英文:
HttpContext.Response.ContentType is set by default as "application/json; charset=utf-8" - how to change this default?
问题
I'm having an ASP.NET Core 6.0 Web API system where I'm caching requests to replay them (an idempotency layer). On the response pipeline, I get a Content-Type header with the value "application/json; charset=utf-8". But I see this question link that says that this header value is not right.
Then, in practice I see that it actually is giving me problems because when I replay the response with this header value, the SystemTextJsonOutputFormatter is not found as a valid output formatter (It matches just "application-json" and not "application-json; charset=utf-8").
Checking the source I see that SystemTextJsonOutputFormatter has SupportedEncodings.Add(Encoding.UTF8); as well as SupportedMediaTypes.Add(MediaTypeHeaderValues.ApplicationJson);
The only workaround I've found is to explicitly add this media type to the formatter like this:
builder.Services.AddControllers(options => {
var formatter = (TextOutputFormatter)options.OutputFormatters.
Where(o => o.GetType() == typeof(SystemTextJsonOutputFormatter)).First();
formatter.SupportedMediaTypes.Add("application/json; charset=utf-8");
});
It's not working around the right problem, in my opinion.
How can I set the response default not to contain the charset?
英文:
I'm having an ASP.NET Core 6.0 Web API system where I'm caching requests to replay them (an idempotency layer). On the response pipeline, I get a Content-Type header with the value "application/json; charset=utf-8". But I see this question https://stackoverflow.com/questions/19814908/what-content-type-header-to-use-for-json-application-json-charset-utf-8-or that says that this header value is not right.
Then, in practice I see that it actually is giving me problems, because when I replay the response with this header value that SystemTextJsonOutputFormatter is not found as a valid output formatter (It matches just "application-json" and not "application-json; charset=utf-8").
Checking the source I see that SystemTextJsonOutputFormatter has SupportedEncodings.Add(Encoding.UTF8); as well as SupportedMediaTypes.Add(MediaTypeHeaderValues.ApplicationJson);
The only workaround I've found is to explicitly add this media type to the formatter like this:
builder.Services.AddControllers(options => {
var formatter = (TextOutputFormatter)options.OutputFormatters.
Where(o => o.GetType() == typeof(SystemTextJsonOutputFormatter)).First();
formatter.SupportedMediaTypes.Add("application/json; charset=utf-8");
});
It's not working around the right problem, in my opinion.
How can I set the response default not to contain the charset?
答案1
得分: 1
一种更改响应的 Content-Type 的方法是使用类似这样的 Produces 属性：
[Produces("application/json")]
这是我迄今为止找到的最干净的选项。
英文:
One way to change the response's Content-Type is using the Produces attribute like this:
[Produces("application/json")]
This is the cleanest option I've found so far.
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