SpringBoot解析怎么指定Yaml配置文件

my:
  contents:
    - id: 12121
      name: nadasd
    - id: 3333
      name: vfffff

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;

@Component
@PropertySource(value = "classpath:my.yaml", factory = YamlPropertiesSourceFactory.class)
@ConfigurationProperties(prefix = "my")
public class MyProperties {

    private List<content> contents = new ArrayList<>();

    public List<content> getContents() {
        return contents;
    }

    public void setContents(List<content> contents) {
        this.contents = contents;
    }


}

class content {
    private String id;

    private String name;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

import org.springframework.boot.env.YamlPropertySourceLoader;
import org.springframework.core.env.PropertySource;
import org.springframework.core.io.support.EncodedResource;
import org.springframework.core.io.support.PropertySourceFactory;

import java.io.IOException;
import java.util.List;
import java.util.Optional;

public class YamlPropertiesSourceFactory implements PropertySourceFactory {

    @Override
    public PropertySource<?> createPropertySource(String name, EncodedResource resource) throws IOException {
        String resourceName = Optional.ofNullable(name).orElse(resource.getResource().getFilename());
        List<PropertySource<?>> yamlSources = new YamlPropertySourceLoader().load(resourceName, resource.getResource());
        return yamlSources.get(0);
    }

}