SpringBoot JackSon全局配置

package com.nxe.business.bailian.bi.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
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 com.nex.bu1.json.JacksonEx;
import com.nex.bu1.util.DateEx;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;

/**
 * jackson 全局配置
 * @author Yungui.Zheng
 * @date 2020-11-05
 */
@Configuration
public class CustomNullValueSerializerConfig {

    @Bean
    public ObjectMapper objectMapper() {
        final ObjectMapper mapper = new ObjectMapper();

        mapper.enable(MapperFeature.USE_STD_BEAN_NAMING);
        mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        mapper.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY);

        // Date
        mapper.setDateFormat(new SimpleDateFormat(DateEx.FMT_YMD_HMS));
        // LocalDate
        JavaTimeModule javaTimeModule = new JavaTimeModule();
        javaTimeModule.addSerializer(
                LocalDate.class, new LocalDateSerializer(DateEx.formatter(DateEx.FMT_YMD)));
        javaTimeModule.addDeserializer(
                LocalDate.class, new LocalDateDeserializer(DateEx.formatter(DateEx.FMT_YMD)));
        // LocalDateTime
        javaTimeModule.addSerializer(
                LocalDateTime.class, new LocalDateTimeSerializer(DateEx.formatter()));
        javaTimeModule.addDeserializer(
                LocalDateTime.class, new LocalDateTimeDeserializer(DateEx.formatter()));

        mapper.registerModule(javaTimeModule);
        mapper.registerModule(new Jdk8Module());
        return mapper;
    }

}

　　Jackson在spring框架中用来实现Json和对象的相互转化，通过自定义配置实现对应转化需求