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FastJSON个性化序列化

发表于：2025-12-01 作者：千家信息网编辑

千家信息网最后更新 2025年12月01日，FastJSON个性化序列化public class JstJobGoods implements Serializable { @JSONField(serialize = false)

千家信息网最后更新 2025年12月01日FastJSON个性化序列化

FastJSON个性化序列化

public class JstJobGoods implements Serializable {    @JSONField(serialize = false)    private Long id;          //ID    @JSONField(name = "shop_id")    private String shopId;          //店铺编号    @JSONField(name = "i_id")    private Long iId;          //商品款号,商品ID    @JSONField(name = "shop_i_id")    private String shopIId;          //外部款号    @JSONField(name = "name")    private String name;          //名称    @JSONField(name = "sale_price")    private Long salePrice;          //销售价格    @JSONField(name = "enabled")    private Integer enabled;          //是否启用    @JSONField(name = "brand_name")    private String brandName;          //品牌名称    @JSONField(name = "market_price")    private Long marketPrice;          //市场价格    @JSONField(serialize = false)    private int realSkuQt = 0;          //真实SKU数量    @JSONField(serialize = false)    private String digit;          //数据MD5（不含id和uptime计算所得）    @JSONField(serialize = false)    private java.util.Date uptime;          //更新时间    @JSONField(name = "skus")    private List goodsSkuList;    @JSONField(serialize = false)    private Opt opt = Opt.DO_NOTHING;    private static Pattern pnv = Pattern.compile("(.+):(.+)");    public static SerializeFilter[] serializeFilters = new SerializeFilter[]{            new ValueFilter() {                @Override                public Object process(Object object, String name, Object value) {                    if (object instanceof JstJobGoods) {                        JstJobGoods goods = (JstJobGoods) object;                        if (name.equals("sale_price"))                            return numberFormat2((long) value / 100);                        if (name.equals("market_price"))                            return numberFormat2((long) value / 100);                    } else if (object instanceof JstJobGoodsSku) {                        JstJobGoodsSku sku = (JstJobGoodsSku) object;                        if (name.equals("sale_price"))                            return numberFormat2((long) value / 100);                        if (name.equals("market_price"))                            return numberFormat2((long) value / 100);                    }                    return value;                }            },            new BeforeFilter() {                @Override                public void writeBefore(Object object) {                    //尺码:22,颜色:黑色                    if (object instanceof JstJobGoods) {                        JstJobGoods goods = (JstJobGoods) object;                        goods.setDigit(goods.getDigit());                    } else if (object instanceof JstJobGoodsSku) {                        JstJobGoodsSku sku = (JstJobGoodsSku) object;                        sku.setDigit(sku.getDigit());                        String properties = sku.getProperties();                        if (properties == null || properties.trim().length() == 0) return;                        String[] nvs = properties.split(",");                        StringBuffer propertiesNames = new StringBuffer();                        StringBuffer propertiesValues = new StringBuffer();                        for (String nv : nvs) {                            Matcher m = pnv.matcher(nv);                            if (m.find()) {                                propertiesNames.append(m.group(1).trim()).append(',');                                propertiesValues.append(m.group(2).trim()).append(',');                            }                        }                        wipeEndSeparator(propertiesNames, ',');                        wipeEndSeparator(propertiesValues, ',');                        sku.setPropertiesName(propertiesNames.toString());                        sku.setPropertiesValue(propertiesValues.toString());                    }                }                private void wipeEndSeparator(StringBuffer sb, char separator) {                    if (sb.length() > 0 && sb.charAt(sb.length() - 1) == separator)                        sb.deleteCharAt(sb.length() - 1);                }            }    };            //getter and setter...

public static Double numberFormat2(double value) {    DecimalFormat df = new DecimalFormat("0.00");    df.setRoundingMode(RoundingMode.DOWN);    return Double.parseDouble(df.format(value));}String req = JSON.toJSONString(needSynGoodsList, JstJobGoods.serializeFilters, SerializerFeature.PrettyFormat, SerializerFeature.WriteMapNullValue);

[        {                "brand_name":"",                "enabled":1,                "i_id":1174,                "market_price":188.0,                "name":"皮豆豆6620真皮战斗短靴大棉",                "sale_price":158.0,                "shop_i_id":"1174_001",                "shop_id":"10039844",                "skus":[                        {                                "brand_name":"",                                "color":"",                                "enabled":1,                                "market_price":188.0,                                "name":"皮豆豆6620真皮战斗短靴大棉",                                "pic":"",                                "pic_big":"",                                "properties_name":"尺码,颜色",                                "properties_value":"21,红色",                                "sale_price":158.0,                                "shop_sku_id":"v_1572_001",                                "sku_id":"r_1572"                        },                        {                                "brand_name":"",                                "color":"",                                "enabled":1,                                "market_price":188.0,                                "name":"皮豆豆6620真皮战斗短靴大棉",                                "pic":"",                                "pic_big":"",                                "properties_name":"尺码,颜色",                                "properties_value":"21,黑色",                                "sale_price":158.0,                                "shop_sku_id":"v_1573_001",                                "sku_id":"r_1573"                        }                ]        }]{"code":0,"issuccess":true,"msg":null}

再给个例子：

import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.annotation.JSONField;import com.alibaba.fastjson.serializer.AfterFilter;import com.alibaba.fastjson.serializer.BeforeFilter;import com.alibaba.fastjson.serializer.SerializeFilter;import com.alibaba.fastjson.serializer.ValueFilter;import java.util.ArrayList;import java.util.List;public class FastJSONTest {    public static void main(String[] args) {        Foo f0 = new Foo("asan", 1100,24);        System.out.println("原始的Foo：\n"+f0);        String json1 = JSON.toJSONString(f0, new ValueFilter() {            @Override            public Object process(Object object, String name, Object value) {                switch (name){                    case "_val": return (Integer) value / 10;                    case "age": return (Integer) value +1;                    default: return value;                }            }        });        System.out.println("第1次序列化后的Foo：\n"+f0);        System.out.println(">>>JSON1"+json1);        List  list = new ArrayList();        list.add(f0);        String json2 = JSON.toJSONString(f0,new SerializeFilter[]{                new BeforeFilter() {                    @Override                    public void writeBefore(Object object) {                        if(!(object instanceof Foo))return;                        Foo f = (Foo)object;                        f.setName(f.getName()+"++");                        f.setAge(f.getAge()+100);                    }                },                new AfterFilter() {                    @Override                    public void writeAfter(Object object) {//                        if(!(object instanceof Foo))return;//                        Foo f = (Foo)object;//                        f.setName(f.getName().substring(0,f.getName().length()-2));//                        f.setAge(f.getAge()-100);                    }                }        });        System.out.println("第2次序列化后的Foo：\n"+f0);        System.out.println(">>>JSON2"+json2);    }}class Foo {    private String name;    @JSONField(name = "_val",serialize = true)    private int val;    private int age;    public Foo(String name, int val, int age) {        this.name = name;        this.val = val;        this.age = age;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getVal() {        return val;    }    public void setVal(int val) {        this.val = val;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    @Override    public String toString() {        return "Foo{" +                "name='" + name + '\'' +                ", val=" + val +                ", age=" + age +                '}';    }}

原始的Foo：Foo{name='asan', val=1100, age=24}第1次序列化后的Foo：Foo{name='asan', val=1100, age=24}>>>JSON1{"_val":110,"age":25,"name":"asan"}第2次序列化后的Foo：Foo{name='asan++', val=1100, age=124}>>>JSON2{"_val":1100,"age":124,"name":"asan++"}Process finished with exit code 0

https://www.w3cschool.cn/fastjson/fastjson-api.html