ASP.Net - Requested resource does not support http method 'GET'

Question

I'm writing a controller to get the Books with for certain authors with a specific rating. This is the code for the GET method :

public IQueryable<Book> GetBooks(string context)
{
   string rating = context.Split('?')[0];
   string[] authors = context.context.Split('?')[1].Split(',');
   return db.Books.Where(s => authors.Contains(s.AuthorName) && s.Rating == rating);
}

When I run the project and enter this URL :

http://localhost:65239/api/books/5?James,Tom

I get this error:
<Error> <Message> The requested resource does not support http method 'GET'. </Message> </Error>

What am I doing wrong?

Answer 1

Try this;

public JsonResult GetBooks(string context)
{
   string rating = context.Split('?')[0];
   string[] authors = context.context.Split('?')[1].Split(',');
   var books = db.Books.Where(s => authors.Contains(s.AuthorName) && s.Rating == rating);
   return Json(books, JsonRequestBehavior.AllowGet); 
}

Answer 2

原来我使用了错误的URL格式。

http://localhost:65239/api/books?context=5?James,Tom