FastJSON个性化序列化
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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...
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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);
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[
{
"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
}
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再给个例子：
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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 +
'}'
;
}
}
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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
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https://www.w3cschool.cn/fastjson/fastjson-api.html
fastjson SerializerFeature详解
http://blog.csdn.net/u010246789/article/details/52539576
本文转自 leizhimin 51CTO博客，原文链接：http://blog.51cto.com/lavasoft/2046732，如需转载请自行联系原作者
