可选数据异常 Java

Question

我正在制作一个语音聊天程序，我得到了 OptionalDataException 错误，我在添加之前从未遇到过这个问题语音。语音通信由不同的套接字处理，所以我看不出问题。

Code:

    public class Client implements Runnable {                                                   // CLIENT
    private String msg;
    public void run() {
        try {
            s1 = new Socket(ipAddress, port);
            s2 = new Socket(ipAddress, 1210);
            o1 = new ObjectOutputStream(s1.getOutputStream());
            o1.writeObject(name);
            serverListModel.addElement(name);
            i1 = new ObjectInputStream(s1.getInputStream());
            Thread voice = new Thread(new ClientAudio());
            voice.start();
            while(true) {
                msg = (String) i1.readObject();
                    String[] namePart = msg.split("-");
                    if(namePart[0].equals("AddName") && !namePart[1].equals(name) && !serverListModel.contains(namePart[1])) {
                        serverListModel.addElement(namePart[1]);
                    }
                    if(namePart[0].equals("RemoveName") && !namePart[1].equals(name)) {
                        serverListModel.removeElement(namePart[1]);
                    }
                    if(!msg.equals(null) && !namePart[0].equals("AddName") && !namePart[0].equals("RemoveName")) {
                        chatWindow.append(msg+"\n");
                    }
                }
        } catch (IOException | ClassNotFoundException e) {
            chatWindow.append("Server Closed");
            e.printStackTrace();
            try {
                s1.close();
            } catch (IOException e1) {
                e1.printStackTrace();
            }
            mainWindow(true);
        }
    }
}


flag

它被扔到 msg = (String) i1.readObject(); 并且它说

java.io.OptionalDataException
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1361)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at client.chat$Client.run(chat.java:319)
at java.lang.Thread.run(Thread.java:745)

Answer 1

来自Oracle：

Exception indicating the failure of an object read operation due to unread primitive data, or the end of data belonging to a serialized object in the stream. This exception may be thrown in two cases:

An attempt was made to read an object when the next element in the stream is primitive data. In this case, the OptionalDataException's length field is set to the number of bytes of primitive data immediately readable from the stream, and the eof field is set to false.

An attempt was made to read past the end of data consumable by a class-defined readObject or readExternal method. In this case, the OptionalDataException's eof field is set to true, and the length field is set to 0.

流中的下一个对象似乎不是 String。

服务器代码在你的控制之下吗？或者你至少有来源？如果是这样，请验证 String 对象是唯一被传输的对象，或者调整您的代码以处理实际发送的 objects/primitives。

编辑

来自你的另一个问题Voice Server not working：

byte[] soundData = 
//...
o.write(soundData, 0, bytesRead);

...您似乎没有将 String 对象写入 ObjectOutputStream。实际上，甚至不是写对象，而是原始字节。您必须以与写入数据相同的方式读取数据；其他任何方法都行不通。

可选数据异常 Java

OptionalDataException Java

java

client

voice-recording

optionaldataexception