SpringBoot几种常用的接口日期格式化方法

# 格式化全局时间字段
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss
# 指定时间区域类型
spring.jackson.time-zone=GMT+8

import com.fasterxml.jackson.annotation.JsonFormat;
import lombok.Data;
import java.util.Date;
 
@Data
public class UserInfo {
    private int id;
    private String username;
    // 对 createtime 字段进行格式化处理
    @JsonFormat(pattern = "yyyy-MM-dd hh:mm:ss", timezone = "GMT+8")
    private Date createtime;
    private Date updatetime;
}

@Configuration
public class DateConverterConfig {
    @Bean
    public Converter<String, LocalDate> localDateConverter() {
        return new Converter<String, LocalDate>() {
            @Override
            public LocalDate convert(String source) {
                return LocalDate.parse(source, DateTimeFormatter.ofPattern("yyyy-MM-dd"));
            }
        };
    }
    @Bean
    public Converter<String, LocalDateTime> localDateTimeConverter() {
        return new Converter<String, LocalDateTime>() {
            @Override
            public LocalDateTime convert(String source) {
                return LocalDateTime.parse(source, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
            }
        };
    }
}

@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
private Date birthday;

@ControllerAdvice
public class InitBinderDateController {
    /**
     * 将前台传递过来的日期格式的字符串，自动转化为时间类型
     * [拦截不到@RequestBody注解修饰的参数]
     */
    @InitBinder("date")
    public void initBinder(WebDataBinder binder) {
        // Date 类型转换
        //        DateFormat dateFormat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        //        binder.registerCustomEditor(Date.class,new CustomDateEditor(dateFormat, true));
        //       System.out.println("test");
        // LocalDateTime 类型转换
        binder.registerCustomEditor(LocalDateTime.class, new PropertyEditorSupport() {
            @Override
            public void setAsText(String text) {
                if (!StringUtils.isEmpty(text)) {
                    setValue(LocalDateTime.parse(text, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
                }
            }
        });
    }
}

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

@Configuration
public class LocalDateTimeSerializerConfig {
    private static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
    @Bean
    public LocalDateTimeSerializer localDateTimeSerializer() {
        return new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(YYYY_MM_DD_HH_MM_SS));
    }
    @Bean
    public LocalDateTimeDeserializer localDateTimeDeserializer() {
        return new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(YYYY_MM_DD_HH_MM_SS));
    }
    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        return builder -> {
            builder.serializerByType(LocalDateTime.class, localDateTimeSerializer());
            builder.deserializerByType(LocalDateTime.class, localDateTimeDeserializer());
        };
    }
}

public class MyEntity {
    private Date date;
    // getter and setter
}

@RestController
public class MyController {
    @GetMapping("/entity")
    public MyEntity getEntity() {
        MyEntity entity = new MyEntity();
        entity.setDate(new Date());
        return entity;
    }
}

{
    "date": 1678912345678
}