如何修复serialVersionUID不相同类中的异常？

Question

java.io.InvalidClassException:
com.sungymobile.cache.resource.ResourceCacheLoader$ResourceCache; 
local class incompatible: stream classdesc serialVersionUID = 6381106003702990139, 
local class serialVersionUID = 3777451853403693248

Answer 1

Seems, that you have a serialized class, that does not provide fixed serial version parameter. You have to provide:

private static final long serialVersionUID = 0L;

With any long value in your class, which must to be cached. Due to Java Docs for Serializable interface:

The serialization runtime associates with each serializable class a version number, called a serialVersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect to serialization. If the receiver has loaded a class for the object that has a different serialVersionUID than that of the corresponding sender's class, then deserialization will result in an InvalidClassException. A serializable class can declare its own serialVersionUID explicitly by declaring a field named "serialVersionUID" that must be static, final, and of type long:

This value is needed to determine, wether cached instance is the same version with the current class, you have.