CODEWITHSUNDEEP
springspring-mvc
rustyx
rustyx

Reputation: 85382

Spring optional @PathVariable?

Is it possible to somehow get a hold of a @PathVariable in a @ControllerAdvice given that the PathVariable is only present in some requests?

If this was in a Controller, I could write 2 different Controllers. But a ControllerAdvice always applies to all requests. I can't have a ControllerAdvice apply to only Controllers where the PathVariable is defined.

Upvotes: 2

Views: 1898

Answers (2)

OscarSanhueza
OscarSanhueza

Reputation: 317

this answer is ok, but it took me a while to found out that you need to add the @ModelAttribute annotation before the function. Also is good to know that you can inject any variable that you use in the controller @RequestMapping side. So for example the whole class will look like

@ControllerAdvice(basePackages = {"test.web.controller"}) 
public class SomeAdvicer {
    @ModelAttribute
    public void advise(@PathVariable Map<String, String> pathVariables, SomeOtherClass ctx) {
        if (pathVariables.containsKey("something")) {
            if (!pathVariables.get("something").equals(ctx.getSomething())){
                throw new Exception("failed");
           }
        } 
   }
}

When your controller looks like

@RequestMapping(method = RequestMethod.PUT, value = "/{something}")
@ResponseBody
public ResponseEntity<test> updateDemo(
        @PathVariable(value = "invoicerId") 
        @RequestBody RequestMessage requestBodyMessage,
        SomeOtherClass ctx) throws RestException {  ....  }

Upvotes: 1

Paul Wardrip
Paul Wardrip

Reputation: 984

You can inject the Map of path variables and check for the existence of a key.

public void advise(@PathVariable Map<String, String> pathVariables) {
    if (pathVariables.containsKey("something")) {
        String something = pathVariables.get("something");
        // do something

    } else {
        // do something else
    }
}

Upvotes: 3

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