dto返回null的处理（必须或非必须字段控制）

@Data
@JsonInclude(JsonInclude.Include.NON_NULL)
public class OrderDTO {
    //todo
}

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: 
    url: jdbc:mysql://localhost:3306/sell?serverTimezOne=GMT%2B8&characterEncoding=utf-8&userSSL=false
  jpa:
    show-sql: true
  jackson:
    default-property-inclusion: non_null

public class OrderDTO {

    private String orderId;
    private String buyerName;
    private String buyerPhOne= "";
}