fixed BeanNoSuchBeanDefinitionException thrown by GraphQLWebAutoConfiguration.graphQLObjectMapper when graphql.servlet.use-default-objectmapper is set to false and no bean for ObjectMapperProvider is provided by an application; this also allows users to specify an ObjectMapperConfigurer bean, currently, it will never be used because a ObjectMapperProvider bean is essentially required to always exist

Author: Brandon Sara

graphql-spring-boot-autoconfigure/src/main/java/com/oembedler/moon/graphql/boot/GraphQLWebAutoConfiguration.java

@@ -30,6 +30,7 @@
 import graphql.schema.GraphQLSchema;
 import graphql.servlet.*;
 import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.condition.*;
@@ -194,13 +195,15 @@ public GraphQLQueryInvoker queryInvoker(ExecutionStrategyProvider executionStrat
 
     @Bean
     @ConditionalOnMissingBean
-    public GraphQLObjectMapper graphQLObjectMapper(ObjectMapperProvider objectMapperProvider) {
+    public GraphQLObjectMapper graphQLObjectMapper(ObjectProvider<ObjectMapperProvider> objectMapperProviderObjectProvider) {
         GraphQLObjectMapper.Builder builder = newBuilder();
 
         if (errorHandler != null) {
             builder.withGraphQLErrorHandler(errorHandler);
         }
 
+        ObjectMapperProvider objectMapperProvider = objectMapperProviderObjectProvider.getIfAvailable();
+
         if (objectMapperProvider != null) {
             builder.withObjectMapperProvider(objectMapperProvider);
         } else if (objectMapperConfigurer != null) {