/// <summary>
/// 询问服务器，判断文件是否为图片文件
/// </summary>
/// <param name="fileId"></param>
/// <returns></returns>
public static bool IsImageFile(string fileId)
{
var restTemplate = new RestTemplate();
restTemplate.MessageConverters.Add(new NJsonHttpMessageConverter());
var headForHeaders = restTemplate.HeadForHeaders(Resources.fileInfoUrl + "/" + fileId);
var singleValue = headForHeaders.GetSingleValue("isImage");
return(!string.IsNullOrWhiteSpace(singleValue) && singleValue.ToUpper().Equals("TRUE"));
}
public void HeadForHeaders()
{
Uri requestUri = new Uri("http://example.com");
HttpMethod requestMethod = HttpMethod.HEAD;
Expect.Call <IClientHttpRequest>(requestFactory.CreateRequest(requestUri, requestMethod)).Return(request);
ExpectGetResponse();
Expect.Call <bool>(errorHandler.HasError(requestUri, requestMethod, response)).Return(false);
HttpHeaders responseHeaders = new HttpHeaders();
Expect.Call <HttpHeaders>(response.Headers).Return(responseHeaders).Repeat.Any();
mocks.ReplayAll();
HttpHeaders result = template.HeadForHeaders("http://example.com");
Assert.AreSame(responseHeaders, result, "Invalid headers returned");
}
