使用 google gson 转换Timestamp或Date类型为JSON字符串.

http://blog.csdn.net/z69183787/article/details/13016289

 

创建类型适配类:

    import java.lang.reflect.Type;  

    import java.sql.Timestamp;  

    import java.text.DateFormat;  

    import java.text.ParseException;  

    import java.text.SimpleDateFormat;  

    import java.util.Date;  

      

    import com.google.gson.JsonDeserializationContext;  

    import com.google.gson.JsonDeserializer;  

    import com.google.gson.JsonElement;  

    import com.google.gson.JsonParseException;  

    import com.google.gson.JsonPrimitive;  

    import com.google.gson.JsonSerializationContext;  

    import com.google.gson.JsonSerializer;  

      

    public class TimestampTypeAdapter implements JsonSerializer<Timestamp>, JsonDeserializer<Timestamp>{  

        private final DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  

        public JsonElement serialize(Timestamp src, Type arg1, JsonSerializationContext arg2) {  

            String dateFormatAsString = format.format(new Date(src.getTime()));  

            return new JsonPrimitive(dateFormatAsString);  

        }  

      

        public Timestamp deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {  

            if (!(json instanceof JsonPrimitive)) {  

                throw new JsonParseException("The date should be a string value");  

            }  

      

            try {  

                Date date = format.parse(json.getAsString());  

                return new Timestamp(date.getTime());  

            } catch (ParseException e) {  

                throw new JsonParseException(e);  

            }  

        }  

      

    }  

  类型适配类

   应用类型适配器 写道

 

Gson gson = new GsonBuilder().registerTypeAdapter(Timestamp.class,new TimestampTypeAdapter()).setDateFormat("yyyy-MM-dd HH:mm:ss").create();

String jsonString = gson.toJson(resourceInfo,ResourceGeoInfo.class);

 

 Date 类型的时间转换第二种方式;

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

String jsonString = gson.toJson(new Date(System.currentTimeMillis()),Date.class);  

System.out.println(jsonString);