附录 B.2.1. 内嵌属性

该注解处理器自动将内部类当做内嵌属性处理。例如，下面的类：

@ConfigurationProperties(prefix="server")
public class ServerProperties {
    private String name;
    private Host host;
    // ... getter and setters
    private static class Host {
        private String ip;
        private int port;
        // ... getter and setters
    }
}