springboot3.0已经出来几个月了，最低支持jdk17，做个项目练下手
发现LocalDateTime序列化后返回的是一个数组。
就想着配置一个全局的序列化的配置，默认时间和日期的格式

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XHan Admin 官网
前端代码库
前端代码库

springboot 版本 3.x

package com.sunxh.bms.auth.client.web;

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.fasterxml.jackson.module.paramnames.ParameterNamesModule;
import jakarta.annotation.Resource;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.text.SimpleDateFormat;
import java.time.format.DateTimeFormatter;
import java.util.List;

/**
 * spring mvc配置类
 * sunxh 2023/2/26
 */
@Configuration
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {

    @Resource
    private MyWebInterceptor myWebInterceptor;
    @Resource
    private LoggerInterceptor loggerInterceptor;

    /**
     * 资源跨域设置
     */
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/api/**")
                .allowedOrigins("*")
                .maxAge(3600);
    }

    /**
     * 请求拦截器
     */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        WebMvcConfigurer.super.addInterceptors(registry);
        loggerInterceptor.addInterceptor(registry);
        myWebInterceptor.addInterceptor(registry);
    }

    /**
     * 定义全局默认时间序列化
     */
    private static final String DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
    private static final String DATE_FORMAT = "yyyy-MM-dd";
    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder()
                .indentOutput(true)
                .dateFormat(new SimpleDateFormat("yyyy-MM-dd"))
                .simpleDateFormat(DATE_TIME_FORMAT)
                .serializers(new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DATE_TIME_FORMAT)))
                .serializers(new LocalDateSerializer(DateTimeFormatter.ofPattern(DATE_FORMAT)))
                .deserializers(new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DATE_TIME_FORMAT)))
                .deserializers(new LocalDateDeserializer(DateTimeFormatter.ofPattern(DATE_FORMAT)))
                .modulesToInstall(new ParameterNamesModule());
        converters.add(new MappingJackson2HttpMessageConverter(builder.build()));
    }
}