Question

如何根据返回的错误类型配置ServiceStack以提供特定的错误页面（404,500等）？

目前，我在代码下使用RawHttpHandler来确保对HTML文件的请求进行身份验证。但是，如果用户指定了不存在的文件或端点，我该如何让它返回我的404.html页面。

  this.RawHttpHandlers.Add(httpReq =>
            {
                var session = httpReq.GetSession();

                if(!session.IsAuthenticated) {
                    var isHtmlFileRequest = httpReq.PathInfo.EndsWith(".html");

                    if(isHtmlFileRequest && !files.Any(s => httpReq.PathInfo.ToLower().Contains(s))) {
                        return new RedirectHttpHandler {
                            AbsoluteUrl = "/Login.html"
                        };
                    }
                }

                return null;
            });

Answer 1

Error Handling wiki显示了ServiceStack中Customize Handling of Exceptions的不同方式，例如，您可以将404错误重定向到/404.cshtml：

public override void Configure(Container container)
{
    this.CustomHttpHandlers[HttpStatusCode.NotFound] = 
        new RazorHandler("/404");
}

CustomHttpHandlers可以是任何IServiceStackHandler，它只是一个支持ASP.NET和HttpListener请求的HttpHandler。创建一个的最简单方法是从IServiceStackHandler继承。下面是一个类似于StaticFileHandler的自定义静态文件处理程序的示例，除了它只写入指定的filePath而不是使用HTTP请求路径：

public class CustomStaticFileHandler : HttpAsyncTaskHandler
{
    string filePath;
    public CustomStaticFileHandler(string filePath)
    {
        this.filePath = filePath;
    }

    public override void ProcessRequest(HttpContextBase context)
    {
        var httpReq = context.ToRequest(GetType().GetOperationName());
        ProcessRequest(httpReq, httpReq.Response, httpReq.OperationName);
    }

    public override void ProcessRequest(IRequest request, IResponse response, 
        string operationName)
    {
        response.EndHttpHandlerRequest(skipClose: true, afterHeaders: r =>
        {
            var file = HostContext.VirtualPathProvider.GetFile(filePath);
            if (file == null)
                throw new HttpException(404, "Not Found");

            r.SetContentLength(file.Length); 
            var outputStream = r.OutputStream;
            using (var fs = file.OpenRead())
            {
                fs.CopyTo(outputStream, BufferSize);
                outputStream.Flush();
            }            
        }
    }
}

然后可以正常注册，即：

public override void Configure(Container container)
{
    this.CustomHttpHandlers[HttpStatusCode.NotFound] = 
        new CustomStaticFileHandler("/404.html");
}

servicestack中的自定义错误页面

1 个答案: