在ASP.NET MVC 2中将视图呈现为字符串

Question

We need to render an ActionResult to a string to add pages to our internal search engine index. We settled on this solution to render to string .

I've run into a problem with the ExecuteResult call used to process the View.

Code Snippet:

var oldController = controllerContext.RouteData.Values["controller"];
controllerContext.RouteData.Values["controller"] = 
                  typeof(TController).Name.Replace("Controller", "");

viewResult.ExecuteResult(controllerContext); // this line breaks

I receive the following error:

"Object reference not set to instance of object" error.

I've confirmed viewResult is not null, so the exception has to be thrown internally in ExecuteResult .

What could we be missing?

Answer 1

I figured it out. The issue with ExecuteResult wasn't working as expected was because I hadn't mocked the ControllerContext properly. I was able to solve the issue by mocking the controllercontext as described in this SO post:

Mocking Asp.net-mvc Controller Context

Hope this post helps someone in the future if they're trying to do something similar.

Answer 2

我自己没有尝试过，但Phil Haack确实提出了一种方法，在这里输入一个视图到字符串 MVC。

Answer 3

MVCContrib有一个BlockRenderer类 ，可以对这种情况有所帮助。

Answer 4

不是你的问题的直接答案，但为什么你将整个视图作为字符串呈现给你的搜索索引，而不是a）将数据本身推送到索引（LINQ to Lucene允许你这样做w /属性）或b ）将工作卸载到一个单独的进程，该进程使用一组权限来爬行前端？