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Validation errors not picked up from resource file

I followed this link to implement a domain validation. However when I attempt to move the messages into a properties file, it doesn't work. I feel like it might be an issue with my validator implementation but can't quite figure out what is wrong. I followed a Baeldung article for this. The output doesn't get parsed and instead is displayed as "{modeltype.size.max}".
My domain object property looks like this:
#Column(name = "MODEL_TYPE")
#Size(max = 20, message = "{modeltype.size.max}")
private String modelType;
I also defined Beans for both the MessageSource & LocalValidatorFactoryBean like so:
#Bean
public MessageSource messageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename("classpath:messages");
messageSource.setDefaultEncoding("UTF-8");
return messageSource;
}
#Bean
public LocalValidatorFactoryBean getValidator() {
LocalValidatorFactoryBean bean = new LocalValidatorFactoryBean();
bean.setValidationMessageSource(messageSource());
return bean;
}
My domain-specific validator method defined inside of the domain itself and called in the constructor:
private void validate(Equipment equipment) {
EntityValidator<Equipment> equipmentEntityValidator =
new AbstractEntityValidator<>(Validation
.buildDefaultValidatorFactory()
.getValidator());
Set<ConstraintViolation<Equipment>> failedValidations =
equipmentEntityValidator.validate(equipment);
List<String> failedValidationMessages = new ArrayList<>();
failedValidations.forEach(failedValidation -> failedValidationMessages.add(failedValidation.getMessage()));
if (!failedValidationMessages.isEmpty()) throw new ValidationException(String.join(",", failedValidationMessages));
}
This exception is then handled inside of the GlobalExceptionHandler and part of the response DTO are the constraint violations.

MessageSource doesn't reload properties file

There is a messageSource Bean:
#Bean
public MessageSource messageSource(){
ReloadableResourceBundleMessageSource messageSource=new ReloadableResourceBundleMessageSource();
messageSource.setDefaultEncoding("UTF-8");
messageSource.setBasenames("classpath:/messages/messages");
return messageSource;
}
I have read somewhere that If I use ReloadableResourceBundleMessageSource messageSource shouldn't be cached and everytime look into the properties file if theere is particular string. Sadly with bean created that way It doesn't work. After compiling If I add some properties Spring Boot won't find it.
Properties file is in /resources/messages/messages.properties and /resources/messages/messages_en.properties .

Try this solution.
First: configure the bean in your web configuration as shown below.
#Bean
public MessageSource messageSource () {
ReloadableResourceBundleMessageSourceExt messageResource =
new ReloadableResourceBundleMessageSourceExt();
messageResource.setAlwaysUseMessageFormat(false);
messageResource.setBasenames("classpath:messages");
messageResource.setDefaultEncoding(CHARACTER_ENCODING);
messageResource.setFallbackToSystemLocale(true);
messageResource.setUseCodeAsDefaultMessage(false);
messageResource.setCacheSeconds(1); // by default it set to -1 which means cache
// forever messageSourse.
// set 0 to check reload messeageSource on
// every getMessageSource request but reload
// only those files which last modified
// timestamp is changed.
// value greater than 1 is treated as the
// time interval between reload.
return messageResource;
}
Second: create a class which extends ReloadableResourceBundleMessageSource to expose the protected method of its inner class as shown below.
public class ReloadableResourceBundleMessageSourceExt extends ReloadableResourceBundleMessageSource {
public Properties getPropertiesByFileName(String fileName){
return super.getProperties(fileName).getProperties();
}
}
Third: Now Autowired the bean like this.
#Service
public class MyMessagesBundleService {
final private String fileName = "classpath:messages";
#Autowired
ReloadableResourceBundleMessageSourceExt messageSource;
Properties properties = messageSource.getPropertiesByFileName(this.fileName);
// now change the properties and saved it.
// after saved call clear cache and get again.
messageSource.clearCache();
}

spring get messagesource in java based configuration

I want to get messages loaded by messageSource bean, and want to use them in application context (java-based #Configuration class).
But I do not know how to.
I worked like below:
#Configuration
#ComponentScan(basePackages={
"com.musicovery12.study.service",
"com.musicovery12.study.dao"
})
public class ApplicationContext {
#Bean
public MessageSource messageSource(){
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename("classpath:META-INF/application.properties");
messageSource.setUseCodeAsDefaultMessage(true);
messageSource.setDefaultEncoding("UTF-8");
return messageSource;
}
#Bean
public DataSource dataSource(){
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName(/*${db.driver-name}*/); // I want to set the parameter as given message stored by messageSource
return dataSource;
}
}
Any suggestion?
Thanks.

#Bean
public DataSource dataSource(){
String driverClassName = messageSource().getMessage(...);
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName(driverClassName); // I want to set the parameter as given message stored by messageSource
return dataSource;
}

How to inject MessageSource resource bundle with Spring?

Hi have two different message bundles. How can I directly inject them into a spring bean MessageSource?
The following does not work:
#Resource(name = "${messages_one_EB.properties}")
private MessageSource messageSourceOne;
#Resource(name = "${messages_two_EN.properties}")
private MessageSource messageSourceTwo;
Result: java.lang.IllegalArgumentException: Could not resolve placeholder 'messages_one_EB.properties'
Probably it works similar, but how? I could not find any example in the docs.
Both bundles are placed under src/main/resources/

I guess you can declare 2 different beans for your message sources and then inject them by name:
#Bean
public MessageSource messageSource1() {
final ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename("classpath:i18n/messages1");
messageSource.setFallbackToSystemLocale(false);
messageSource.setCacheSeconds(0);
return messageSource;
}
#Bean
public MessageSource messageSource2() {
final ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename("classpath:i18n/messages2");
messageSource.setFallbackToSystemLocale(false);
messageSource.setCacheSeconds(0);
return messageSource;
}
Then in your class:
#Resource(name = "messageSource1")
private MessageSource messageSourceOne;
#Resource(name = "messageSource2")
private MessageSource messageSourceTwo;

Spring MVC: No message found under code 'label.description' for locale 'en_us'

I'm trying to implement internationalisation on my project, however I cannot resolve my BaseName, so far this is my AppConfiguration class methods:
#Bean
public MessageSource messageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();`
messageSource.setBasename("messages/");
messageSource.setDefaultEncoding("UTF-8");
return messageSource;
}
#Bean
public LocaleResolver localeResolver() {
CookieLocaleResolver resolver = new CookieLocaleResolver();
resolver.setDefaultLocale(new Locale("en_US"));
resolver.setCookieName("myLocaleCookie");
resolver.setCookieMaxAge(4800);
return resolver;
}
#Override
public void addInterceptors(InterceptorRegistry registry) {
LocaleChangeInterceptor interceptor = new LocaleChangeInterceptor();
interceptor.setParamName("mylocale");
registry.addInterceptor(interceptor);
}
And this is my project structure:
Project Structure
Any ideas what I'm doing wrong? I also trying to change my baseName to classpath:messages but nothing. Thank you.

try this:
#Bean
public MessageSource messageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename("classpath:/messages/messages");
messageSource.setDefaultEncoding("UTF-8");
return messageSource;
}
and rename your en_us.properties to messages_en_us.properties

just add this line to your application.properties
spring.messages.basename=validation