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<JstJobGoodsSku> 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}

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

fastjson SerializerFeature详解