将文件附加到WCF REST服务响应

事实证明,我需要的是WCF“原始”模式,如前所述 here . 一般来说,我想这样做:

[OperationContract, WebGet(UriTemplate = "/users/{id}/summary?format={format}"]
public Stream GetUserSummary(string id, string format)
{
    if(format == "pdf")
    {
        WebOperationContext.Current.OutgoingResponse.ContentType = "application/pdf";
        return new MemoryStream(CreatePdfSummaryFileForUser(id));
    }
    else
    {
        // XML or JSON serialization.  I can't figure out a way to not do this explicitly, but my use case involved custom formatters anyway so I don't care.
    }
}

理论上,您可以使用多部分内容的mime类型(请参见 http://www.faqs.org/rfcs/rfc2387.html )但是,在XML/JSON响应中返回URL要容易得多,客户机可以执行一个GET ON链接来返回文件。