springboot2.4.5使用fastjosn

package com.xxxxxxxx.config;
 
import com.alibaba.fastjson.serializer.SerializeConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.serializer.ToStringSerializer;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
 
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
 
@Configuration
public class FastjsonCovert {
    @Bean
    public HttpMessageConverters fastJsonHttpMessageCoverters() {
        FastJsonHttpMessageConverter fastCoverter = new FastJsonHttpMessageConverter();
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        //修改配置返回内容的过滤
        fastJsonConfig.setSerializerFeatures(
                // 格式化
                SerializerFeature.PrettyFormat,
                // 可解决long精度丢失 但会有带来相应的中文问题
                //SerializerFeature.BrowserCompatible,
                // 消除对同一对象循环引用的问题，默认为false（如果不配置有可能会进入死循环）
                SerializerFeature.DisableCircularReferenceDetect,
                // 是否输出值为null的字段,默认为false
                SerializerFeature.WriteMapNullValue,
                // 字符类型字段如果为null,输出为"",而非null
                SerializerFeature.WriteNullStringAsEmpty,
                // List字段如果为null,输出为[],而非null
                SerializerFeature.WriteNullListAsEmpty
        );
        fastJsonConfig.setDateFormat("yyyy-MM-dd HH:mm:ss");
        // long精度问题
        SerializeConfig serializeConfig = SerializeConfig.globalInstance;
        serializeConfig.put(Long.class, ToStringSerializer.instance);
        serializeConfig.put(Long.TYPE, ToStringSerializer.instance);
        // serializeConfig.put(LocalDateTime.class, LocalDateTimeSerializer.);
 
        //处理中文乱码问题
        List<MediaType> mediaTypeList = new ArrayList<MediaType>();
        mediaTypeList.add(MediaType.APPLICATION_JSON_UTF8);
        mediaTypeList.add(new MediaType(MediaType.TEXT_HTML, Charset.forName("UTF-8")));
        mediaTypeList.add(new MediaType(MediaType.TEXT_PLAIN, Charset.forName("UTF-8")));
        mediaTypeList.add(new MediaType(MediaType.APPLICATION_FORM_URLENCODED, Charset.forName("UTF-8")));
        mediaTypeList.add(MediaType.MULTIPART_FORM_DATA);
        fastCoverter.setSupportedMediaTypes(mediaTypeList);
        //3、在convert中添加配置信息
        fastCoverter.setFastJsonConfig(fastJsonConfig);
        return new HttpMessageConverters(fastCoverter);
    }
}