基于spring webflux框架，而非springmvc

@Configuration
public class LongToStringConfig {@Beanpublic ObjectMapper objectMapper() {ObjectMapper objectMapper = new ObjectMapper();SimpleModule simpleModule = new SimpleModule();simpleModule.addSerializer(Long.class, ToStringSerializer.instance).addSerializer(Long.TYPE, ToStringSerializer.instance);objectMapper.registerModule(simpleModule);return objectMapper;}
}

package com.diligent.cloud.open.api.gateway.config;import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.reactivestreams.Publisher;
import org.springframework.beans