.net framework webapi swagger 上传文件

 1 public class ImportFileParamType : IOperationFilter
 2     {
 3         [AttributeUsage(AttributeTargets.Method)]
 4         public sealed class SwaggerFormAttribute : Attribute
 5         {
 6             public SwaggerFormAttribute(string name, string description)
 7             {
 8                 Name = name;
 9                 Description = description;
10             }
11             public string Name { get; private set; }
12 
13             public string Description { get; private set; }
14         }
15         public void Apply(Operation operation, SchemaRegistry schemaRegistry, ApiDescription apiDescription)
16         {
17             var requestAttributes = apiDescription.GetControllerAndActionAttributes<SwaggerFormAttribute>();
18             foreach (var attr in requestAttributes)
19             {
20                 operation.parameters = new List<Parameter>
21                 {
22                     new Parameter
23                     {
24                         description = attr.Description,
25                         name = attr.Name,
26                         @in = "formData",
27                         required = true,
28                         type = "file",
29                     }
30                 };
31                 operation.consumes.Add("multipart/form-data");
32             }
33         }
34     }

c.OperationFilter<ImportFileParamType>();

[ImportFileParamType.SwaggerFormAttribute("ImportExcel", "Upload Excel file")]
        [HttpPost]
        public async Task<ApiResult<List<object>>> ReadInProp()
        {

            if (HttpContext.Current.Request.Files.Count <= 0)
                return null;

            var uploadFile = HttpContext.Current.Request.Files[0];
            if (uploadFile == null || uploadFile.InputStream.Length == 0)
                return null;

            var ds = NPOIHelper.RenderDataSetFromExcel(uploadFile.InputStream, new[] { 0 }, 0);
            var dt = ds.Tables[0];

            List<object> objList = new List<object>();
            foreach (DataRow dr in dt.Rows)
            {
                objList.Add(new 
                {
                    Id = dr[0].ToString(),
                    Value = dr[3].ToString()
                });
            }

            return Success(data: objList);

        }