swagger springfox - bean validation JSR 303 not recognize

Question

I followed this tutorial https://springframework.guru/spring-boot-restful-api-documentation-with-swagger-2/ to generate a swagger documentation. It's working but when I try to add some validation in my bean I don't find the information in the documentation:

@ApiOperation(value = "Creates a product",
        notes="Populates a product instance bla bla")
@RequestMapping(value = "/add", method = RequestMethod.POST, produces = "application/json")
public ResponseEntity saveProduct(  @Valid @RequestBody Product product){
    productService.saveProduct(product);
    return new ResponseEntity("Product saved successfully", HttpStatus.OK);
}

My entity with the validations annotations :

@Entity
public class Product {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
   // @ApiModelProperty(notes = "The database generated product ID")
    private Integer id;
    @Version
   // @ApiModelProperty(notes = "The auto-generated version of the product")
    @NotNull
    private Integer version;
   // @ApiModelProperty(notes = "The application-specific product ID" )
    private String productId;
   // @ApiModelProperty(notes = "The product description")
    @NotBlank
    @Size(max = 50)
    private String description;
   // @ApiModelProperty(notes = "The image URL of the product")
    private String imageUrl;
   // @ApiModelProperty(notes = "The price of the product", required = true)
    @NotNull
    private BigDecimal price;

But when I check the documentation I don't have those validation information:

Here https://github.com/springfox/springfox/issues/987 they say that we need to update our dependencies and it's what I did :

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>2.8.0</version>
</dependency>
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>2.8.0</version>
</dependency>

Did I miss something in the configuration? Any idea to help me ?

Answer 1

I found the solution in this post : http://vojtechruzicka.com/documenting-spring-boot-rest-api-swagger-springfox/. All is explained :

Unfortunately, JSR-303 based documentation does not work out of the box, you need an additional dependency:

<dependency>
   <groupId>io.springfox</groupId>
   <artifactId>springfox-bean-validators</artifactId>
   <version>2.8.0</version>
</dependency>

And you need to import BeanValidatorPluginsConfiguration configuration file on top of your swagger configuration class:

@Configuration
@EnableSwagger2
@Import(BeanValidatorPluginsConfiguration.class)
public class SpringFoxConfig {
  ...
}

Thank you @vojtech-ruzicka https://stackoverflow.com/users/4560142/vojtech-ruzicka