How to call url with multiple query string params in FeignClient?

Question

I try to call Google API with multiple query string parameters. And curiously, I can't find a way to do that.

This is my FeignClient :

@FeignClient(name="googleMatrix", url="https://maps.googleapis.com/maps/api/distancematrix/json")
public interface GoogleMatrixClient {

    @RequestMapping(method=RequestMethod.GET, value="?key={key}&origins={origins}&destinations={destinations}")
    GoogleMatrixResult process(@PathVariable(value="key") String key,
                               @PathVariable(value="origins") String origins,
                               @PathVariable(value="destinations") String destinations);

}

The problem is that '&' character of the RequestMapping value is replace by &

How to avoid this ?

Thanks !

Answer 1

All Query parameters will automatically be extracted from the url by a split using the & character and mapped to the corresponding @RequestParam in the method declaration.

So you don't need to specify all the keys the @RequestMapping annotation and there you should only specify the endpoint value.

For your example to work you just need to change your rest-endpoint to:

@RequestMapping(method=RequestMethod.GET)
GoogleMatrixResult process(@RequestParam(value="key") String key,
                           @RequestParam(value="origins") String origins,
                           @RequestParam(value="destinations") String destin);