今天试验Java序列化和逆序列化时，更改序列化的参数后发现逆序列化报错。
错误如下：

Exception in thread "main" java.io.InvalidClassException: cn.homework06.StudentMark; local class incompatible: stream classdesc serialVersionUID = 8184588591723115895, local class serialVersionUID = -3951306940301143249
	at java.base/java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:689)
	at java.base/java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1903)
	at java.base/java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1772)
	at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2060)
	at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1594)
	at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:430)
	at cn.homework06.StudentMark_read.readFile2Class(StudentMark_read.java:34)
	at cn.homework06.StudentMark_read.main(StudentMark_read.java:88)

个人推测是由于之前的文件未删除，而我写入文件是添加至文件末尾而非覆盖，所以导致开头无法序列化，所以把文件删除重新写入即可