Java中如何将对象转换为字节码Bytes

首先，随便创建一个类 test ，内容如下

package com.company;
import java.io.Serializable;

public class test implements Serializable {
    public String hello(){
        return "hello,word!";
    }
}

然后创建 bytestoarrey 类，内容如下

package com.company;

import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class bytestoarrey implements Serializable {
    public static void main(String[] args) throws Exception {
        test t = new test();
        byte[] bufobject = getBytesFromObject(t);
        for(int i=0 ; i<bufobject.length ; i++) {
            System.out.print(bufobject[i] + ",");
        }
    }
    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();
    }
}

运行结果如下：