/**

 * Created by Administrator on 2016/11/23.

 */

public class test {

    public static void  main(String[] args){

            List<model> list = new ArrayList<>();

            for(int i=0;i<100;i++){

                list.add(new model(1,"ss"));

            }

            HashMap<String,Object> map = new HashMap<String,Object>();

            //放基本类型数据

            map.put("basic", 100);

            //放对象

            map.put("list", list);

            HashMap<String,Object> mapNew = new HashMap<String,Object>();

            HashMap<String,Object> mapNew2 = new HashMap<String,Object>();

            mapNew.putAll(map);

            Long starttime =System.currentTimeMillis();

            mapNew = CloneUtils.clone(map);

            Long endtime =System.currentTimeMillis();

            System.out.println("使用字节复制所需时间："+(endtime-starttime));

            //System.out.println(mapNew);

            System.out.println("---------");

            starttime =System.currentTimeMillis();

            String  jsonstr = JSON.toJSONString(map);

            mapNew2 = JSON.parseObject(jsonstr,mapNew2.getClass());

            endtime =System.currentTimeMillis();

            System.out.print("使用json复制所需时间："+(endtime-starttime));

            //System.out.println(mapNew2);

    }

}

/**

 * Created by Administrator on 2016/11/23.

 */

public class CloneUtils {

    @SuppressWarnings("unchecked")

    public static <T> 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;

    }

}

/**

 * Created by Administrator on 2016/11/23.

 */

public class model {

    private  int id;

    private String name;

    public model(){

    }

    public model(int id, String name) {

        this.id = id;

        this.name = name;

    }

    public int getId() {

        return id;

    }

    public void setId(int id) {

        this.id = id;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    @Override

    public String toString() {

        return "{'id':"+this.id+",'name':'"+this.name+"'}";

    }

}