Java 可序列化对象到字节数组 [英] Java Serializable Object to Byte Array

问题描述

假设我有一个可序列化的类 AppMessage.

Let's say I have a serializable class AppMessage.

我想通过套接字将它作为 byte[] 传输到另一台机器，在那里它从接收到的字节中重建.

I would like to transmit it as byte[] over sockets to another machine where it is rebuilt from the bytes received.

我怎样才能做到这一点?

How could I achieve this?

推荐答案

准备要发送的字节数组:

Prepare the byte array to send:

ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream out = null;
try {
  out = new ObjectOutputStream(bos);   
  out.writeObject(yourObject);
  out.flush();
  byte[] yourBytes = bos.toByteArray();
  ...
} finally {
  try {
    bos.close();
  } catch (IOException ex) {
    // ignore close exception
  }
}

从字节数组创建对象:

ByteArrayInputStream bis = new ByteArrayInputStream(yourBytes);
ObjectInput in = null;
try {
  in = new ObjectInputStream(bis);
  Object o = in.readObject(); 
  ...
} finally {
  try {
    if (in != null) {
      in.close();
    }
  } catch (IOException ex) {
    // ignore close exception
  }
}

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