Based on the Gae platform for the development of Web projects in Java development serialization and deserialization has Json,gson, etc., I used the Gson development process encountered in the deserialization process did not find the corresponding class exception, as shown in the following figure:
Depressed exception, the program is not where there is a problem, but is in the running process error.
And then the run As--configuration configuration, so no problem.
Select "Bootstrap Entries" and click Add JARs to add several related packages for the Gson introduced in the project:
OK, there is no serialization of the Noclassdeffounderror error, in fact, noclassdeffounderror error is a series, may be caused by other reasons, but here's "com/google/gson/reflect/ TypeToken "is a type.