新增接口

Change Log

• 新增 getMessagesStatus 接口，根据 msgId 和 registrationId 查询当天的消息状态。返回的 status 值为 0-4 整型。分别表示：
  0 送达
  1 未送达
  2 用户不属于该 app
  3 用户属于该 app，但不属于该 msgid
  4 系统异常
  使用方式：

    public static void testGetMessageStatus() {
        JPushClient jPushClient = new JPushClient(masterSecret, appKey);
        CheckMessagePayload payload = CheckMessagePayload.newBuilder()
                .setMsgId(3993287034L)
                .addRegistrationIds(REGISTRATION_ID1, REGISTRATION_ID2, REGISTRATION_ID3)
                .setDate("2017-08-08")
                .build();
        try {
            Map<String, MessageStatus> map = jPushClient.getMessageStatus(payload);
            for (Map.Entry<String, MessageStatus> entry : map.entrySet()) {
                LOG.info("registrationId: " + entry.getKey() + " status: " + entry.getValue().getStatus());
            }
        } catch (APIConnectionException e) {
            LOG.error("Connection error. Should retry later. ", e);
        } catch (APIRequestException e) {
            LOG.error("Error response from JPush server. Should review and fix it. ", e);
            LOG.info("HTTP Status: " + e.getStatus());
            LOG.info("Error Code: " + e.getErrorCode());
            LOG.info("Error Message: " + e.getErrorMessage());
        }
    }