使用 "ObjectMapper" 格式化 JSON 数据

Question

我有一个字段：

@NotNull
    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
    private LocalDate date;

但是当我获取 JSON 格式的数据时 - 它是另一个：

"date":{"year":2020,"month":"JANUARY","monthValue":1,"dayOfMonth":6,"dayOfWeek":"MONDAY","dayOfYear":6,"era":"CE","chronology":{"calendarType":"iso8601","id":"ISO"},"leapYear":true}

如何解决？

Answer 1

您可以为它编写自定义 serializer/deserializer。

@JsonDeserialize(using = LocalDateDeserializer.class)
@JsonSerialize(using = LocalDateSerializer.class)
private LocalDate date;

本文更详细地介绍了如何创建这些类 - https://kodejava.org/how-to-format-localdate-object-using-jackson/

使用 "ObjectMapper" 格式化 JSON 数据

Formatting JSON data with "ObjectMapper"

java

spring

datetime

json

localdate