【学习笔记】object2byte，byte2object

Java对象与字节流转换

最新推荐文章于 2024-06-05 06:00:00 发布

Viking_gf

最新推荐文章于 2024-06-05 06:00:00 发布

阅读量673

点赞数

学习笔记专栏收录该内容

34 篇文章

订阅专栏

本文介绍如何在Java中将对象转换为字节流，包括对象转数组和数组转对象的方法，通过实例演示实现过程。

package com.digican.utils;

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

import com.digican.javabean.TestBean;

public class ObjectAndByte {

	/**
	 * 对象转数组
	 * @param obj
	 * @return
	 */
	public byte[] toByteArray (Object obj) {   
		byte[] bytes = null;   
		ByteArrayOutputStream bos = new ByteArrayOutputStream();   
		try {     
			ObjectOutputStream oos = new ObjectOutputStream(bos);      
			oos.writeObject(obj);     
			oos.flush();      
			bytes = bos.toByteArray ();   
			oos.close();      
			bos.close();     
		} catch (IOException ex) {     
			ex.printStackTrace();
		}   
		return bytes; 
	}
	
	/**
	 * 数组转对象
	 * @param bytes
	 * @return
	 */
	public Object toObject (byte[] bytes) {   
		Object obj = null;   
		try {     
			ByteArrayInputStream bis = new ByteArrayInputStream (bytes);     
			ObjectInputStream ois = new ObjectInputStream (bis);     
			obj = ois.readObject();   
			ois.close();
			bis.close();
		} catch (IOException ex) {     
			ex.printStackTrace();
		} catch (ClassNotFoundException ex) {     
			ex.printStackTrace();
		}   
		return obj; 
	}
	
	public static void main(String[] args) {
		TestBean tb = new TestBean();
		tb.setName("daqing");
		tb.setValue("1234567890");
		
		ObjectAndByte oa = new ObjectAndByte();
		byte[] b = oa.toByteArray(tb);
		System.out.println(new String(b));
		
		System.out.println("=======================================");
		
		TestBean teb = (TestBean) oa.toObject(b);
		System.out.println(teb.getName());
		System.out.println(teb.getValue());
	}

}