ASP.NET Core Web API 项目中使用 services.AddMvcCore 的问题
0
悬赏园豆：30
[已解决问题]
解决于 2018-12-21 12:18
如果在 Startup.ConfigureServices 中使用 services.AddMvcCore() ，访问时会出现下面的错误：
'Microsoft.AspNetCore.Mvc.MvcOptions.InputFormatters' must not be empty. At least one 'Microsoft.AspNetCore.Mvc.Formatters.IInputFormatter' is required to bind from the body.
at Microsoft.AspNetCore.Mvc.ModelBinding.Binders.BodyModelBinderProvider.GetBinder(ModelBinderProviderContext context)
请问如何解决？
最佳答案
0
看了一下AddMvc的源码,我觉得你应该还要加上一些初始化的东西
public static IMvcBuilder AddMvc(this IServiceCollection services)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
var builder = services.AddMvcCore();
builder.AddApiExplorer();
builder.AddAuthorization();
AddDefaultFrameworkParts(builder.PartManager);
// Order added affects options setup order
// Default framework order
builder.AddFormatterMappings();
builder.AddViews();
builder.AddRazorViewEngine();
builder.AddRazorPages();
builder.AddCacheTagHelper();
// +1 order
builder.AddDataAnnotations(); // +1 order
// +10 order
builder.AddJsonFormatters();
builder.AddCors();
return new MvcBuilder(builder.Services, builder.PartManager);
}
收获园豆：30
加上 AddJsonFormatters 即可
services.AddMvcCore().AddJsonFormatters();