背叛就是脱离自己的位置，背叛，就是摆脱原位，投向未知。——米兰·昆德拉
我们在使用jackson时可能会用到这样一个注解
例如我们这里一个Student类
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| @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;
}
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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
我们序列化一下
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| 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));
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结果就只有一个name了
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