之前的項(xiàng)目好好的，突然報(bào)Java 8 date/time type java.time.LocalDateTime not supported by default: add Module “com.fasterxml.jackson.datatype:jackson-datatype-jsr310” to enable handling錯(cuò)誤，
原因是之前基本上沒(méi)有涉及LocalDateTime相關(guān)的代碼所有問(wèn)題一直沒(méi)有發(fā)現(xiàn)，我們使用springboot的默認(rèn)的jackson序列化，也沒(méi)有封裝自己的序列化bean，發(fā)現(xiàn)還是由于序列化組件的原因，現(xiàn)記錄一下解決方式，
以下方式只我試驗(yàn)我們的項(xiàng)目中可用，如有誤請(qǐng)指定，可能下面的方式也不適合于所有的情況。

解決方法：直接在增加一個(gè)Bean即可：Jackson2ObjectMapperBuilderCustomizer

主要還是需要增加那個(gè)LocalDate相關(guān)的序列器解析

一、在Configuration中增加Bean如下：

package cn.gzsendi.config;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.Map;

import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;

/**
 * Jackson2ObjectMapperBuilderCustomizer
 * Java8序列化時(shí)間處理器配置
 * @author liujh
 */
@Configuration
public class LocalDateTimeSerializerConfig {
	
	private static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
    private static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd");
    private static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern("HH:mm:ss");
    
    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        Map<Class<?>, JsonSerializer<?>> serializers = new HashMap<>();
        serializers.put(LocalDateTime.class, new LocalDateTimeSerializer(DATE_TIME_FORMATTER));
        serializers.put(LocalDate.class, new LocalDateSerializer(DATE_FORMATTER));
        serializers.put(LocalTime.class, new LocalTimeSerializer(TIME_FORMATTER));
        Map<Class<?>, JsonDeserializer<?>> deserializers = new HashMap<>();
        deserializers.put(LocalDateTime.class, new LocalDateTimeDeserializer(DATE_TIME_FORMATTER));
        deserializers.put(LocalDate.class, new LocalDateDeserializer(DATE_FORMATTER));
        deserializers.put(LocalTime.class, new LocalTimeDeserializer(TIME_FORMATTER));
        return builder -> builder.serializersByType(serializers).deserializersByType(deserializers);
    }

}

增加完bean后，重啟springboot測(cè)試效果即可文章來(lái)源地址http://www.zghlxwxcb.cn/news/detail-811081.html

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