Response code 400 in Asp.net core 3.1 version

Ketan Patil 21

I am getting 400 response code in Asp.net core web api on POST Save method Controller/Save ,i just recently upgraded .net core web api version to 3.1

        [HttpPost]
        [ContentValidation("Shell.xsd")]
        [Authorize(Policy = "Test")]
        public async Task<IActionResult> Save([FromBody]Shell shell)
        {

        }

Brando Zhang-MSFT 3,701 Reputation points Microsoft Vendor

2021-06-25T02:56:21.223+00:00

Could you please tell me which environment you faced it returned 400 error from development or production environment? Could you please post the http request makeup for your request?

1 answer

Michael Taylor 54,731 Reputation points

2021-06-22T14:51:47.327+00:00

We're going to need more information. What does the actual request look like being sent over the wire?

There is a ContentValidation attribute on your action that I've never seen before. If it does validation against XML then try commenting it out temporarily. Personally I would be worried about this because API media formats should not be part of the action implementation. Furthermore the binder is going to fix all this up anyway so you should just validate the model.

Does your model have validation? If so what does it look like?
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Ketan Patil 21 Reputation points

2021-06-22T14:56:13.257+00:00

@Michael Taylor actual request being sent over third party tool & no there is no model validation inside method

AgaveJoe 28,536 Reputation points

2021-06-22T15:13:01.68+00:00

What happened when you commented the ContentValidation and Policy attributes? Can you share the actual HTTP request and the Shell class?

Michael Taylor 54,731 Reputation points

2021-06-22T15:37:37.113+00:00

ASP.NET Core does model validation automatically, you wouldn't have anything in the code. Please post the model information. Also verify that ContentValidation attribute.

Please post the actual HTTP request being sent across the wire so we can compare to what the model has.

Also please post the HTTP response that is sent back. Within it for 400 errors should be what is actually wrong.

The more information you provide us the faster this can be resolved.

Ketan Patil 21 Reputation points

2021-06-22T17:55:57.197+00:00

@Michael Taylor can you mark this thread as private so i can share details

Michael Taylor 54,731 Reputation points

2021-06-22T18:12:00.653+00:00

I cannot as I'm not an admin. That isn't really how the forums are supposed to work anyway since others would benefit from this information as well.

The structure of your data probably isn't sensitive so you should be able to post the model (or at least the subset that might be relevant). For an example of the request you can replace the actual data with dummy data (e.g. "SSN": "1234"). The problem isn't likely in the actual data but rather how your code is trying to map it.
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Response code 400 in Asp.net core 3.1 version

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