如何响应文件流和json对象作为Web API的单一响应

Question

Web API， 我当前的Web API正在响应具有2个属性的JSON对象，如下所示。 我想：1，字段名称：somename

现在，需要在响应中包含一个FILE（.CERT）以及现有的JSON属性。

如何做到这一点？

[授权]

[Route("getfileAndProperties")] 
public HttpResponseMessage GetTestFile() 
{ 
    HttpResponseMessage result = null; 
    var localFilePath = HttpContext.Current.Server.MapPath("~/timetable.cer"); 

    var p = new Person() {Id=1,userField="name"}; 
//need to include this Person object into response along with file. 
    if (!File.Exists(localFilePath)) 
    { 
     result = Request.CreateResponse(HttpStatusCode.Gone); 
    } 
    else 
    { 
     // Serve the file to the client 
     result = Request.CreateResponse(HttpStatusCode.OK); 
     result.Content = new StreamContent(new FileStream(localFilePath, FileMode.Open, FileAccess.Read)); 
     result.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment"); 
     result.Content.Headers.ContentDisposition.FileName = "SampleImg";     
    } 

    return result; 
} 

Answer 1

实测值使用文件的Base64String转化率和溶液包括入JSON响应。

谢谢