使用reactor修改以下代码：private void handleSocketChannel socketChannel try ByteBuffer buffer = ByteBufferallocate2048; socketChannelreadbuffer; bufferflip; recvString = new Stringbufferarray; String respons

使用reactor模式重构后的代码如下：

private void handle(SocketChannel socketChannel) { try { SelectionKey key = socketChannel.register(selector, SelectionKey.OP_READ); key.attach(new SocketAttachment(socketChannel)); } catch (ClosedChannelException e) { System.out.println(ExceptionUtil.getBriefExceptionStackTrace(e)); } }

public void handleRead(SelectionKey key) { SocketAttachment attachment = (SocketAttachment) key.attachment(); SocketChannel socketChannel = attachment.getSocketChannel(); try { ByteBuffer buffer = ByteBuffer.allocate(2048); socketChannel.read(buffer); buffer.flip(); attachment.setRecvString(new String(buffer.array())); String responseJsonBody = ""; if (attachment.getRecvString() != null) { try { responseJsonBody = attachment.getRecvString().substring(attachment.getRecvString().lastIndexOf("\n")); } catch (Exception e) { System.out.println("get responseJsonBody fail."); } } String sendString="HTTP/1.1 200 OK\r\n" + "\r\n" ; ByteBuffer buf = ByteBuffer.allocateDirect(1024); buf.put(sendString.getBytes()); buf.flip(); attachment.setSendBuffer(buf); key.interestOps(SelectionKey.OP_WRITE); System.out.print("simplehttpserver.java 接收到平台推送的第" + msgCnt + "消息 :"); System.out.println(responseJsonBody); msgCnt++; System.out.println(); /** * string转json.调用推送数据处理方法 */ try { Message sendMsg = new Message("DemoTopic", "DemoTag", responseJsonBody.getBytes()); DefaultMQProducer defaultMQProducer = SpringUtils.getBean("producer"); // 默认3秒超时 SendResult sendResult = defaultMQProducer.send(sendMsg); } catch (Exception e) { e.printStackTrace(); } } catch (IOException e) { System.out.println(ExceptionUtil.getBriefExceptionStackTrace(e)); } }

public void handleWrite(SelectionKey key) { SocketAttachment attachment = (SocketAttachment) key.attachment(); SocketChannel socketChannel = attachment.getSocketChannel(); ByteBuffer buffer = attachment.getSendBuffer(); try { socketChannel.write(buffer); if (buffer.remaining() > 0) { // 写入未完成，继续注册写事件 key.interestOps(SelectionKey.OP_WRITE); } else { // 写入完成，注册读事件 key.interestOps(SelectionKey.OP_READ); } } catch (IOException e) { System.out.println(ExceptionUtil.getBriefExceptionStackTrace(e)); } }

public class SocketAttachment { private SocketChannel socketChannel; private String recvString; private ByteBuffer sendBuffer;

public SocketAttachment(SocketChannel socketChannel) {
    this.socketChannel = socketChannel;
}

public SocketChannel getSocketChannel() {
    return socketChannel;
}

public String getRecvString() {
    return recvString;
}

public void setRecvString(String recvString) {
    this.recvString = recvString;
}

public ByteBuffer getSendBuffer() {
    return sendBuffer;
}

public void setSendBuffer(ByteBuffer sendBuffer) {
    this.sendBuffer = sendBuffer;
}

}

说明：

1. 在handle方法中，注册了读事件，并将SocketChannel和一个SocketAttachment对象关联起来，将SocketAttachment作为附件添加到SelectionKey中。
2. handleRead方法中，从SelectionKey中获取SocketAttachment对象，处理读事件，将接收到的数据保存到SocketAttachment中，并设置发送的响应消息。
3. 在设置完发送的响应消息后，将SelectionKey的操作设置为写操作，等待下一个事件循环调用handleWrite方法。
4. handleWrite方法中，从SelectionKey中获取SocketAttachment对象，处理写事件，将响应消息发送给客户端，如果写入未完成则继续注册写事件，否则注册读事件并等待下一个事件循环调用handleRead方法。
5. 新增了一个SocketAttachment类，用于保存SocketChannel、接收到的数据和要发送的响应消息