解决ASP.NET Core Mvc文件上传限制问题

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銆€銆€1.搴旂敤绋嬪簭绾у埆璁剧疆

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public void ConfigureServices(IServiceCollection services)
{
services.Configure<FormOptions>(options =>
{
options.MultipartBodyLengthLimit = 60000000;
});
}

銆€銆€2.Action绾у埆璁剧疆

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[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public class RequestFormSizeLimitAttribute : Attribute, IAuthorizationFilter, IOrderedFilter
{
private readonly FormOptions _formOptions;

public RequestFormSizeLimitAttribute(int valueCountLimit)
{
_formOptions = new FormOptions()
{
ValueCountLimit = valueCountLimit
};
}

public int Order { get; set; }

public void OnAuthorization(AuthorizationFilterContext context)
{
var features = context.HttpContext.Features;
var formFeature = features.Get<IFormFeature>();

if (formFeature == null || formFeature.Form == null)
{
// Request form has not been read yet, so set the limits
features.Set<IFormFeature>(new FormFeature(context.HttpContext.Request, _formOptions));
}
}
}

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