java - 当 serialVersionId 未存储在序列化对象中时，反序列化过程如何知道序列化对象的 serialVersionId？

Question

当 serialVersionId 未存储在序列化对象中时，反序列化过程如何知道序列化对象的 serialVersionId，这需要与将要转换为的类的序列版本 ID 进行比较，以检查它是否兼容？

Answer 1

This article描述了 Java 对象的序列化形式:

AC ED: STREAM_MAGIC. Specifies that this is a serialization protocol.
00 05: STREAM_VERSION. The serialization version.
0x73: TC_OBJECT. Specifies that this is a new Object.
0x72: TC_CLASSDESC. Specifies that this is a new class.
00 0A: Length of the class name.
53 65 72 69 61 6c 54 65 73 74: SerialTest, the name of the class.
05 52 81 5A AC 66 02 F6: SerialVersionUID, the serial version identifier of this class.
(fields omitted)