我正在尝试使用敲除v3.2.0,webapi,odata下载文件,并在尝试将文件作为HttpResponseMessage返回时收到此错误。
这是我的控制器代码:
[EnableQuery]
public HttpResponseMessage GetAttachment([FromODataUri] int key)
{
try
{
DataAccess.Attachment a = db.Attachments.Where(x => x.AttachmentId == key).FirstOrDefault();
HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
MemoryStream memStream = new MemoryStream();
memStream.Write(a.AttachmentData, 0, a.AttachmentData.Length);
result.Content = new StreamContent(memStream);
result.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");
result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
result.Content.Headers.ContentDisposition.FileName = a.AttachmentName;
return result;
//return Request.CreateResponse(HttpStatusCode.OK, result);
}
catch (Exception exception)
{
Request.CreateErrorResponse(HttpStatusCode.InternalServerError, exception.Message);
return null;
}
}
这就是我尝试从JavaScript下载的方式:
self.downloadDocument = function (attachmentId) {
var serviceRequestUrl = dbhdd.buildUrl.buildSPContextUrl("/api/Attachments(" + 1 + ")");
window.location.href = serviceRequestUrl;
};
这给了我这个错误-查询不能应用于类型为'System.Net.Http.StreamContent'的响应内容。响应内容必须为ObjectContent。
我对此比较陌生。修复此/替代方法的任何指导将受到高度赞赏。
答案 0 :(得分:0)
所以我删除了[EnableQuery],它在IE和Chrome中都可以使用!