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springboot項(xiàng)目中統(tǒng)一時(shí)間格式處理方法

更新時(shí)間：2024年10月29日 09:44:36 作者：飛翔的小->子>彈->

JacksonConfiguration主要用于配置JSON的序列化和反序列化,而LocalDateTimeFormatter則用于處理請(qǐng)求和響應(yīng)中的LocalDateTime格式,這兩個(gè)配置項(xiàng)在SpringBoot項(xiàng)目中至關(guān)重要,確保數(shù)據(jù)格式的正確處理和傳輸

JacksonConfiguration：

主要用于配置 Jackson 的序列化和反序列化，影響 JSON 請(qǐng)求和響應(yīng)的內(nèi)容。適用于處理 JSON 數(shù)據(jù)的序列化和反序列化

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.deser.std.StringDeserializer;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
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.io.IOException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
@Configuration
public class JacksonConfiguration {
    @Value("${spring.jackson.date-format}")
    private String dateTimeFormat;
    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        return builder -> {
            builder.deserializerByType(Long.TYPE, StringDeserializer.instance);
            builder.serializerByType(Long.class, ToStringSerializer.instance);
            builder.serializerByType(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(dateTimeFormat)));
            builder.deserializerByType(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(dateTimeFormat)));
            SimpleModule module = new SimpleModule();
            module.addKeySerializer(LocalDateTime.class, new JsonSerializer<>() {
                final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern(dateTimeFormat);
                @Override
                public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
                    gen.writeFieldName(FORMATTER.format(value));
                }
            });
            builder.modules(module);
        };
    }
}

LocalDateTimeFormatter：

主要用于處理 Spring MVC 中的請(qǐng)求參數(shù)和響應(yīng)體中的 LocalDateTime。它直接影響 Controller 方法中參數(shù)的解析和返回值的格式化。

import org.springframework.context.annotation.Configuration;
import org.springframework.format.Formatter;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Locale;
@SuppressWarnings("NullableProblems")
@Configuration
public class LocalDateTimeFormatter implements Formatter<LocalDateTime> {
    public static final String DATA_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss.SSS";
    public static final String DATA_TIME_FORMAT_T = "yyyy-MM-dd'T'HH:mm:ss.SSS";
    @Override
    public LocalDateTime parse(String text, Locale locale) {
        return LocalDateTime.parse(text, DateTimeFormatter.ofPattern(DATA_TIME_FORMAT));
    }
    @Override
    public String print(LocalDateTime object, Locale locale) {
        return DateTimeFormatter.ofPattern(DATA_TIME_FORMAT).format(object);
    }
}

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