Spring Controller return view or empty string to ajax request

Question

I'm making an ajax request and I have two situations, where if everything is ok I return a page which will be rendered in a modal else return empty string and don't show any modal at all.

Here is a sample of how should my controller look like:

@PostMapping(value = "/path")
    public String serve(final Model model)
{
    if (everything_fine)
    {
        return "path_to_page_which_will_be_handled_by_view_controller";
    }

    return StringUtils.EMPTY;
}

and the ajax request is something like this:

    $.ajax({
        type: 'POST',
        url: '/path',
            error: function (data) {
                //handle error
            },
            success: function (data) {
                 if (data) {
                     // render response in modal
                 } else {
                     // show some other stuff
                 }
            }
    });

For the situation where jsp is returned request works fine, when empty string is returned I get 404 and ajax request goes on the error branch when finished. I guess this is because view controller doesn't find any view for the empty string returned, do you have any idea how can I accomplish my scenario?

zond · Accepted Answer · 2020-01-23 13:51:41Z

0

You trying to return empty path to browser and you get 404. It's normal. Try to return String with path to controller that returns empty page:

@PostMapping(value = "/path")
public String serve(final Model model)
{
if (everything_fine)
{
    return "path_to_page_which_will_be_handled_by_view_controller";
}
return "path_to_EMPTY_page_which_will_be_handled_by_view_controller";
}

answered Jan 23, 2020 at 13:51

zond

1,4801 gold badge22 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

user1936584 · Accepted Answer · 2020-01-23 15:12:49Z

0

Eventually split this in two requests, one to get the data on which deciding if the modal will be shown or not, and finally request the modal contents if needed.

answered Jan 23, 2020 at 15:12

user1936584

Collectives™ on Stack Overflow

Spring Controller return view or empty string to ajax request

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related