fastjson序列化增加额外字段

package com.json;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.AfterFilter;
import com.alibaba.fastjson.serializer.SerializeConfig;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.jaxrs.FastJsonProvider;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import lombok.Data;

/**
 * @author liangsu
 * @version v1.0
 * @Description
 *
 *    对象序列号为json字符串的时候，在有#{@link }注解时，
 *    多输出一个字段。如：sex = 1 输出 {"sex": 1, "_sex": "男"}
 *
 * @Date 2020/03/20 09:00
 * @since
 */
public class AddFieldJsonFilter extends AfterFilter {

    @Override
    public void writeAfter(Object object) {

        writeKeyValue("add", "小明");
    }

    public static void main(String[] args) {
        AddFieldJsonFilter addFieldJsonFilter = new AddFieldJsonFilter();
        Model model = new Model("zhangsan", System.currentTimeMillis());
        System.out.println(JSON.toJSONString(model, SerializeConfig.globalInstance, addFieldJsonFilter));
    }
}

@Data
class Model{
    private String name;
    private Long bithUtc;

    public Model(String name, Long bithUtc) {
        this.name = name;
        this.bithUtc = bithUtc;
    }

    public Model() {
    }

    public String getAge(){
        return "asdfk";
    }
}

结果

{"age":"asdfk","bithUtc":1645076017817,"name":"zhangsan","add":"小明"}