TypeMappingException:为具有不同返回类型的操作"opName“检测到的多个方法

Question

在使用graphql和Spring时，我试图运行该项目，但我遇到了以下情况：

exception:org.springframework.beans.factory.BeanCreationException: Error creating bean
with name 'graphQLSchema' defined in class path resource 
[io/leangen/graphql/spqr/spring/autoconfigure/SpqrAutoConfiguration.class]: 
Bean instantiation via factory method failed; 
nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate 
[graphql.schema.GraphQLSchema]: Factory method 'graphQLSchema' threw exception; 
nested exception is io.leangen.graphql.metadata.exceptions.TypeMappingException: 
Multiple methods detected  for operation "defaultInstanceForType" with different 
return types. Types found: [com.google.protobuf.Message, com.google.protobuf.MessageLite]. 
If this is intentional, and you wish GraphQL SPQR to infer the most common super type automatically, see 
https://github.com/leangen/graphql-spqr/wiki/Errors#operation-with-multiple-resolver-methods-of-different-types 

我被重定向到这里寻求帮助：https://github.com/leangen/graphql-spqr/wiki/Errors#operation-with-multiple-resolver-methods-of-different-types

我没有多个名称相同的方法来触发我，异常中的URL没有帮助，甚至不能被编辑或注释。

Answer 1

删除protobuf时间戳字段解决了问题！

在更改了返回对象之后，我不得不重构com.google.protobuf.Timestamp，LocalDate，甚至字符串，并且它工作得很好。