Spring Boot 应用程序的内部化

Question

Sorry for my english. I am working on a spring boot application and I have the following situation. I implemented internalization and I created a following configuration class

@EnableWebMvc
@Configuration
public class WebMvcConfiguration implements WebMvcConfigurer {   

  @Bean
    public LocaleResolver localeResolver() {
        AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver();
        localeResolver.setDefaultLocale(new Locale("es_ES"));
        return localeResolver;
    }  
   
    @Bean
    @Override
    public Validator getValidator() {
        LocalValidatorFactoryBean bean = new LocalValidatorFactoryBean();
        bean.setValidationMessageSource(resourceBundleMessageSource());
        return bean;
    }

    
    @Bean("messageSource")
    public MessageSource resourceBundleMessageSource() {
        ReloadableResourceBundleMessageSource messageSource
                = new ReloadableResourceBundleMessageSource();
        messageSource.setBasename("classpath:messages");
        messageSource.setDefaultEncoding("UTF-8");
        return messageSource;
    }
    

}

Also I have two properties files messages.properties and messages_us.properties .

And I defined a User entity class like this:

@Entity
@Table(name = "users", uniqueConstraints = @UniqueConstraint(columnNames = "email"))
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
public class User implements Serializable {    

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id", table = "users", nullable = false)
    private Long id;

    @NotEmpty(message = "{not.field.empty}")
    @NotNull(message = "{not.field.empty}")
    @Column(name = "name")
    private String name;

    @Column(name = "lastname", table = "users", nullable = false, length = 100)
    private String lastname;

    @Column(name = "birthday", table = "users")
    @Temporal(TemporalType.DATE)
    @NotNull(message = "birthday {not.empty.field}")
    private Date birthday;

}

When I try to test validation by calling following endpoint

    @PostMapping("/users")
    @ResponseStatus(HttpStatus.CREATED)
    public ResponseEntity<?> createUser(@Valid @RequestBody User user) {
//code...
}

If validation failes, I'm getting all error messages correctly.

{
    "timestamp": 1599168856694,
    "status": 400,
    "error": "Not validate field",
    "message": [
        "birthday Obligatory filed"
    ],
    "path": "/api/v1/users"
}

But when I use @Valid in a Service class like this

    @Override
    @Transactional()
    public User saveUser(@Valid User user) { 
//code...
}

I don't get the translated messages error messages.

{
    "timestamp": 1599169130869,
    "status": 400,
    "error": "Not validate field",
    "message": [
        "roles {not.empty.field}",
        "birthday {not.empty.field}"
    ],
    "path": "/api/v1/users"
}

Does anybody knows what's the issue here? Thanks

Answer 1

Assuming your saveUser service method is getting called only from the REST API endpoint method "createUser" which is already validating the USER entity. I do not see any need for using @Valid in the service method argument as well. The rest endpoint is already doing the needful.

This post might help you - https://auth0.com/blog/exception-handling-and-i18n-on-spring-boots-apis/