spring boot过滤null值

1.全局，若是以下格式，注意jackson的缩进！

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: 123456
    url: jdbc:mysql://192.168.1.121/shopping?characterEncoding=utf-8&useSSL=false
    jpa:
      show-sql: true
  jackson:
    default-property-inclusion: non_null

2.局部，在需要的类前面添加以下标红的注解

@JsonInclude(JsonInclude.Include.NON_NULL)
public class OrderTransport {
    private String name;
    private Integer age;
}