java.time Json序列化

参考:

https://www.cnblogs.com/carrychan/p/9883172.html

目录

• LocalDateTime Json序列化
  • • controller
    • 方法一
    • 方法二

controller

@RestController
public class TestLocalDateTimeJsonController {
    @GetMapping("/get")
    public LocalDateTimeJson get(){
        return new LocalDateTimeJson(LocalDateTime.now());
    }
}

方法一

@Data
public class LocalDateTimeJson {
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "GMT+8")
    private LocalDateTime dateTime;

    public LocalDateTimeJson(LocalDateTime dateTime) {
        this.dateTime = dateTime;
    }
}

方法二

推荐使用

配置类

package com.chz.servicebase.config;

import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

/**
 * 对LocalDateTime生效, Date 通过yml配置文件配置
 * 不会影响数据库中的datetime转换类型(mybatis自动转换),只会对数据转换为Json类型产生影响
 */
@Configuration
public class JacksonConfig {
    @Value("${spring.jackson.date-format}")
    private String pattern;
    @Value("${spring.jackson.time-zone}")
    private String timeZone;

    //    @Bean
    public LocalDateTimeSerializer serializer() {
        return new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(pattern));
    }

    public LocalDateTimeDeserializer deserializer() {
        return new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(pattern));
    }

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer builderCustomizer() {
        return mapperBuilder -> {
            //同理LocalDate, LocalTime
            //添加序列化LocalDateTime
            mapperBuilder.serializerByType(LocalDateTime.class, serializer());
            //添加反序列化LocalDateTime
            mapperBuilder.deserializerByType(LocalDateTime.class, deserializer());
            mapperBuilder.timeZone(timeZone);
        };
    }
}

yaml

spring:
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8