Java 发生此异常的原因'；o、 StreamCorruptedException:无效的流头：D8322EDA'；

我正在android中使用蓝牙。我的主要目标是通过蓝牙传输大型视频文件。 下面是蓝牙聊天连接示例。 实际上，我将视频转换成字节数组，然后在onreceive方法中将其转换回文件。 当转换回文件时，会发生一些异常。 我增加了连接线程中的缓冲区大小

将接收的字节[]转换为Hashmap

异常发生在

in=新的ObjectInputStream（bis）

蓝牙接收码

case MESSAGE_READ:

                    byte[] readBuf = (byte[]) msg.obj;
                    // construct a string from the valid bytes in the buffer
                    onRecieve(readBuf);

bluetoothconnectivityservice.java

使用ObjectOutputStream的编码帧。在发件人站点上

HashMap<String, Object> hm = new HashMap<>();
...
ByteArrayOutputStream bao = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bao);
oos.writeObject(hm);
Socket.getOutputStream().write(bao.toByteArray()); // send the 
...

对不起。我没读到你把字节分块发送。但是，通常发送会接管发送包（分块或不分块），而接收任务负责组装分块。由于您明确使用ChunkOutputStream和ChunkInputStream，因此您的代码似乎不完整。ObjectInputStream需要ObjectOutputStream编写的对象。我不知道你是如何“创建”readBuf的，也不知道readBuf是如何创建的。ObjectStream的起始十六进制代码是ACDE。。。。但是你的十六进制代码看起来很奇怪。readBuf实际上是从发送方收到的字节数。@Joe实际上我自己也很困惑。两周后，我又开始了这项任务。在我的应用程序中传输大型视频文件。有两个项目要发送，一个是视频模型，另一个是视频文件。现在，我使用一个简单的蓝牙聊天示例在设备之间进行通信并进行文件共享，将整个hashmap转换为字节数组，然后将其拆分并逐个发送数据块，在接收器端，接收所有数据块并将其合并以创建字节数组，然后从中，将其转换为hashmap，然后…hashmap本身就是一个可序列化的对象。查看下面的代码，您可能知道如何创建和编写（或发送）类似hashmao的对象。您确定正确使用了
readObject（）
？你认为这个方法有什么作用？你的意思可能是
read（byte[]，int，int）
或者甚至
readFully（）
，如果你足够幸运，因此没有从内存错误中获得
。仍然是相同的错误：W/System.err:java.io.StreamCorruptedException:invalid stream header:FD0875E7Pls。提供如何发送包裹的代码。在接收站点上，您应该将整个数据读入ByteArrayPutStream，然后将其加载到ByteArrayInputStream（bao.toByteArray（））中，然后再将其作为ObjectInputStream（）中的对象读取。
private void onRecieve(byte[] readBuf) {

        HashMap<String, byte[]> receivedMap = (HashMap<String, byte[]>) convertFromBytes(readBuf);
        //Log.d("recieveMAP Size" , String.valueOf(receivedMap.size()));
                if (receivedMap != null && receivedMap.size() == 2) {
                    byte[] filebyte = receivedMap.get("file");
                    byte[] objectbyte = receivedMap.get("object");
                    if (filebyte != null) {
                        File file = new File("storage/emulated/0/Download/name.mp4");
                        try {
                            file.createNewFile();
                        } catch (IOException e) {
                            e.printStackTrace();
                            Log.e("Mainactivity", e.getLocalizedMessage());
                        }
                        if (file.exists()) {
                            try {
                                FileUtils.writeByteArrayToFile(file, filebyte);
                            } catch (IOException e) {
                                e.printStackTrace();
                                Log.e(TAG, e.getLocalizedMessage());
                            }
                        } else {
                            //System.out.println("file created: " + file);
                            Toast.makeText(context, "File is Empty", Toast.LENGTH_LONG).show();
                        }
                    } else {
                        Log.e(TAG, "selected video path = null!");
                    }

                    //System.out.println("file created: " + file);
                    //Toast.makeText(context, "File Created", Toast.LENGTH_LONG).show();

                   // Video video = (Video) convertFromBytes(objectbyte);
                }
    }

 private class ConnectedThread extends Thread {
        private final BluetoothSocket mmSocket;
        private final InputStream mmInStream;
        private final OutputStream mmOutStream;

        public ConnectedThread(BluetoothSocket socket) {
            mmSocket = socket;
            InputStream tmpIn = null;
            OutputStream tmpOut = null;
            // Get the BluetoothSocket input and output streams
            try {
                tmpIn = socket.getInputStream();
                tmpOut = socket.getOutputStream();
            } catch (IOException e) {
            }
            mmInStream = tmpIn;
            mmOutStream = tmpOut;
        }

        public void run() {
            byte[] buffer = new byte[ 4096 * 16 ];
            int bytes;
            // Keep listening to the InputStream while connected
            while (true) {
                try {
                    // Read from the InputStream
                    bytes = mmInStream.read(buffer);
                    // Send the obtained bytes to the UI Activity
                    mHandler.obtainMessage(BTListFragment.MESSAGE_READ, bytes, -1, buffer)
                            .sendToTarget();
                } catch (IOException e) {
                    connectionLost();
                    break;
                }
            }
        }

        /**
         * Write to the connected OutStream.
         *
         * @param buffer The bytes to write
         */
        public void write(byte[] buffer) {
            try {
                mmOutStream.write(buffer);
                // Share the sent message back to the UI Activity
                mHandler.obtainMessage(BTListFragment.MESSAGE_WRITE, -1, -1, buffer)
                        .sendToTarget();
            } catch (IOException e) {
            }
        }

        public void cancel() {
            try {
                mmSocket.close();
            } catch (IOException e) {
            }
        }
    }

package com.example.accessagriculture.Utils;

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;

import com.example.accessagriculture.Views.Fragments.BTListFragment;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;

/**
 * This class does all the work for setting up and managing Bluetooth
 * connections with other devices. It has a thread that listens for
 * incoming connections, a thread for connecting with a device, and a
 * thread for performing data transmissions when connected.
 */
public class BTConnectService {

    // Name for the SDP record when creating server socket
    private static final String NAME = "BluetoothChat";

    // Unique UUID for this application
    private static final UUID MY_UUID = UUID.fromString("fa87c0d0-afac-11de-8a39-0800200c9a66");

    // Member fields
    private final BluetoothAdapter mAdapter;
    private final Handler mHandler;
    private AcceptThread mAcceptThread;
    private ConnectThread mConnectThread;
    private ConnectedThread mConnectedThread;
    private int mState;

    // Constants that indicate the current connection state
    public static final int STATE_NONE = 0;       // we're doing nothing
    public static final int STATE_LISTEN = 1;     // now listening for incoming connections
    public static final int STATE_CONNECTING = 2; // now initiating an outgoing connection
    public static final int STATE_CONNECTED = 3;  // now connected to a remote device

    /**
     * Constructor. Prepares a new BluetoothChat session.
     * @param handler A Handler to send messages back to the UI Activity
     */
    public BTConnectService(Handler handler) {
        mAdapter = BluetoothAdapter.getDefaultAdapter();
        mState = STATE_NONE;
        mHandler = handler;
    }

    /**
     * Set the current state of the chat connection
     *
     * @param state An integer defining the current connection state
     */
    private synchronized void setState(int state) {
        mState = state;
        // Give the new state to the Handler so the UI Activity can update
        mHandler.obtainMessage(BTListFragment.MESSAGE_STATE_CHANGE, state, -1).sendToTarget();
    }

    /**
     * Return the current connection state.
     */
    public synchronized int getState() {
        return mState;
    }

    /**
     * Start the chat service. Specifically start AcceptThread to begin a
     * session in listening (server) mode. Called by the Activity onResume()
     */
    public synchronized void start() {
        // Cancel any thread attempting to make a connection
        if (mConnectThread != null) {
            mConnectThread.cancel();
            mConnectThread = null;
        }
        // Cancel any thread currently running a connection
        if (mConnectedThread != null) {
            mConnectedThread.cancel();
            mConnectedThread = null;
        }
        // Start the thread to listen on a BluetoothServerSocket
        if (mAcceptThread == null) {
            mAcceptThread = new AcceptThread();
            mAcceptThread.start();
        }
        setState(STATE_LISTEN);
    }

    /**
     * Start the ConnectThread to initiate a connection to a remote device.
     *
     * @param device The BluetoothDevice to connect
     */
    public synchronized void connect(BluetoothDevice device) {
        // Cancel any thread attempting to make a connection
        if (mState == STATE_CONNECTING) {
            if (mConnectThread != null) {
                mConnectThread.cancel();
                mConnectThread = null;
            }
        }
        // Cancel any thread currently running a connection
        if (mConnectedThread != null) {
            mConnectedThread.cancel();
            mConnectedThread = null;
        }
        // Start the thread to connect with the given device
        mConnectThread = new ConnectThread(device);
        mConnectThread.start();
        setState(STATE_CONNECTING);
    }

    /**
     * Start the ConnectedThread to begin managing a Bluetooth connection
     *
     * @param socket The BluetoothSocket on which the connection was made
     * @param device The BluetoothDevice that has been connected
     */
    public synchronized void connected(BluetoothSocket socket, BluetoothDevice device) {
        // Cancel the thread that completed the connection
        if (mConnectThread != null) {
            mConnectThread.cancel();
            mConnectThread = null;
        }
        // Cancel any thread currently running a connection
        if (mConnectedThread != null) {
            mConnectedThread.cancel();
            mConnectedThread = null;
        }
        // Cancel the accept thread because we only want to connect to one device
        if (mAcceptThread != null) {
            mAcceptThread.cancel();
            mAcceptThread = null;
        }
        // Start the thread to manage the connection and perform transmissions
        mConnectedThread = new ConnectedThread(socket);
        mConnectedThread.start();
        // Send the name of the connected device back to the UI Activity
        Message msg = mHandler.obtainMessage(BTListFragment.MESSAGE_DEVICE_NAME);
        Bundle bundle = new Bundle();
        bundle.putString(BTListFragment.DEVICE_NAME, device.getName());
        msg.setData(bundle);
        mHandler.sendMessage(msg);
        setState(STATE_CONNECTED);
    }

    /**
     * Stop all threads
     */
    public synchronized void stop() {
        if (mConnectThread != null) {
            mConnectThread.cancel();
            mConnectThread = null;
        }
        if (mConnectedThread != null) {
            mConnectedThread.cancel();
            mConnectedThread = null;
        }
        if (mAcceptThread != null) {
            mAcceptThread.cancel();
            mAcceptThread = null;
        }
        setState(STATE_NONE);
    }

    /**
     * Write to the ConnectedThread in an unsynchronized manner
     *
     * @param out The bytes to write
     * @see ConnectedThread#write(byte[])
     */
    public void write(byte[] out) {
        // Create temporary object
        ConnectedThread r;
        // Synchronize a copy of the ConnectedThread
        synchronized (this) {
            if (mState != STATE_CONNECTED) return;
            r = mConnectedThread;
        }
        // Perform the write unsynchronized
        r.write(out);
    }

    /**
     * Indicate that the connection attempt failed and notify the UI Activity.
     */
    private void connectionFailed() {
        setState(STATE_LISTEN);
        // Send a failure message back to the Activity
        Message msg = mHandler.obtainMessage(BTListFragment.MESSAGE_TOAST);
        Bundle bundle = new Bundle();
        bundle.putString(BTListFragment.TOAST, "Unable to connect device");
        msg.setData(bundle);
        mHandler.sendMessage(msg);
    }

    /**
     * Indicate that the connection was lost and notify the UI Activity.
     */
    private void connectionLost() {
        //setState(STATE_LISTEN);
        // Send a failure message back to the Activity
        /*Message msg = mHandler.obtainMessage(BTListFragment.MESSAGE_TOAST);
        //Bundle bundle = new Bundle();
       // bundle.putString(BTListFragment.TOAST, "Device connection was lost");
        msg.setData(bundle);
        mHandler.sendMessage(msg);*/
    }

    /**
     * This thread runs while listening for incoming connections. It behaves
     * like a server-side client. It runs until a connection is accepted
     * (or until cancelled).
     */
    private class AcceptThread extends Thread {
        // The local server socket
        private final BluetoothServerSocket mmServerSocket;

        public AcceptThread() {
            BluetoothServerSocket tmp = null;
            // Create a new listening server socket
            try {
                tmp = mAdapter.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);
            } catch (IOException e) {
            }
            mmServerSocket = tmp;
        }

        public void run() {
            setName("AcceptThread");
            BluetoothSocket socket = null;
            // Listen to the server socket if we're not connected
            while (mState != STATE_CONNECTED) {
                try {
                    // This is a blocking call and will only return on a
                    // successful connection or an exception
                    socket = mmServerSocket.accept();
                } catch (IOException e) {
                    break;
                }
                // If a connection was accepted
                if (socket != null) {
                    synchronized (BTConnectService.this) {
                        switch (mState) {
                            case STATE_LISTEN:
                            case STATE_CONNECTING:
                                // Situation normal. Start the connected thread.
                                connected(socket, socket.getRemoteDevice());
                                break;
                            case STATE_NONE:
                            case STATE_CONNECTED:
                                // Either not ready or already connected. Terminate new socket.
                                try {
                                    socket.close();
                                } catch (IOException e) {
                                }
                                break;
                        }
                    }
                }
            }
        }

        public void cancel() {
            try {
                mmServerSocket.close();
            } catch (IOException e) {
            }
        }
    }

    /**
     * This thread runs while attempting to make an outgoing connection
     * with a device. It runs straight through; the connection either
     * succeeds or fails.
     */
    private class ConnectThread extends Thread {
        private final BluetoothSocket mmSocket;
        private final BluetoothDevice mmDevice;

        public ConnectThread(BluetoothDevice device) {
            mmDevice = device;
            BluetoothSocket tmp = null;
            // Get a BluetoothSocket for a connection with the
            // given BluetoothDevice
            try {
                tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
            } catch (IOException e) {
            }
            mmSocket = tmp;
        }

        public void run() {
            setName("ConnectThread");
            // Always cancel discovery because it will slow down a connection
            mAdapter.cancelDiscovery();
            // Make a connection to the BluetoothSocket
            try {
                // This is a blocking call and will only return on a
                // successful connection or an exception
                mmSocket.connect();
            } catch (IOException e) {
                connectionFailed();
                // Close the socket
                try {
                    mmSocket.close();
                } catch (IOException e2) {
                }
                // Start the service over to restart listening mode
                BTConnectService.this.start();
                return;
            }
            // Reset the ConnectThread because we're done
            synchronized (BTConnectService.this) {
                mConnectThread = null;
            }
            // Start the connected thread
            connected(mmSocket, mmDevice);
        }

        public void cancel() {
            try {
                mmSocket.close();
            } catch (IOException e) {
            }
        }
    }

    /**
     * This thread runs during a connection with a remote device.
     * It handles all incoming and outgoing transmissions.
     */
    private class ConnectedThread extends Thread {
        private final BluetoothSocket mmSocket;
        private final InputStream mmInStream;
        private final OutputStream mmOutStream;

        public ConnectedThread(BluetoothSocket socket) {
            mmSocket = socket;
            InputStream tmpIn = null;
            OutputStream tmpOut = null;
            // Get the BluetoothSocket input and output streams
            try {
                tmpIn = socket.getInputStream();
                tmpOut = socket.getOutputStream();
            } catch (IOException e) {
            }
            mmInStream = tmpIn;
            mmOutStream = tmpOut;
        }

        public void run() {
            byte[] buffer = new byte[1024];
            int bytes;
            // Keep listening to the InputStream while connected
            while (true) {
                try {
                    // Read from the InputStream
                    bytes = mmInStream.read(buffer);
                    // Send the obtained bytes to the UI Activity
                    mHandler.obtainMessage(BTListFragment.MESSAGE_READ, bytes, -1, buffer)
                            .sendToTarget();
                } catch (IOException e) {
                    connectionLost();
                    break;
                }
            }
        }

        /**
         * Write to the connected OutStream.
         *
         * @param buffer The bytes to write
         */
        public void write(byte[] buffer) {
            try {
                mmOutStream.write(buffer);
                // Share the sent message back to the UI Activity
               mHandler.obtainMessage(BTListFragment.MESSAGE_WRITE, -1, -1, buffer)
                       .sendToTarget();
            } catch (IOException e) {
            }
        }

        public void cancel() {
            try {
                mmSocket.close();
            } catch (IOException e) {
            }
        }
    }
}

HashMap<String, Object> hm = new HashMap<>();
...
ByteArrayOutputStream bao = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bao);
oos.writeObject(hm);
Socket.getOutputStream().write(bao.toByteArray()); // send the 
...

private Object convertFromBytes(byte[] bytes) {
  ... // your codes
}