package cn.iocoder.yudao.framework.common.util.json.databind;
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import tools.jackson.core.JacksonException;
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import tools.jackson.core.JsonParser;
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import tools.jackson.core.JsonToken;
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import tools.jackson.databind.DeserializationContext;
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import tools.jackson.databind.ValueDeserializer;
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import java.time.Instant;
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import java.time.LocalDate;
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import java.time.ZoneId;
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import java.time.format.DateTimeFormatter;
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/**
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* 基于时间戳的 LocalDate 反序列化器
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* 兼容：数字时间戳、字符串时间戳、日期字符串
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*
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* @author 老五
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*/
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public class TimestampLocalDateDeserializer extends ValueDeserializer<LocalDate> {
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public static final TimestampLocalDateDeserializer INSTANCE = new TimestampLocalDateDeserializer();
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private static final DateTimeFormatter DEFAULT_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd");
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@Override
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public LocalDate deserialize(JsonParser p, DeserializationContext ctxt) throws JacksonException {
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if (p.currentToken() == JsonToken.VALUE_NUMBER_INT) {
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return LocalDate.ofInstant(Instant.ofEpochMilli(p.getValueAsLong()), ZoneId.systemDefault());
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}
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String text = p.getValueAsString();
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try {
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long millis = Long.parseLong(text);
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return LocalDate.ofInstant(Instant.ofEpochMilli(millis), ZoneId.systemDefault());
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} catch (NumberFormatException e) {
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// 不是纯数字，按日期格式解析
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}
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return LocalDate.parse(text, DEFAULT_FORMATTER);
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}
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}
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