IntelliJ Spring Boot use application.yml custom property array problem

My problem is solved. 

application.yml

my:
  email: test1@home.com
  servers:
    - name: Linux1
      ip: 192.168.12.3

    - name: Linux2
      ip: 192.168.12.4

@Component
@ConfigurationProperties(prefix = "my")
public class My {

    private String email;
    private List<Server> servers;

    public List<Server> getServers() {
        return servers;
    }

    public void setServers(List<Server> servers) {
        this.servers = servers;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public My() {
    }

    public static class Server
    {
        private String name;
        private String ip;

        public String getName() {
            return name;
        }

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

        public String getIp() {
            return ip;
        }

        public void setIp(String ip) {
            this.ip = ip;
        }

        @Override
        public String toString() {
            return "Server{" +
                    "name='" + name + '\'' +
                    ", ip='" + ip + '\'' +
                    '}';
        }
    }
}

@Autowired
private My my;

application.yml custom properties(array) with spring boot
https://blog.xuite.net/akira32/home/585962873