Csharp 如何将这个 Swashbuckle .NET 6 操作过滤器转换为可以在 C# ASP.NET Core 中处理多个类类型的通用过滤器

嗯，c.OperationFilter<T>只是一个将FilterDescriptor添加到OperationFilterDescriptors列表中的通用扩展方法.因此，您不必依赖该泛型方法.下面这样的几个修改就可以让你达到这个目标:

首先，将泛型ArraySettingsOperationFilter更改为接受构造函数中的类型的类

public class ArraySettingsOperationFilter : IOperationFilter
{
    private readonly Type type;

    public ArraySettingsOperationFilter(Type type)
    { 
        // you can check this type implements the interface here
        this.type = type;
    }

    public void Apply(OpenApiOperation operation, OperationFilterContext context)
    {
        if (operation.RequestBody != null && operation.RequestBody.Content.TryGetValue("multipart/form-data", out var openApiMediaType))
        {
            var options = new JsonSerializerOptions { WriteIndented = true };
            var array = new OpenApiArray
         {
        new OpenApiString(JsonSerializer.Serialize(Activator.CreateInstance(this.type),options)),
         };
            openApiMediaType.Schema.Properties["Competences"].Example = array;
        }
    }
}

从被标记的班级中获得FilterDescriptor分

 var filterDescriptors = typeof(IMarkerInterface)
        .Assembly.GetTypes()
        .Where(t => t.IsSubclassOf(typeof(IMarkerInterface)) && !t.IsAbstract)
        .Select(r => new FilterDescriptor { Type = typeof(ArraySettingsOperationFilter), Arguments = new object[] { r } })
        .ToArray();
// Arguments array will be used for instantiating ArraySettingsOperationFilter

配置Swaggergen

   builder.Services.AddSwaggerGen(c => c.OperationFilterDescriptors.AddRange(filterDescriptors));

Edit个

如果您的标记类型执行相同的操作，则可以跳过实例化ArraySettingsOperationFilter.

   var filterDescriptors = typeof(IMarkerInterface)
       .Assembly.GetTypes()
       .Where(t => t.IsSubclassOf(typeof(IMarkerInterface)) && !t.IsAbstract)
       .Select(r => new FilterDescriptor { Type = r } )
       .ToArray();