对日期的序列化:
一种方法是通过注解
Java代码
@JSONField (format="yyyy-MM-dd HH:mm:ss")
public Date birthday;
另一种是通过SerializeConfig:
Java代码
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)); }
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:
public class User {
@JSONField(name="ID")
public int getId() { ... }
}
User user = ...;
JSON.toJSONString(user); // {"ID":001}
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);
}
}
自定义反序列化示例:
先自定义一个日期解析类:
Java代码
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"); } }转自:http://my.oschina.net/u/1444624/blog/375740