SpringBoot中Jackson日期格式化技巧分享

package com.diguage.demo.config;

import com.fasterxml.jackson.databind.ObjectMapper;

import com.fasterxml.jackson.databind.util.StdDateFormat;

import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;

import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;

import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;

import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;

import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.Primary;

import java.text.DateFormat;

import java.text.SimpleDateFormat;

import java.time.LocalDate;

import java.time.LocalDateTime;

import static com.fasterxml.jackson.databind.SerializationFeature.*;

import static java.time.format.DateTimeFormatter.ofPattern;

/<strong>

  * 配置类

  *

  * @author D瓜哥 · <a href= "https://www.diguage.com/" rel= "external nofollow"   rel= "external nofollow"   target= "_blank" >https://www.diguage.com</a>

  */

@Configuration

public class Config {

     /</strong>

      * 创建 ObjectMapper 对象，配置日期格式化

      *

      * @author D瓜哥 · <a href= "https://www.diguage.com/" rel= "external nofollow"   rel= "external nofollow"   target= "_blank" >https://www.diguage.com</a>

      */

     @Bean

     @Primary

     public ObjectMapper objectMapper() {

         ObjectMapper mapper = new ObjectMapper();

         String dateTimepattern = "yyyy-MM-dd HH:mm:ss" ;

         String datePattern = "yyyy-MM-dd" ;

         DateFormat dateFormat = new SimpleDateFormat(dateTimepattern);

         mapper.setDateFormat(dateFormat);

         mapper.configure(WRITE_DATES_AS_TIMESTAMPS, false );

         mapper.setDateFormat( new StdDateFormat().withColonInTimeZone( true ));

         JavaTimeModule javaTimeModule = new JavaTimeModule();

         javaTimeModule.addDeserializer(LocalDate. class ,

                 new LocalDateDeserializer(ofPattern(datePattern)));

         javaTimeModule.addSerializer(LocalDate. class ,

                 new LocalDateSerializer(ofPattern(datePattern)));

         javaTimeModule.addDeserializer(LocalDateTime. class ,

                 new LocalDateTimeDeserializer(ofPattern(dateTimepattern)));

         javaTimeModule.addSerializer(LocalDateTime. class ,

                 new LocalDateTimeSerializer(ofPattern(dateTimepattern)));

         mapper.registerModule(javaTimeModule);

         return mapper;

     }

}

spring:

     jackson:

         default-property-inclusion: ALWAYS

         time-zone: GMT+8

         date-format: yyyy-MM-dd HH:mm:ss

@Configuration

public class JacksonConfig {

     @Bean

     @Order (Ordered.HIGHEST_PRECEDENCE)

     public Jackson2ObjectMapperBuilderCustomizer customJackson() {

         return new Jackson2ObjectMapperBuilderCustomizer() {

             @Override

             public void customize(Jackson2ObjectMapperBuilder builder) {

                 builder.serializerByType(LocalDateTime. class ,

                         new LocalDateTimeSerializer(DateTimeFormatter.ofPattern( "yyyy-MM-dd HH:mm:ss" )));

                 builder.serializerByType(LocalDate. class ,

                         new LocalDateSerializer(DateTimeFormatter.ofPattern( "yyyy-MM-dd" )));

                 builder.serializerByType(LocalTime. class ,

                         new LocalTimeSerializer(DateTimeFormatter.ofPattern( "HH:mm:ss" )));

                 builder.deserializerByType(LocalDateTime. class ,

                         new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern( "yyyy-MM-dd HH:mm:ss" )));

                 builder.deserializerByType(LocalDate. class ,

                         new LocalDateDeserializer(DateTimeFormatter.ofPattern( "yyyy-MM-dd" )));

                 builder.deserializerByType(LocalTime. class ,

                         new LocalTimeDeserializer(DateTimeFormatter.ofPattern( "HH:mm:ss" )));

                 builder.serializationInclusion(JsonInclude.Include.NON_NULL);

                 builder.failOnUnknownProperties( false );

                 builder.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);

             }

         };

     }

}