Spring Controller Mapping value regex

Question

I have a spring controller method

@GetMapping(value = {"{name}"})
public String index(ModelMap model, @PathVariable Optional<String> name)

I would like everything to go through this method except anything that contains a period. So something like /main.css will be rejected while something like /maincss will be allowed. Is there any way I can do that?

I understand that I can simply move all my resources file to resources path like /resources/main.css and the problem is fixed, or I can change up the code so that I have two methods, one for / and one for /name/{name}. But for educational purposes I was wondering if I can have controller apply to everything except a certain regex. Like for example what if I want the controller to accept everything except a string that contains a word Norris.

Is there anyway to apply regex or some sort of rules to mapping value?

You can apply interceptor logic.

Rajeev Ranjan
– Rajeev Ranjan

2020-07-16 08:10:12 +00:00
Commented Jul 16, 2020 at 8:10 — Rajeev Ranjan
– Rajeev Ranjan, Commented Jul 16, 2020 at 8:10

Michiel · Accepted Answer · 2020-07-16 16:40:29Z

1

You can use the format varName:regex (where colon ":" is the separator between the two) to indicate a regex check to be used on the variable:

@GetMapping(value = {"{name:^((?!Norris).)*$}"})
public String index(ModelMap model, @PathVariable Optional<String> name)

However, since your problem might be related to resources:

I understand that I can simply move all my resources file to resources path like /resources/main.css

You could also try to configure a ResourceHandlerRegistry or a ResourceResolver to exclude certain file (patterns) from being served as resources. More info regarding resource handling can be found here.

answered Jul 16, 2020 at 16:40

Michiel

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1 Comment

Quillion Over a year ago

Perfect!!! Sorry resources was just one of the examples for me really. My main point was how to apply regex to the mapping value as title suggested and I just used resources as what I thought a valid example. Your answer helped me with everything and blew me out of the water!!! Love it! Thanks :)

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