我的Azure Function项目（.NET标准）具有一个名为[HttpGet]
public HttpResponseMessage GetFile()
{
string fileName = @"c:\temp\test.zip";
MemoryStream responseStream = new MemoryStream();
using (FileStream source = File.Open(fileName, FileMode.Open))
source.CopyTo(responseStream);
HttpResponseMessage response = new HttpResponseMessage();
response.Content = new StreamContent(responseStream);
response.StatusCode = HttpStatusCode.OK;
response.Content.Headers.ContentType = new MediaTypeHeaderValue(ContentTypeHelper.Instance.GetFileContentType(fileName));
response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");
response.Content.Headers.ContentDisposition.FileName = fileName;
response.Content.Headers.ContentLength = responseStream.Length;
return response;
}
的类，该类实现了一个接口Startup.cs，只要该类在项目中，就会引发以下错误。如果我在类中显式实现该接口，则可以通过此错误，但是该函数中的其他类将导致相同的问题。
IFunctionStartupStartup.cs
Export: Unable to load one or more of the requested types.
Method 'RegisterDependencies' in type '*****.Startup'
from assembly '*****.AzureFunction, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'
does not have an implementation.
IFunctionStartup.cs
public class Startup : IFunctionStartup
{
public void RegisterDependencies(ContainerBuilder builder, IConfiguration configuration)
{
builder.RegisterModule(new ApplicationRegistrar(configuration));
}
// This explicit interface implementation gets me pass the error,
// but doesn't address the root cause, because other classes will
// start failing with the same error.
//void IFunctionStartup.RegisterDependencies(ContainerBuilder builder, IConfiguration configuration)
//{
// throw new System.NotImplementedException();
//}
}
这是完整的初始化日志：
public interface IFunctionStartup
{
void RegisterDependencies(ContainerBuilder builder, IConfiguration configuration);
}
答案 0 :(得分：1)
我能够解决此问题。根本原因是Microsoft.EntityFrameworkCore.SqlServer 2.2版，目前与Azure函数不兼容。
不幸的是，错误消息与根本原因完全无关，我只能通过反复试验找出不兼容的nuget。
以下是有关如何对其进行故障排除的一些提示：