package com.alibaba.fastjson.serializer; import java.io.IOException; import java.lang.reflect.Type; import java.util.Calendar; import java.util.Date; public class CalendarSerializer implements ObjectSerializer { public final static CalendarSerializer instance = new CalendarSerializer(); public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType) throws IOException { Calendar calendar = (Calendar) object; Date date = calendar.getTime(); serializer.write(date); } }