JSONEasy的项目地址：http://git.oschina.net/leqisoft/jsoneasy

JSONDateHandler:日期与JSON数据相互转换的处理工具

Calendar转换为JSON

String format = "yyyy-MM-dd";
JSONDateHandler handler = new JSONDateHandler(format);
Calendar date = Calendar.getInstance();
SONObject jsonObject = handler.toJSON(date);
System.err.println(jsonObject);

输出：

{"claz":"java.util.GregorianCalendar","format":"yyyy-MM-dd","value":"2016-04-27”}

JSON转换为Calendar：

String json = "{\"claz\":\"java.util.Calendar\",\"format\":\"yyyy-MM-dd hh:mm:ss\",\"value\":\"2016-04-03 09:10:22\"}";String format = "yyyy-MM-dd hh:mm:ss";JSONDateHandler<Calendar> handler = new JSONDateHandler<Calendar>(format);Calendar date = handler.toObject(this.getJSONObject(json));Assert.assertEquals(2016, date.get(Calendar.YEAR));Assert.assertEquals(4,  date.get(Calendar.MONTH)+1);Assert.assertEquals(3,  date.get(Calendar.DAY_OF_MONTH));Assert.assertEquals(9,  date.get(Calendar.HOUR_OF_DAY));Assert.assertEquals(10,  date.get(Calendar.MINUTE));

Date转换为JSON

String format = "yyyy-MM-dd hh:mm:ss";JSONDateHandler handler = new JSONDateHandler(format);Date date = new Date();String dateStr = DateUtil.formatDate(date, format);JSONObject jsonObject = handler.toJSON(date);System.err.println(jsonObject);

输出：

{"claz":"java.util.Date","format":"yyyy-MM-dd hh:mm:ss","value":"2016-04-27 10:26:41”}

JSON转换为Date：

String json = "{\"claz\":\"java.util.Date\",\"format\":\"yyyy-MM-dd hh:mm:ss\",\"value\":\"2016-04-03 09:10:22\"}";String format = "yyyy-MM-dd hh:mm:ss";JSONDateHandler<Date> handler = new JSONDateHandler<Date>(format);Date date = handler.toObject(this.getJSONObject(json));Assert.assertEquals(2016, date.getYear()+1900);Assert.assertEquals(4, date.getMonth()+1);Assert.assertEquals(3, date.getDate());Assert.assertEquals(9, date.getHours());Assert.assertEquals(10, date.getMinutes());