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I cannot validate a string type path variable in Spring Boot app. I tried the suggestions mentioned on How to validate Spring MVC @PathVariable values?, but not working. So, do I have to create a custom validator just for validating a @PathVariable value?

import org.springframework.validation.annotation.Validated;
import javax.validation.constraints.NotNull;

@RestController
@Validated
@RequestMapping("/api/v1")
public class DataController {


    @GetMapping("/employees/{code}")
    public ResponseEntity<ApiResponse<List<Employee>>> findAllByCode(
            // @PathVariable("code") @Valid @NotBlank String code) {
            @PathVariable("code") @NotBlank String code) {
      // ...
    }
}

Any idea about the solution?

Improve this question
2
  • Does anybody else has never used validation ever before? Commented Nov 25, 2022 at 8:45
  • The option from the linked page works fine for me, it looks like you just need to override org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler.handleBindException in a class, which will extend ResponseEntityExceptionHandle and having annotated as @ControllerAdvice. This is just one of the ways. Commented Feb 24, 2023 at 13:06
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