java对象的序列化与反序列化

java对象的序列化与反序列化

 

package com.linusiyu.util;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

@SuppressWarnings("restriction")
public class DataTransferObjectSerializer {

    /**
     * 序列化对象
     */
    public static String serializeObject(Object obj) {
        ObjectOutputStream objOut = null;
        if(obj==null){
            return null;
        }
        try {
            ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
            objOut = new ObjectOutputStream(byteOut);
            objOut.writeObject(obj);
            return new sun.misc.BASE64Encoder().encode(byteOut.toByteArray());
        }
        catch (Exception e) {
            
        }
        finally {
            if (objOut != null) {try {objOut.close();} catch (IOException e) {}}
        }
    }

    /**
     * 反序列化对象
     */
    public static Object deserializeObject(String values) {
        ObjectInputStream objIn = null;
        if(values==null){
            return null;
        }
        try {
            byte[] valueByte = new sun.misc.BASE64Decoder().decodeBuffer(values);
            ByteArrayInputStream byteIn = new ByteArrayInputStream(valueByte);
            objIn = new ObjectInputStream(byteIn);
            return objIn.readObject();
        }
        catch (Exception e) {
            throw new RuntimeException(e.getMessage(),e);
        }
        finally {
            if (objIn != null) {try {objIn.close();} catch(IOException e){}}
        }
    }


    public static void main(String[] args) {
        P obj = new P();
        String objStr = serializeObject(obj);
        System.out.println(objStr);

        P p = (P) deserializeObject(objStr);
        System.out.println(p.getA());
        System.out.println(p.getB());

    }
}

class P implements Serializable{
    private static final long serialVersionUID = 1L;
    private String a = "hello serializable";
    private int b = 5;
    public String getA() {
        return a;
    }
    public int getB() {
        return b;
    }
}