ASP.NET Web API:非描述性500内部服务器错误

Question

正如标题所说,我从GET请求到IQueryable操作有500个内部服务器错误.错误的主体是空的.我的操作返回结果后发生该错误.

我使用ASP.NET Web API RC.

如何获得该错误的堆栈跟踪？

Answer 1

您可以尝试添加:

GlobalConfiguration.Configuration.IncludeErrorDetailPolicy = 
    IncludeErrorDetailPolicy.Always;

您Application_Start()在Global.asax.此解决方案适用于许多常见错误.

但是,如果您没有获得满意的信息,则应考虑编写l 异常过滤器并在全局注册.

这篇文章应该可以帮到你.您需要的核心是编写和注册以下内容:

public class NotImplExceptionFilter : ExceptionFilterAttribute {
  public override void OnException(HttpActionExecutedContext context) {
     if (context.Exception is NotImplementedException) {
       context.Response = new HttpResponseMessage(HttpStatusCode.NotImplemented);
    }
  }
}

Answer 2

发布RC后,此问题已得到修复,除了500内部服务器错误之外,您还将收到错误详细信息.(仅针对Web主机方案修复此问题).

您可以执行以下操作以获取格式化程序的WriteToStream方法期间可能发生的实际异常的详细信息.

ObjectContent<IEnumerable<Product>> responseContent = new ObjectContent<IEnumerable<Product>>(db.Products.Include(p => p.ProductSubcategory).AsEnumerable(), new XmlMediaTypeFormatter()); // change the formatters accordingly

            MemoryStream ms = new MemoryStream();

            // This line would cause the formatter's WriteToStream method to be invoked.
            // Any exceptions during WriteToStream would be thrown as part of this call
            responseContent.CopyToAsync(ms).Wait();