微软的Web API返回的文件?使用字节[]? [英] Microsoft Web Api return a file? use byte[]?
问题描述
我想使用的ASP.NET Web API。我希望能够从API下载用C#PDF文件(该API生成)。
我可以只具备API返回一个byte []?并为C#应用程序可我只是做:
字节[] = PDF client.DownloadData(urlToAPI);?
和
File.WriteAllBytes()?
更好的与StreamContent返回的Htt presponseMessage它里面。
下面是例子:
公开的Htt presponseMessage的GetFile(字符串ID)
{
如果(String.IsNullOrEmpty(ID))
返回Request.CreateResponse(的HTTPStatus code.BadRequest); 字符串文件名;
串localFilePath;
INT档案大小; localFilePath = getFileFromID(ID,出的文件,出档案大小); HTT presponseMessage响应=新HTT presponseMessage(的HTTPStatus code.OK);
response.Content =新StreamContent(新的FileStream(localFilePath,FileMode.Open,FileAccess.Read));
response.Content.Headers.ContentDisposition =新System.Net.Http.Headers.ContentDispositionHeaderValue(附件);
response.Content.Headers.ContentDisposition.FileName =文件名;
response.Content.Headers.ContentType =新MediaTypeHeaderValue(应用程序/ PDF格式); 返回响应;
}
UPD 从帕特里奇评论:
如果任何人来到这里找送出去,从一个字节数组,而不是实际文件的回应,你会代替StreamContent想用新的ByteArrayContent(someData)(请参阅here).
I want to use ASP.NET Web API. I want to be able to download a PDF with C# from the API(that the API generates).
Can I just have the API return a byte[]? and for the c# application can I just do:
byte[] pdf = client.DownloadData("urlToAPI");?
and
File.WriteAllBytes()?
Better to return HttpResponseMessage with StreamContent inside of it.
Here is example:
public HttpResponseMessage GetFile(string id)
{
if (String.IsNullOrEmpty(id))
return Request.CreateResponse(HttpStatusCode.BadRequest);
string fileName;
string localFilePath;
int fileSize;
localFilePath = getFileFromID(id, out fileName, out fileSize);
HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK);
response.Content = new StreamContent(new FileStream(localFilePath, FileMode.Open, FileAccess.Read));
response.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment");
response.Content.Headers.ContentDisposition.FileName = fileName;
response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");
return response;
}
UPD from comment by patridge: Should anyone else get here looking to send out a response from a byte array instead of an actual file, you're going to want to use new ByteArrayContent(someData) instead of StreamContent (see here).
这篇关于微软的Web API返回的文件?使用字节[]?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!