springboot返回时间戳问题

目录

• springboot返回时间戳
• 1.springboot加上如下配置类
• 2.如果只有date
• 3.数据库中如何保存时间戳的毫秒值？
• 总结

springboot返回时间戳

1.springboot加上如下配置类

package com.kaka.mysql.config;

import com.fasterXML.jackson.core.jsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

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

/**
 * @author kaka
 */
@Configuration
public class LocalDateTimeSerializerConfig {
  android  /**
     * 序列化LocalDateTime
     * @return
     */
    @Bean
    @Primary
    public ObjectMapper serializingObjectMapper() {
        ObjectMapper objectMapper = new ObjectMapper();
        JavaTimeModule javaTimeModule =android new JavaTimeModule();
        javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer());
        javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDesejsrializer());
        objectMapper.registerModule(javaTimeModule);
编程客栈        return objectMapper;
    }

    /**
     * 序列化实现
     */
    public static class LocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {
        @Override
        public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers)
                throws IOExcepti编程客栈on {
            if (value != null){
                long timestamp = value.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();
                gen.writeNumber(timestamp);
            }
        }
    }

    /**
     * 反序列化实现
     */
    public static class LocalDateTimeDeserializer extends JsonDeserializer<LocalDateTime> {
        @Override
        public LocalDateTime deserialize(JsonParser p, DeserializationContext deserializationContext)
                throws IOException {
            long timestamp = p.getValueAsLong();
            if (timestamp > 0){
                return LocalDateTime.ofInstant(Instant.ofEpochMilli(timestamp),ZoneId.systemDefault());
            }else{
                return null;
            }
        }
    }
}

2.如果只有date

则可以在配置文件中配置

spring:
  jackson:
    serialization:
      write-dates-as-timestamps: true

3.数据库中如何保存时间戳的毫秒值？

在建数据库字段时，将其精度设置为3即可

总结

以上为个人经验，希望能给大家一个参考，也希望大家多多支持编程客栈(www.devze.com)。