feat(jackson): 添加 LocalDateTime 和 LocalDate 的 JSON 序列化支持

- 引入 LocalDateTimeSerializer 和 LocalDateTimeDeserializer 处理 LocalDateTime 类型
- 添加 LocalDateSerializer 和 LocalDateDeserializer 处理 LocalDate 类型
- 配置 Jackson 使用自定义的时间格式化器
- 扩展 ObjectMapper 配置以支持新的序列化器和反序列化器
- 实现时间类型的空值安全处理
- 统一时间格式为 "yyyy-MM-dd HH:mm:ss" 和 "yyyy-MM-dd"

zkh-web/src/main/java/vip/jcfd/web/config/JacksonConfig.java

@@ -11,7 +11,10 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 import java.io.IOException;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
 import java.time.ZoneId;
+import java.time.format.DateTimeFormatter;
 import java.util.Locale;
 import java.util.TimeZone;
 
@@ -28,11 +31,85 @@ public class JacksonConfig {
 			jacksonObjectMapperBuilder.locale(Locale.CHINA);
 			jacksonObjectMapperBuilder.timeZone(TimeZone.getTimeZone(ZoneId.of("Asia/Shanghai")));
 			jacksonObjectMapperBuilder.simpleDateFormat("yyyy-MM-dd HH:mm:ss");
-			jacksonObjectMapperBuilder.serializers(new LongSerializer());
-			jacksonObjectMapperBuilder.deserializers(new LongDeserializer());
+			jacksonObjectMapperBuilder.serializers(new LongSerializer(), new LocalDateTimeSerializer(), new LocalDateSerializer());
+			jacksonObjectMapperBuilder.deserializers(new LongDeserializer(), new LocalDateTimeDeserializer(), new LocalDateDeserializer());
 		};
 	}
 
+	public static class LocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {
+
+		private final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+
+		@Override
+		public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+			if (value == null) {
+				gen.writeNull();
+				return;
+			}
+			gen.writeString(value.format(formatter));
+		}
+
+		@Override
+		public Class<LocalDateTime> handledType() {
+			return LocalDateTime.class;
+		}
+	}
+
+	public static class LocalDateTimeDeserializer extends JsonDeserializer<LocalDateTime> {
+
+		private final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+
+		@Override
+		public LocalDateTime deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
+			if (p.getText() == null) {
+				return null;
+			}
+			return LocalDateTime.parse(p.getText(), formatter);
+		}
+
+		@Override
+		public Class<?> handledType() {
+			return LocalDateTime.class;
+		}
+	}
+
+	public static class LocalDateSerializer extends JsonSerializer<LocalDate> {
+
+		private final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
+
+		@Override
+		public void serialize(LocalDate value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+			if (value == null) {
+				gen.writeNull();
+				return;
+			}
+			gen.writeString(value.format(formatter));
+		}
+
+		@Override
+		public Class<LocalDate> handledType() {
+			return LocalDate.class;
+		}
+	}
+
+	public static class LocalDateDeserializer extends JsonDeserializer<LocalDate> {
+
+		private final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
+
+		@Override
+		public LocalDate deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
+			if (p.getText() == null) {
+				return null;
+			}
+			return LocalDate.parse(p.getText(), formatter);
+		}
+
+		@Override
+		public Class<?> handledType() {
+			return LocalDate.class;
+		}
+	}
+
 	public static class LongSerializer extends JsonSerializer<Long> {
 		@Override
 		public void serialize(Long value, JsonGenerator gen, SerializerProvider serializers) throws IOException {