Returning ContentResult for Ajax Response has extra tags in .NET MVC controller_问答_开发者

Returning ContentResult for Ajax Response has extra tags in .NET MVC controller

开发者 https://www.devze.com 2023-01-24 05:13 出处：网络

I have a Controller Action that is trying to return plain text to an AJAX call.E.G.- [HttpPost] public ActionResult SubmitAttachment(int id, HttpPostedFileBase theFile){

I have a Controller Action that is trying to return plain text to an AJAX call. E.G.-

[HttpPost]
public ActionResult SubmitAttachment(int id, HttpPostedFileBase theFile){
...
...
   return Content("Success");
}

In my javascript function which is doing the ajax call, I am expecting the response text to just be "Success", but I'm getting "<head></head><body>Success</body>" instead.

In 99% of my other controller actions, I don't have this issue. The only thing that I can think of that makes this different is because the AJAX call to "SubmitAttachment" is a form POST with the "enctype=multipart/form-data", where as the other AJAX calls aren't uploading any files.

Has anyone encountered this before? If so...how would I just have it return plain text开发者_StackOverflow中文版?

NOTE: I have also tried return Content("Success", "text/plain"), but that just adds additional <pre></pre> tags around the "Success" string.

Unable to reproduce the behavior:

Controller:

public class HomeController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Index(int id, HttpPostedFileBase theFile)
    {
        return Content("Success", "text/plain");
    }
}

View:

<script type="text/javascript" src="<%: Url.Content("~/scripts/jquery-1.4.1.js") %>"></script>
<script type="text/javascript">
    $(function () {
        $('form').submit(function () {
            $.ajax({
                url: this.action,
                type: this.method,
                data: $(this).serialize(),
                success: function (result) {
                    alert(result);
                }
            });
            return false;
        });
    });
</script>

<form action="/" method="post" enctype="multipart/form-data">
    <input type="text" name="id" value="4" />
    <input type="submit" value="OK" />
</form>

When the form is submitted the server returns only "Success".

I would do what bzlm suggested, using fiddler to test it out to make sure those tags are actually coming back that way. If they still are, try returning a plain string instead. Set the return type to string and then return "success" without the Content(). If you are still getting tags around it when returning a string then you are in an alternate reality where things that are not possible are somehow possible.