@Valid annotation is not working in spring boot

Question

Here is the scenario, a controller annotated with @RestController and a PUT method whose @RequestBody argument needs to be validated. I use @Valid annotation on the argument and @NotNull,@Min annotations on bean fields, but they are not working.

Code is here:

the Bean:

public class PurchaseWrapper {
  @DecimalMin(value = "0.00",message = "discount must be positive")
  @NotNull
  private BigDecimal discount;
  @NotNull
  private Long merchandiseId;
  @NotNull
  private Long addressId;
  @Min(1)
  @NotNull
  private Integer count;
}

the Controller

@RestController
@RequestMapping("merchandises")
public class MerchandiseController {

@RequestMapping(value = "purchase",method = RequestMethod.PUT)
public ResponseEntity<RestEntity> purchase(@Valid @Validated @RequestBody PurchaseWrapper purchaseWrapper,
                                           @RequestParam String token){
    return new ResponseEntity<>(merchandiseService.purchase(purchaseWrapper,token),HttpStatus.OK);
}

@Autowired
PurchaseWrapperValidator purchaseWrapperValidator;

@InitBinder(value = "purchaseWrapper")
protected void initBinder(WebDataBinder binder) {
    binder.setValidator(purchaseWrapperValidator);
}
}

The pom file:

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    <dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
    </dependency>

I have no idea what's wrong here... And I guess it's the problem that I use @Valid and @Validated annotations both on the same argument. But even though I omit the @Validated annotation, the @Valid is still not working...

Any ideas?

Solution 1

I figured it out... it's because the PurchaseWrapperValidator which implements org.springframework.validation.Validator overrides the default javax.validation.* annotations.

Solution 2

Put a dependency at pom.xml. Or, at start.spring.io select Validation on dependencies.

dependency: groupId org.springframework.boot groupId artifactId spring-boot-starter-validation artifactId