HashMap<String ,Student> map2 =  CloneUtils.clone(map1);

        map2.get("stu").setName("bobo");//把新clone的map2中的Student设新值bobo,且它是对象哦

        System.out.println(map1.get("stu").getName());//把旧的map1中的Student拿出来发现还是xixi,这说明深拷贝成功

    }

}

package com.testdemo.pcis.isc.redis;

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.util.HashMap;

import java.util.Map;

/**

 * 序列化对象工具类.

 * 参考网址:http://alanland.iteye.com/blog/1600685

 * @author King

 *

 */

public class SerializeUtil {

    public static byte[] serialize(Object object) {

        ObjectOutputStream oos = null;

        ByteArrayOutputStream baos = null;

        try {

            // 序列化

            baos = new ByteArrayOutputStream();

            oos = new ObjectOutputStream(baos);

            oos.writeObject(object);

            byte[] bytes = baos.toByteArray();

            return bytes;

        } catch (Exception e) {

            e.printStackTrace();

        }finally{

            try {

                oos.close();

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

        return null;

    }

    public static Object unserialize(byte[] bytes) {

        ByteArrayInputStream bais = null;

        ObjectInputStream ois = null;

        try {

            // 反序列化

            bais = new ByteArrayInputStream(bytes);

            ois = new ObjectInputStream(bais);

            return ois.readObject();

        } catch (Exception e) {

            e.printStackTrace();

        }finally{

            try {

                ois.close();

            } catch (IOException e) {

                e.printStackTrace();

                System.out.println("bytes.length"+bytes.length);

            }

        }

        return null;

    }

    public static void main(String[] args) {

        Map<String,String> hashMap = new HashMap<String,String>();

        hashMap.put("a","b");

        byte[] bs = SerializeUtil.serialize(hashMap);

        @SuppressWarnings("unchecked")

        Map<String,String> deepCopyMap =(Map<String,String>) SerializeUtil.unserialize(bs);

        System.out.println(deepCopyMap);

    }

}