fun.bigtable.kraken.config.LocalDateTimeSerializerConfig Maven / Gradle / Ivy

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package fun.bigtable.kraken.config;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import fun.bigtable.kraken.util.DateTimeUtils;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.io.IOException;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;

@Configuration
public class LocalDateTimeSerializerConfig {

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        return builder -> {
            builder.serializerByType(LocalDateTime.class, new LocalDateTimeSerializer());
            builder.deserializerByType(LocalDateTime.class, new LocalDateTimeDeserializer());
        };
    }

    /**
     * 序列化
     */
    public static class LocalDateTimeSerializer extends JsonSerializer {
        @Override
        public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers)
                throws IOException {
            if (value != null) {
                gen.writeString(DateTimeUtils.formateDate(value));
            }
        }
    }

    /**
     * 反序列化
     */
    public static class LocalDateTimeDeserializer extends JsonDeserializer {
        @Override
        public LocalDateTime deserialize(JsonParser p, DeserializationContext deserializationContext)
                throws IOException {
            long timestamp = p.getValueAsLong();
            if (timestamp > 0) {
                return LocalDateTime.ofInstant(Instant.ofEpochSecond(timestamp), ZoneId.systemDefault());
            } else {
                try {
                    String timeString = p.getValueAsString();
                    return LocalDateTime.parse(timeString, DateTimeFormatter.ofPattern(DateTimeUtils.DEFAULT_DATE_TIME_PATTERN));
                } catch (Exception e) {
                    return null;
                }

            }
        }
    }
}