How to troubleshoot Java exceptions Noclassdeffounderror

Source: Internet
Author: User
Tags serialization

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.

Before modification:

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.

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