Spring Boot：添加了外部messages.properties但未使用

Question

I have two messages.properties files. One is located inside resources and another one is outside my .jar file in a directory called etc .

This is my PropertiesConfiguration class:

@Configuration
public class PropertiesConfiguration {

    @Bean
    public PropertyPlaceholderConfigurer properties() {
        final PropertyPlaceholderConfigurer ppc = new PropertyPlaceholderConfigurer();
        ppc.setIgnoreResourceNotFound(true);

        final List<Resource> resourceLst = new ArrayList<Resource>();

        resourceLst.add(new FileSystemResource("etc/application.properties"));
        resourceLst.add(new FileSystemResource("etc/messages.properties"));
        resourceLst.add(new FileSystemResource("etc/messages_et.properties"));

        ppc.setLocations(resourceLst.toArray(new Resource[]{}));

        return ppc;
    }
}

In the logs I see this:

11:18:43.764  INFO [main] PropertyPlaceholderConfigurer              - Loading properties file from file [C:\Users\deniss\IdeaProjects\repgen\etc\application.properties]
11:18:43.764  WARN [main] PropertyPlaceholderConfigurer              - Could not load properties from file [C:\Users\deniss\IdeaProjects\repgen\etc\application.properties]: etc\application.properties (The system cannot find the file specified)
11:18:43.764  INFO [main] PropertyPlaceholderConfigurer              - Loading properties file from file [C:\Users\deniss\IdeaProjects\repgen\etc\messages.properties]
11:18:43.764  INFO [main] PropertyPlaceholderConfigurer              - Loading properties file from file [C:\Users\deniss\IdeaProjects\repgen\etc\messages_et.properties]

As I understand my messages.properties from etc is loaded. Although when the application is working, the values from it are not used. They are coming from default messages.properties inside my resources project folder. Am I doing something wrong?

Answer 1

my solution was:

@Configuration   
public class SpringConfiguration {

    @Bean
    public MessageSource messageSource() {
        ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
        messageSource.setBasename("file:/path/to/file/messages");
        messageSource.setCacheSeconds(10); //reload every 10 sec..
        return messageSource;
    }
}

it works perfect on me, remember to omitt the suffix _et.properties on the base name, for example if you have a file named messages_et.properties set base name will result : messageSource.setBasename("file:/path/to/file/messages");

Answer 2

I think there is an answer for this question here: Spring Boot and multiple external configuration files

That worked for me earlier, so it is worth to give it a try!

Answer 3

First Of all , clear about configuration setting of Spring Boot.

In POM.XML, Confirm once Layout as "ZIP"

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>  <!-- added -->
                <layout>ZIP</layout> <!-- to use PropertiesLaunchar -->
            </configuration>
        </plugin>
    </plugins>
</build>

Because ,For the PropertiesLauncher the layout is "ZIP" and make sure avoid to use @EnableAutoConfiguration.

or Use @PropertySource annotation for external properties. ( Refer : Spring Boot PropertySource ).

This Topic already discussed by StackOverflow.

Refer :

Spring Boot: Is it possible to use external application.properties files in arbitrary directories with a fat jar?

Spring @Configuration file with PropertyPlaceholderConfigurer bean doesn't resolve @Value annotation