Hibernate validation message from properties - spring

Question

I am trying to get a custom message from property file, but I can't.
My configs:
#Bean
public LocalValidatorFactoryBean localValidatorFactoryBean() {
LocalValidatorFactoryBean bean = new LocalValidatorFactoryBean();
bean.setValidationMessageSource(messageSource());
return bean;
}
#Bean
public MessageSource messageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename("classpath:/messages/ValidationMessages");
messageSource.setDefaultEncoding("UTF-8");
messageSource.setFallbackToSystemLocale(true);
return messageSource;
}
Class which must be valid:
public class NewUserDto {
#NotEmpty(message = "{NotEmpty.newUserDto.email}")
private String email;
}
Value in my property file: NotEmpty.newUserDto.email = Some value.
But instead Some value I get {NotEmpty.newUserDto.email}, why it is so?

Answer 1

If you are using java configuration. You can refer to the below example:
Delcare a bean like this
public class Employee implements Serializable {
#Email #NotEmpty
private String email;
}
A custom message is located in a file messages.properties
Email.employee.email=Please provide a valid Email address
and this file is added in WebMvcConfigurerAdapter
#Bean
public MessageSource messageSource() {
ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
messageSource.setBasename("messages");
return messageSource;
}
I found this example from the post Spring MVC Form Validation Annotation Example

Answer 2

If I understood correctly, you are trying to inject a String message from properties file, which in it, you have an entry of:
NotEmpty.newUserDto.email
And it got a value that should act as your message error in case of bean validation failure.
In this case:
First, use expression language to inject the property. like this:
#Component
public class NewUserDto {
#Value("${NotEmpty.newUserDto.email}")
private String msg;
#NotEmpty(message = msg)
private String email;
}
Don't forget to annotate your class with #Component annotation and turn it to bean in order to do this #Value injection. of course, you'll have to add to your configuration file the next:
<context:component-scan base-package="package.to.NewUserDto" />
You can try to do it directly, like this:
#Component
public class NewUserDto {
#NotEmpty(message = #Value("${NotEmpty.newUserDto.email}"))
private String email;
}