Spring 4 Hibernate validator localized messages

Question

I try to get working localization with custom hibernate messages but I can't make it work. My class that is validated looks like this:

@Entity
@Table(name = "USERS")
public class UserEntity extends AbstractBaseEntity implements UserDetails {

    @NotNull
    @Column(unique = true, nullable = false)
    @Size(min = 5, max = 30)
    private String username;

This is part of my spring configuration:

<!-- Localization of hibernate messages during validation!-->
<bean id="validationMessageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
    <property name="basename" value="classpath:validation" />
</bean>

<bean name="validator"  class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
    <property name="validationMessageSource">
        <ref bean="validationMessageSource"/>
    </property>
</bean>

In resources I have two validations files: validation_en.properties and validation_pl.properties Here is example entry:

NotNull.UserEntity.username=Username can't be empty!

And when I am displaying validation errors I see standard message "may not be null" instead of my custom and localised one. Wham I am doing wrong? Thanks in advance for help, Best Regards

Answer 1

You need to do is @NotNull(message = "{error.username.required}")

@Entity
@Table(name = "USERS")
public class UserEntity extends AbstractBaseEntity implements UserDetails {

@NotNull(message = "{error.username.required}")
@Column(unique = true, nullable = false)
@Size(min = 5, max = 30)
private String username;

In validation_en.properties properties file in your resource folder

error.username.required=Username can't be empty!

In spring configuration:

<mvc:annotation-driven validator="validator">
</mvc:annotation-driven>

 <!-- Localization of hibernate messages during validation!-->
 <bean id="validationMessageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
    <property name="basename" value="classpath:validation" />
 </bean>

 <bean name="validator"  class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
    <property name="validationMessageSource">
        <ref bean="validationMessageSource"/>
    </property>
</bean>

Also leave a comment if this does not work for you. So I can help you further.

Answer 2

For anyone who has also problems to get the validator messages localized. Maybe this helps.

My property files for localization are located in src/main/resources/lang/ and are called validation.properties

The @EnableWebMvc imports the Spring MVC configuration from org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport and you can then override individual methods. (for more details see the API doc )

Add this to your Java Spring configuration file and your validation messages should get localized correctly:

@Configuration
@EnableWebMvc
@ComponentScan
public class MvcWebConfig extends WebMvcConfigurerAdapter {

// other configurations may be here ...

    @Bean( name = "validationMessageSource" )
    public ReloadableResourceBundleMessageSource validationMessageSource() {
        ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
        messageSource.setBasename("classpath:lang/validation");
        messageSource.setCacheSeconds(10); // reload messages every 10 seconds
        return messageSource;
    }

    @Override
    public Validator getValidator() {
       LocalValidatorFactoryBean validator = new LocalValidatorFactoryBean();
       validator.setValidationMessageSource((MessageSource) validationMessageSource());
       return validator;
    }
}

Answer 3

I think, that validationMessageSource does not find the files:

• When you pace the files in the src/main.webapp/WEB-INF folder then the Remove the precursory / ( WEB-INF/validation instead /WEB-INF/validation ):

• When you place the files in the resource folder, then use the classpath prefix: classpath:validation

for example:

<bean id="validationMessageSource"
      class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
      <property name="basename" value="classpath:validation" />
</bean>