首先，创建要转换的类 test ，内容如下。注意，该类一定要实现序列化

package com.company;
import java.io.Serializable;
public class test implements Serializable {
    String name="test";
    public String example(){
        return "hello,word!";
    }
}

然后创建 object_array 类，内容如下

package com.company;
import java.io.*;
public class object_array   {
    public static void main(String[] args) throws Exception {
        test t =new test();
        System.out.print ( "java class对象转换为字节数组：\n" );
        byte[] bufobject = getBytesFromObject(t);
        for(int i=0 ; i<bufobject.length ; i++) {
            System.out.print(bufobject[i] + ",");
        }
        System.out.println ("\n");
        System.out.print ("字节数组还原对象：\n");
        Object object1 = null;
        object1=deserialize(bufobject);
        test t1 =(test)object1;
        System.out.println ("调用对象的成员变量："+t1.name);
        System.out.println ("调用对象的成员函数："+t1.example());
    }
    public static byte[] getBytesFromObject(Serializable obj) throws Exception {
        if (obj == null) {
            return null;
        }
        ByteArrayOutputStream bo = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(bo);
        oos.writeObject(obj);
        return bo.toByteArray();
    }
    public static Object deserialize(byte[] bytes) {
        Object object = null;
        try {
            ByteArrayInputStream bis = new ByteArrayInputStream(bytes);//
            ObjectInputStream ois = new ObjectInputStream(bis);
            object = ois.readObject();
            ois.close();
            bis.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        }
        return object;
    }
}

运行结果如下：

Java中对象和字节数组互转_java

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