Easy way to resolve available messages from a set of codes

Question

I'm working on a Spring MVC project (Spring Boot v1.4.2) and I need to resolve some error codes from the localized message.properties file.

For example, one of the validation errors I get is this:

org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'signUpDTO' on field 'email': rejected value [[email protected]]; codes [EmailAlreadyUsed.signup.signUpDTO.email,EmailAlreadyUsed.signup.email,EmailAlreadyUsed.signup.java.lang.String,EmailAlreadyUsed.signup]; arguments []; default message [null]

As you can see a list of error codes is generated starting from the basic error code (EmailAlreadyUsed.signup) :

codes [EmailAlreadyUsed.signup.signUpDTO.email,EmailAlreadyUsed.signup.email,EmailAlreadyUsed.signup.java.lang.String,EmailAlreadyUsed.signup];

I'd like to check if any of these codes are defined in my message.properties and resolve the message associated to it.

At the moment I'm using this utility class that resolve a single code:

@Component
public class LocalizedMessageProvider {

    @Autowired
    private MessageSource messageSource;

    public String getMessage(String code , Object... arguments) {
        Locale locale = LocaleContextHolder.getLocale();
        return messageSource.getMessage(code, arguments, locale);
    }
}

Is there some out-of-the-box utility in Spring or should I simply iterate through every error code?

Answer 1

I just discovered that MessageSource interface declares this method:

getMessage(MessageSourceResolvable resolvable, Locale locale)

that accepts a MessageSourceResolvable object (therefore any validation error built internally by Spring) and works in a way similar to what I need.

It takes every error code generated for the validation error and check if at least one associated message is declared in the message resource bundle.