InvalidProtocolBufferException：协议消息端组标记与预期的标记不匹配

Question

I'm trying to write a file and then read it again.

My write code:

ObjectOutputStream oos = null;
FileOutputStream fout = null;
try
{
    Object myObject;
    fout = new FileOutputStream(new File("C:\\Foo","Bar.log"));

    oos = new ObjectOutputStream(fout);
    oos.writeObject(myObject);

} catch (Exception ex) {
    ex.printStackTrace();
} finally {
    try {
        oos.close();
        fout.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

My reader:

FileInputStream input;
try {
    input = new FileInputStream(new File("C:\\Foo\\Bar.log"));
    MyFile parsedObject = MyFileFormat.MyFile.parseFrom(input);

} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

But I'm getting this exception on the parser:

com.google.protobuf.InvalidProtocolBufferException: Protocol message end-group tag did not match expected tag.
    at com.google.protobuf.InvalidProtocolBufferException.invalidEndTag(InvalidProtocolBufferException.java:94)

Can anyone help?

Answer 1

You use java's ObjectOutputStream to serialize your object, but using some custom de-serialization with guava involved? If you use ObjectOutputStream to write stuff, you should use ObjectInputStream to read it. Also, your example does not make any sense. You never initialize myObject variable in serialization snippet, this code will simply not compile.