fastjson 解决空数组,对象问题、中文乱码、long类型失真

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.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;

import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author n.ao
 * @date 2022/4/15
 */
@Configuration
public class AppConfiguration {

    /**
     * 使用fastjson 作为json序列化工具
     *
     * @return FastJsonHttpMessageConverter
     */
    @Bean
    public FastJsonHttpMessageConverter fastJsonHttpMessageConverter() {
        FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(
                // 防止循环引用
                SerializerFeature.DisableCircularReferenceDetect,
                // 空集合返回[],不返回null
                SerializerFeature.WriteNullListAsEmpty,
                // 空字符串返回"",不返回null
                SerializerFeature.WriteNullStringAsEmpty,
                SerializerFeature.WriteMapNullValue,
                SerializerFeature.WriteDateUseDateFormat
        );
        //处理中文乱码问题
        List<MediaType> fastMediaTypes = new ArrayList<>();
        fastMediaTypes.add(MediaType.APPLICATION_JSON);
        fastJsonHttpMessageConverter.setSupportedMediaTypes(fastMediaTypes);

        // 解决long类型失真问题
        SerializeConfig serializeConfig = SerializeConfig.globalInstance;
        serializeConfig.put(BigInteger.class, ToStringSerializer.instance);
        serializeConfig.put(Long.class, ToStringSerializer.instance);
        serializeConfig.put(Long.TYPE, ToStringSerializer.instance);
        fastJsonConfig.setSerializeConfig(serializeConfig);

        fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);

        return fastJsonHttpMessageConverter;
    }

}