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<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}

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

fastjson SerializerFeature详解

http://blog.csdn.net/u010246789/article/details/52539576