对日期的序列化:
一种方法是通过注解
Java代码
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@JSONField
(format=
"yyyy-MM-dd HH:mm:ss"
)
public
Date birthday;
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另一种是通过SerializeConfig:
Java代码
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private
static
SerializeConfig mapping =
new
SerializeConfig();
private
static
String dateFormat;
static
{
dateFormat =
"yyyy-MM-dd HH:mm:ss"
;
mapping.put(Date.
class
,
new
SimpleDateFormatSerializer(dateFormat));
}
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json字符串中使用单引号:
String text = JSON.toJSONString(object, SerializerFeature.UseSingleQuotes);
字段显示不同的key:
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public
class
User {
@JSONField
(name=
"ID"
)
public
int
getId() { ... }
}
User user = ...;
JSON.toJSONString(user);
// {"ID":001}
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自定义序列化代码示例:
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public
class
JsonUtil {
private
static
SerializeConfig mapping =
new
SerializeConfig();
private
static
String dateFormat;
static
{
dateFormat =
"yyyy-MM-dd HH:mm:ss"
;
}
/**
* 默认的处理时间
*
* @param jsonText
* @return
*/
public
static
String toJSON(Object jsonText) {
return
JSON.toJSONString(jsonText,
SerializerFeature.WriteDateUseDateFormat);
}
/**
* 自定义时间格式
*
* @param jsonText
* @return
*/
public
static
String toJSON(String dateFormat, String jsonText) {
mapping.put(Date.
class
,
new
SimpleDateFormatSerializer(dateFormat));
return
JSON.toJSONString(jsonText, mapping);
}
}
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自定义反序列化示例:
先自定义一个日期解析类:
Java代码
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public
class
MyDateFormatDeserializer
extends
DateFormatDeserializer {
private
String myFormat;
public
MyDateFormatDeserializer(String myFormat) {
super
();
this
.myFormat = myFormat;
}
@Override
protected
<Date> Date cast(DefaultJSONParser parser, Type clazz, Object fieldName, Object val) {
if
(myFormat ==
null
) {
return
null
;
}
if
(val
instanceof
String) {
String strVal = (String) val;
if
(strVal.length() ==
0
) {
return
null
;
}
try
{
return
(Date)
new
SimpleDateFormat(myFormat).parse((String)val);
}
catch
(ParseException e) {
throw
new
JSONException(
"parse error"
);
}
}
throw
new
JSONException(
"parse error"
);
}
}
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