java.io.StreamCorruptedException: invalid stream header: 00000000

java.io.StreamCorruptedException: invalid stream header: 00000000 

序列化时抛出此异常，原因是因为疏忽传入了一个空的缓冲，注意00000000，这是由于空的缓冲造成的。部分代码如下：

byte[] buffer = new byte[16384];    // 16k
DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
while(true) {
    mcastSocket.receive(packet);
    
    ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(buffer));
    // ...

}

 修改后：

byte[] buffer = new byte[16384];    // 16k
DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
while(true) {
    mcastSocket.receive(packet);
    
    ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(packet.getData()));
// ...

}