SpringBoot获取配置文件内容的几种方式总结

file:
  windows: D:\file
  linux: /usr/local/file

@Data
@Component
@ConfigurationProperties(prefix = "file")
public class FileProperties {

    private String windows;
    private String linux;
}

@Bean
@ConfigurationProperties(prefix = "userinfo")
public FileProperties fileProperties() {
    return new FileProperties();
}

@Service
public class Test {     
	
    @Autowired
    private FileProperties fileProperties;
    
    @Override
    public void test() {
         System.out.println(fileProperties.getLinux());
    }
}

@Value("${file.windows}")
private String windows;

@Value("${file.linux}")
private String linux;

@SpringBootApplication
@PropertySource(value = {"classpath:custom.properties"})
public class DemoApplication{ }

import org.springframework.beans.factory.config.YamlPropertiesFactoryBean;
import org.springframework.core.env.PropertiesPropertySource;
import org.springframework.core.env.PropertySource;
import org.springframework.core.io.support.DefaultPropertySourceFactory;
import org.springframework.core.io.support.EncodedResource;

import java.io.IOException;
import java.util.Properties;

public class YmlConfigFactory extends DefaultPropertySourceFactory {
    @Override
    public PropertySource<?> createPropertySource(String name, EncodedResource resource) throws
            IOException {
        String sourceName = name != null ? name : resource.getResource().getFilename();
        if (!resource.getResource().exists()) {
            return new PropertiesPropertySource(sourceName, new Properties());
        } else if (sourceName.endsWith(".yml") || sourceName.endsWith(".yaml")) {
            Properties propertiesFromYaml = loadYml(resource);
            return new PropertiesPropertySource(sourceName, propertiesFromYaml);
        } else {
            return super.createPropertySource(name, resource);
        }
    }

    private Properties loadYml(EncodedResource resource) throws IOException {
        YamlPropertiesFactoryBean factory = new YamlPropertiesFactoryBean();
        factory.setResources(resource.getResource());
        factory.afterPropertiesSet();
        return factory.getObject();
    }
}

@SpringBootApplication
@PropertySource(value = {"classpath:custom.yml"}, factory = YmlConfigFactory.class)
public class DemoApplication { }