https://github.com/augustoproiete-repros/repro-nswag-jsonpatchdocument-nre
Minimal, Reproducible example of NullReferenceException when using NSwag and JsonPatchDocument<T>
https://github.com/augustoproiete-repros/repro-nswag-jsonpatchdocument-nre
jsonpatch jsonpatchdocument nswag null-reference-exception
Last synced: 3 months ago
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Minimal, Reproducible example of NullReferenceException when using NSwag and JsonPatchDocument<T>
- Host: GitHub
- URL: https://github.com/augustoproiete-repros/repro-nswag-jsonpatchdocument-nre
- Owner: augustoproiete-repros
- License: apache-2.0
- Created: 2020-11-06T19:17:45.000Z (almost 6 years ago)
- Default Branch: master
- Last Pushed: 2020-11-15T01:38:06.000Z (almost 6 years ago)
- Last Synced: 2025-02-27T01:53:29.171Z (over 1 year ago)
- Topics: jsonpatch, jsonpatchdocument, nswag, null-reference-exception
- Language: C#
- Homepage: https://github.com/RicoSuter/NSwag/issues/3147
- Size: 67.4 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Codeowners: CODEOWNERS
Awesome Lists containing this project
README
## NSwag: `NullReferenceException` when using `JsonPatchDocument`
> https://github.com/RicoSuter/NSwag/issues/3147
I get a `NullReferenceException` if I have any controller receiving a `JsonPatchDocument` instance.
```csharp
[ApiController]
[Route("[controller]")]
public class WeatherForecastController : ControllerBase
{
[HttpPatch]
public ActionResult PartialUpdate([FromBody] JsonPatchDocument update)
{
return Ok();
}
}
```
```csharp
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
namespace ReproNSwagJsonPatchDocumentNRE
{
public class SomeMiddleware
{
private readonly RequestDelegate _next;
public SomeMiddleware(RequestDelegate next)
{
_next = next;
}
public async Task Invoke(HttpContext httpContext)
{
await _next(httpContext); // BOOM!
}
}
}
```
### Run the project in Debug Mode (F5)
```
System.NullReferenceException: 'Object reference not set to an instance of an object.'
Newtonsoft.Json.dll!Newtonsoft.Json.Serialization.DefaultContractResolver.CreateShouldSerializeTest.AnonymousMethod__0(object o) Unknown
```
Call Stack:
```
[Lightweight Function]
Newtonsoft.Json.dll!Newtonsoft.Json.Serialization.DefaultContractResolver.CreateShouldSerializeTest.AnonymousMethod__0(object o)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.GenerateProperties(System.Type type, NJsonSchema.JsonSchema schema, NJsonSchema.Generation.JsonSchemaResolver schemaResolver)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.GenerateInheritance(Namotion.Reflection.ContextualType type, NJsonSchema.JsonSchema schema, NJsonSchema.Generation.JsonSchemaResolver schemaResolver)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.GenerateObject(NJsonSchema.JsonSchema schema, NJsonSchema.Generation.JsonTypeDescription typeDescription, NJsonSchema.Generation.JsonSchemaResolver schemaResolver)
NSwag.Generation.dll!NSwag.Generation.OpenApiSchemaGenerator.GenerateObject(NJsonSchema.JsonSchema schema, NJsonSchema.Generation.JsonTypeDescription typeDescription, NJsonSchema.Generation.JsonSchemaResolver schemaResolver)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.Generate(NJsonSchema.JsonSchema schema, Namotion.Reflection.ContextualType contextualType, NJsonSchema.Generation.JsonSchemaResolver schemaResolver)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.Generate(Namotion.Reflection.ContextualType contextualType, NJsonSchema.Generation.JsonSchemaResolver schemaResolver)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.GenerateWithReferenceAndNullability(Namotion.Reflection.ContextualType contextualType, bool isNullable, NJsonSchema.Generation.JsonSchemaResolver schemaResolver, System.Action transformation)
NSwag.Generation.dll!NSwag.Generation.OpenApiSchemaGenerator.GenerateWithReferenceAndNullability(Namotion.Reflection.ContextualType contextualType, bool isNullable, NJsonSchema.Generation.JsonSchemaResolver schemaResolver, System.Action transformation)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.GenerateArray(NJsonSchema.JsonSchema schema, NJsonSchema.Generation.JsonTypeDescription typeDescription, NJsonSchema.Generation.JsonSchemaResolver schemaResolver)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.Generate(NJsonSchema.JsonSchema schema, Namotion.Reflection.ContextualType contextualType, NJsonSchema.Generation.JsonSchemaResolver schemaResolver)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.Generate(Namotion.Reflection.ContextualType contextualType, NJsonSchema.Generation.JsonSchemaResolver schemaResolver)
NJsonSchema.dll!NJsonSchema.Generation.JsonSchemaGenerator.GenerateWithReferenceAndNullability(Namotion.Reflection.ContextualType contextualType, bool isNullable, NJsonSchema.Generation.JsonSchemaResolver schemaResolver, System.Action transformation)
NSwag.Generation.dll!NSwag.Generation.OpenApiSchemaGenerator.GenerateWithReferenceAndNullability(Namotion.Reflection.ContextualType contextualType, bool isNullable, NJsonSchema.Generation.JsonSchemaResolver schemaResolver, System.Action transformation)
NSwag.Generation.AspNetCore.dll!NSwag.Generation.AspNetCore.Processors.OperationParameterProcessor.AddBodyParameter(NSwag.Generation.Processors.Contexts.OperationProcessorContext context, NSwag.Generation.AspNetCore.Processors.OperationParameterProcessor.ExtendedApiParameterDescription extendedApiParameter)
NSwag.Generation.AspNetCore.dll!NSwag.Generation.AspNetCore.Processors.OperationParameterProcessor.Process(NSwag.Generation.Processors.Contexts.OperationProcessorContext operationProcessorContext)
NSwag.Generation.AspNetCore.dll!NSwag.Generation.AspNetCore.AspNetCoreOpenApiDocumentGenerator.RunOperationProcessors(NSwag.OpenApiDocument document, Microsoft.AspNetCore.Mvc.ApiExplorer.ApiDescription apiDescription, System.Type controllerType, System.Reflection.MethodInfo methodInfo, NSwag.OpenApiOperationDescription operationDescription, System.Collections.Generic.List allOperations, NSwag.Generation.OpenApiDocumentGenerator swaggerGenerator, NSwag.OpenApiSchemaResolver schemaResolver)
NSwag.Generation.AspNetCore.dll!NSwag.Generation.AspNetCore.AspNetCoreOpenApiDocumentGenerator.AddOperationDescriptionsToDocument(NSwag.OpenApiDocument document, System.Type controllerType, System.Collections.Generic.List> operations, NSwag.Generation.OpenApiDocumentGenerator swaggerGenerator, NSwag.OpenApiSchemaResolver schemaResolver)
NSwag.Generation.AspNetCore.dll!NSwag.Generation.AspNetCore.AspNetCoreOpenApiDocumentGenerator.GenerateForControllers(NSwag.OpenApiDocument document, System.Linq.IGrouping>[] apiGroups, NSwag.OpenApiSchemaResolver schemaResolver)
NSwag.Generation.AspNetCore.dll!NSwag.Generation.AspNetCore.AspNetCoreOpenApiDocumentGenerator.GenerateAsync(Microsoft.AspNetCore.Mvc.ApiExplorer.ApiDescriptionGroupCollection apiDescriptionGroups)
NSwag.Generation.AspNetCore.dll!NSwag.Generation.AspNetCore.AspNetCoreOpenApiDocumentGenerator.GenerateAsync(object serviceProvider)
NSwag.AspNetCore.dll!NSwag.AspNetCore.OpenApiDocumentProvider.GenerateAsync(string documentName)
NSwag.AspNetCore.dll!NSwag.AspNetCore.Middlewares.OpenApiDocumentMiddleware.GenerateDocumentAsync(Microsoft.AspNetCore.Http.HttpContext context)
NSwag.AspNetCore.dll!NSwag.AspNetCore.Middlewares.OpenApiDocumentMiddleware.GetDocumentAsync(Microsoft.AspNetCore.Http.HttpContext context)
NSwag.AspNetCore.dll!NSwag.AspNetCore.Middlewares.OpenApiDocumentMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context)
Microsoft.AspNetCore.Routing.dll!Microsoft.AspNetCore.Routing.EndpointMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext httpContext)
Microsoft.AspNetCore.Authorization.Policy.dll!Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context)
ReproNSwagJsonPatchDocumentNRE.dll!ReproNSwagJsonPatchDocumentNRE.SomeMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext httpContext) Line 17
at C:\augustoproiete\repro-nswag-jsonpatchdocument-nre\src\ReproNSwagJsonPatchDocumentNRE\SomeMiddleware.cs(17)
Microsoft.AspNetCore.Routing.dll!Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware.SetRoutingAndContinue(Microsoft.AspNetCore.Http.HttpContext httpContext)
Microsoft.AspNetCore.Routing.dll!Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext httpContext)
Microsoft.AspNetCore.Diagnostics.dll!Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context)
Microsoft.AspNetCore.HostFiltering.dll!Microsoft.AspNetCore.HostFiltering.HostFilteringMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context)
Microsoft.AspNetCore.Hosting.dll!Microsoft.AspNetCore.Hosting.HostingApplication.ProcessRequestAsync(Microsoft.AspNetCore.Hosting.HostingApplication.Context context)
Microsoft.AspNetCore.Server.IIS.dll!Microsoft.AspNetCore.Server.IIS.Core.IISHttpContextOfT.ProcessRequestAsync()
Microsoft.AspNetCore.Server.IIS.dll!Microsoft.AspNetCore.Server.IIS.Core.IISHttpContext.HandleRequest()
Microsoft.AspNetCore.Server.IIS.dll!Microsoft.AspNetCore.Server.IIS.Core.IISHttpContext.Execute()
System.Private.CoreLib.dll!System.Threading.ThreadPoolWorkQueue.Dispatch()
System.Private.CoreLib.dll!System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
```