The bean: AllowTime.java
@JsonSerialize(using = CustomLocalTimeSerializer.class)
@JsonDeserialize(using = TimeToLocalTimeDeserializer.class)
LocalTime rmt_start;
@JsonSerialize(using = LocalDateToMiguoSerializer.class)
@JsonDeserialize(using = TimestampToLocalDateDeserializer.class)
LocalDate start_date;
Serializer1 : LocalDateToMiguoSerializer
public class LocalDateToMiguoSerializer extends LocalDateSerializer {
private static final long serialVersionUID = 1L;
@Override
public void serialize(LocalDate value, JsonGenerator g, SerializerProvider provider) throws IOException {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyMMdd");
MinguoChronology minguo = MinguoChronology.INSTANCE;
String result = formatter.format(minguo.dateEpochDay(value.toEpochDay()));
g.writeString(result);
}
}
Serializer2 : CustomLocalTimeSerializer
public class CustomLocalTimeSerializer extends LocalTimeSerializer {
private static final long serialVersionUID = 1L;
@Override
public void serialize(LocalTime value, JsonGenerator g, SerializerProvider provider) throws IOException {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HHmm");
String result = formatter.format(value);
g.writeString(result);
}
}
Deserializer1 : TimeToLocalTimeDeserializer
public class TimeToLocalTimeDeserializer extends JsonDeserializer<LocalTime> {
@Override
public LocalTime deserialize(JsonParser jp, DeserializationContext dc) throws IOException, JsonProcessingException {
return jp.readValueAs(Time.class).toLocalTime();
}
}
由於都會用 Lombok 來簡化 setter/getter 就設定了:
@Setter(onMethod_={@JsonProperty(value="RMT_START")})
LocalTime rmt_start;
結果 ObjectManage 如果沒有 register 指定的 Deserializer, 則在 deserialize map 成 bean 時, 就會一直拋出：
no constructor long integer…
然後測了很久, 才知道是這個 @Setter 的問題。
另外也才知道, 其實可以不用在 bean 裡用 annotation 指定 serializer、deserializer,
也可以在 Object Manager 指定。
好像兩邊都有道理, 尤其如果 serializer 是在 Object Manager 要執行時才指定,
那就可以依據 view 的需求, serialize 成需要的格式。