@PathVariable is giving 400 Bad Request

Question

I am using path variable and when i hit the request i get 400 BAD Request

URL : http://localhost:8085/testing/v3/w200/http%3A%2F%2Fwww.bildarchivaustria.at%2FPreview%2F15620341.jpg

I don't know why it's not working. It might be something very simple that i am missing. Please help

Here is my code :


@RestController
@RequestMapping("/testing/v3")
public class ControllerV3 
{
@GetMapping(value = "/{size}/{url}")
    public ResponseEntity<byte[]> testByUrl(
            @PathVariable(name="size", value="size" , required = false) String size,
            @PathVariable("url") String url,
            WebRequest webRequest, HttpServletResponse response) {
        long startTime = 0;
        if (LOG.isDebugEnabled()) {
            startTime = System.nanoTime();
            LOG.debug("url = {}, size = {}", url, size);
        }
// i do other process here and return the image or video
}
}

How should this be compilable, you don't even return something in your method. — Smutje, Aug 30 '19 at 11:28
I could image that have an optional `PathVariable` as the first one is also a bad idea — Martin van Wingerden, Aug 30 '19 at 11:30
I also never heard of a `404 BAD Request` i would expect a 404 not found, could you provide some logging maybe a stacktrace? — Martin van Wingerden, Aug 30 '19 at 11:31
Hello all, 404 bad request because somehow it is not able to identify this URL. Ia m sorry there is no stacktrace generated as well. I do return something and have a long process. But First it should identify the URL to proceed — , Aug 30 '19 at 11:35
@MartinvanWingerden even when i remove the optional, i am getting the same error — , Aug 30 '19 at 11:39

score 1 · Accepted Answer · answered Aug 30 '19 at 11:59

For security reasons Apache does not allow any %2Fas part of the path (find out more here).

To get the stuff working replace all %2F with %252F in your URL:

http://localhost:8085/testing/v3/w200/http%3A%252F%252Flocalhost%3A8080%252Ftesting%252Fv3%252Fw200%252Fhttp%3A%252F%252Fwww.bildarchivaustria.at%252FPreview%252F15620341.jpg

The encoding of %2F is -> %252F

@PathVariable is giving 400 Bad Request

1 Answers1