们在使用jackson时可能会用到这样一个注解
@JsonAutoDetect

  • 示例代码
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
@JsonAutoDetect(getterVisibility = JsonAutoDetect.Visibility.NONE,
        isGetterVisibility = JsonAutoDetect.Visibility.PUBLIC_ONLY,
        setterVisibility = JsonAutoDetect.Visibility.PUBLIC_ONLY,
        creatorVisibility = JsonAutoDetect.Visibility.NON_PRIVATE,
        fieldVisibility = JsonAutoDetect.Visibility.PUBLIC_ONLY)
private static class Student implements Serializable {
    private static final long serialVersionUID = -3289647584974663707L;
    public String name;
    private Integer age;
    private String job;
    private GenderEnum gender;
    private Date birthday;
    private String json;
}

这里我们name为public

我们指定了getterVisibility为JsonAutoDetect.Visibility.NONE

然后指定了fieldVisibility为JsonAutoDetect.Visibility.PUBLIC_ONLY

  • 序列化一下
Instant from = LocalDateTime.parse("2021-01-09 00:00:00", DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss", Locale.ENGLISH)).toInstant(ZoneOffset.MAX);
Student supa = Student.builder().name("supa").age(20).gender(GenderEnum.MALE).birthday(Date.from(from)).build();
System.out.println(new ObjectMapper().writeValueAsString(supa));
  • 结果就只有一个name了

{"name":"supa"}

这里见名思意creatorVisibility就是构造器可见度setterVisibility就是setter可见度等

一般用于控制属性序列化可见度