我一直很喜欢 ServiceStack 中的干净约定,但是最近遇到了一个令人烦恼的问题。用户加载“创建”页面以创建“广告”,然后发布表单数据。术语服务器应处理发布的数据并在成功后重定向用户。
我用调试器运行它。POST 方法完成没有错误,但是服务完成后服务器总是返回错误:
Object reference not set to an instance of an object. AT
CompiledRazorTemplates.Dynamic.dfdcdedabeabca.Execute() at ServiceStack.Razor.Templating.TemplateService.ExecuteTemplate[T](T model, String name, String defaultTemplatePath, IHttpRequest httpReq, IHttpResponse httpRes) at ServiceStack.Razor.RazorFormat.ProcessRazorPage(IHttpRequest httpReq, ViewPageRef razorPage, Object dto, IHttpResponse httpRes) at ServiceStack.Razor.RazorFormat.ProcessRequest(IHttpRequest httpReq, IHttpResponse httpRes, Object dto) at ServiceStack.WebHost.Endpoints.Formats.HtmlFormat.<>c__DisplayClass1.<SerializeToStream>b__0(IViewEngine x) at System.Linq.Enumerable.Any[TSource](IEnumerable
1 个来源,功能2 predicate) at ServiceStack.WebHost.Endpoints.Formats.HtmlFormat.SerializeToStream(IRequestContext requestContext, Object response, IHttpResponse httpRes) at ServiceStack.Common.Web.HttpResponseFilter.SerializeToStream(IRequestContext requestContext, Object response, Stream responseStream) at ServiceStack.Common.Web.HttpResult.WriteTo(Stream responseStream) at ServiceStack.WebHost.Endpoints.Extensions.HttpResponseExtensions.WriteToOutputStream(IHttpResponse response, Object result, Byte[] bodyPrefix, Byte[] bodySuffix) at ServiceStack.WebHost.Endpoints.Extensions.HttpResponseExtensions.WriteToResponse(IHttpResponse response, Object result, ResponseSerializerDelegate defaultAction, IRequestContext serializerCtx, Byte[] bodyPrefix, Byte[] bodySuffix)
我已经将代码归结为这一点以隔离问题:
[Route("/ad/create", Verbs = "GET")]
public class AdCreateViewModelCriteria
{
}
[Route("/ad/create", Verbs = "POST")]
public class AdCreate
{
//some things
}
public class AdCreateService:Service
{
//the error occurs AFTER this method is complete
public object Post(AdCreate ac)
{
try
{
//do some stuff
return new HttpResult()
{
StatusCode = HttpStatusCode.Redirect,
Headers ={{HttpHeaders.Location, "/home"}}
};
}
catch (Exception e)
{
return new HttpResult(e)
{
StatusCode = HttpStatusCode.InternalServerError
};
}
}
[DefaultView("adcreate")]
public object Get(AdCreateViewModelCriteria criteria)
{
return AdCreateViewModel.Load(criteria,Db);
}
}