I want to create a simple file upload endpoint in ASP.NET Core 6 and thought it would be as easy as described here https://dotnetthoughts.net/handling-file-uploads-in-openapi-with-aspnet-core/.
When I have an endpoint defined like:
app.MapPost("/upload", (IFormFile file) =>
{
//Do something with the file
return Results.Ok();
}).Accepts<IFormFile>("multipart/form-data").Produces(200);
I get a 415 back when I call the endpoint. The message I get back is something like:
Expected a supported JSON media type but got "multipart/form-data; ...
Not sure why it expected a supported json when I say that the endpoint should accept multipart/form-data
.
Any ideas or thoughts on what to do here?
CodePudding user response:
Currently out of the box support for binding in Minimal APIs is quite limited. Supported binding sources:
- Route values
- Query string
- Header
- Body (as JSON)
- Services provided by dependency injection
- Custom
NOTE: Binding from forms is not natively supported in .NET 6
You can either leverage custom binding or use special types handling:
app.MapPost("/upload", (HttpRequest request) =>
{
//Do something with the file
var files = request.Form.Files;
return Results.Ok();
})
.Accepts("multipart/form-data")
.Produces(200);