告别各种奇怪的时间格式

直接自定义配置

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
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.LocalDateTime;
import java.time.OffsetDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeParseException;

/**
 * 自定义时间格式，告别各种奇怪的时间格式
 */
@Configuration
public class DateTimeConfig {

    private static final DateTimeFormatter[] DESERIALIZE_FORMATTERS = {
            DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"),
            DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"),     // 缺秒
            DateTimeFormatter.ofPattern("yyyy-MM-dd"),           // 只有日期
            DateTimeFormatter.ofPattern("yyyy-M-d HH:mm:ss"),
            DateTimeFormatter.ofPattern("yyyy-M-d H:mm:s"),
            DateTimeFormatter.ISO_LOCAL_DATE_TIME               // 支持 2025-11-05T01:03:12
    };

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jacksonCustomizer() {
        return builder -> {
            builder.deserializerByType(LocalDateTime.class, new LocalDateTimeDeserializer() {
                @Override
                public LocalDateTime deserialize(JsonParser p, DeserializationContext ctxt)
                        throws IOException {
                    String text = p.getText().trim();
                    if (text.isEmpty()) {
                        return null;
                    }

                    // 依次尝试多种格式
                    for (DateTimeFormatter f : DESERIALIZE_FORMATTERS) {
                        try {
                            return LocalDateTime.parse(text, f);
                        } catch (DateTimeParseException ignored) {}
                    }

                    // 最后尝试 ISO 带时区的
                    try {
                        return OffsetDateTime.parse(text).toLocalDateTime();
                    } catch (Exception ignored) {}

                    throw new DateTimeParseException("无法解析时间: " + text, text, 0);
                }
            });

            // 序列化统一用这个格式返回给前端
            builder.serializerByType(LocalDateTime.class,
                    new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
        };
    }
}

如此一来，不用在实体属性上加注解@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")也是OK的