YAML support under PropertiesLoaderUtils

[varunu28]

Enhancements requests

Currently https://github.com/spring-projects/spring-framework/blob/main/spring-core/src/main/java/org/springframework/core/io/support/PropertiesLoaderUtils.java#L92 provides support for parsing XML & .properties file. But it fails to parse if the properties file is defined as YAML.

Right now PropertiesLoaderUtils already checks for XML file extension & it can similarly check for YAML file extension & replace the current parsing logic with a custom implementation.

I agree that currently this can be achieved by providing a custom implementation of PropertySourceFactory as below without the need of any external library dependency

public class YamlPropertySourceFactory implements PropertySourceFactory {

    @Override
    public PropertiesPropertySource createPropertySource(String name, EncodedResource resource) {
        YamlPropertiesFactoryBean factory = new YamlPropertiesFactoryBean();
        factory.setResources(resource.getResource());
        Properties properties = factory.getObject();
        String sourceName = (name != null) ? name : resource.getResource().getFilename();
        return new PropertiesPropertySource(sourceName, properties);
    }
}

Though considering that YAML format is getting more traction(start.spring.io started supporting YAML format last year), can an out of box support be considered for supporting YAML files?

[arnabnandy7]

I want to contribute on implementing on this if accepted for triage. Do let me know.