自定义Gosn解析

compile 'com.google.code.gson:gson:2.8.1'


public class ParseUtils {
    public static  T parseJson(String result, Type t) {
        JsonParser parser = new JsonParser();
        JsonElement element = parser.parse(result.toString());
        JsonObject root = element.getAsJsonObject();
        JsonElement itemElement = root.get("data");
        String data = itemElement.toString();
        if (data == null || data.equalsIgnoreCase("null")
                || data.equals("{}") || data.equals("[]")) {
            return null;
        }
        try {
            Gson gson = new GsonBuilder().registerTypeAdapter(
                    Date.class, new JsonDateDeserializer()).serializeNulls().create();
            return gson.fromJson(data, t);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }

    }
public static String toJson(Object obj) {
        Gson gson = new GsonBuilder().registerTypeAdapter(Date.class,
                new JsonDateSerializer()).create();
        return gson.toJson(obj);
    }

    static class JsonDateDeserializer implements JsonDeserializer {

        @Override
        public Date deserialize(JsonElement je, Type arg1,
                                JsonDeserializationContext arg2) throws JsonParseException {
            String s = je.getAsJsonPrimitive().getAsString();
            long l = Long.parseLong(s.substring(6, s.length() - 2));
            Date d = new Date(l);
            return d;
        }
    }
}