JSONObject處理java.util.Date

JSONObject的內容為：

{"userId":"A000004FFDCE14","userName":"好好干g","userMp":"1820257596","clientName":"風格","regDate":"2016-07-05 00:00:00","startDate":"2016-07-05 00:00:00","endDate":"2017-09-05 00:00:00","times":15458,"master":"master","yesorno":3}]

 

List<PreparedInfo> listpre = PreApplyConvertEntity.secectlistinfo();

			Gson gson = new GsonBuilder().registerTypeHierarchyAdapter(Date.class, new DateTypeAdapter())
					.setDateFormat("yyyy-MM-dd HH:mm:ss").create();

			String json = gson.toJson(listpre);
			System.out.println(json);

			JSONArray ja = JSONArray.fromObject(json);
			for (int i = 0; i < ja.size(); i++) {
				JSONObject jo = ja.getJSONObject(i);
				String[] dateFormats = new String[] {"yyyy-MM-dd HH:mm:ss" };
				JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(dateFormats));
				PreparedInfo person = (PreparedInfo) JSONObject.toBean(jo, PreparedInfo.class);
				System.out.println(person);

　

DateTypeAdapter類：
    public class DateTypeAdapter implements JsonSerializer<Date> ,JsonDeserializer<Date> {
    private final SimpleDateFormat dateFormate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    @Override
    public Date deserialize(JsonElement json, Type date, JsonDeserializationContext context) throws JsonParseException {
        // TODO Auto-generated method stub
        if (!(json instanceof JsonPrimitive)) {  
            throw new JsonParseException("The date should be a string value");  
        }  
  
        try {  
            return  dateFormate.parse(json.getAsString()); 
            
            
        } catch (ParseException e) {  
            throw new JsonParseException(e);  
        }  
     
        
        
    }

    @Override
    public JsonElement serialize(Date src, Type arg1, JsonSerializationContext arg2) {
        String dateFormatAsString = dateFormate.format(new Date(src.getTime()));  
        return new JsonPrimitive(dateFormatAsString);  
        
    }
  
}

 

其中 ：List<PreparedInfo> listpre = PreApplyConvertEntity.secectlistinfo();

			Gson gson = new GsonBuilder().registerTypeHierarchyAdapter(Date.class, new DateTypeAdapter()).setDateFormat("yyyy-MM-dd HH:mm:ss").create();

			String json = gson.toJson(listpre);
  將List集合對象轉換成jsonstring 對象！

　　

 

還有：String[] dateFormats = new String[] {"yyyy-MM-dd HH:mm:ss" };
				JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(dateFormats));
				PreparedInfo person = (PreparedInfo) JSONObject.toBean(jo, PreparedInfo.class);
 解決不要這段代碼時轉換並不拋出例外，而是在日志中打出以下警告信息： Can't transform property 'birthday' from java.lang.String into java.util.Date. Will register a default Morpher 的解決辦法

　　

              最后 有時我們想將日期保存到數據庫時用 java.util.Date 就會出錯,一定要用java.sql.Date 這是在使用 JDBC 的情況下,在這種情況下就要將 java.util.Date 轉換為 java.sql.Date,下面就是示例代碼 java.util.Date utilDate = new java.util.Date(); java.sql.Date sqlDate = new java.sql.Date(utilDate.getTime());