public <T extends PackObject> T  unPackMessage(String interfaceCode, String respValue, Class<T>  clazz, String sysType) throws IOException {

    log.info(">> unPackMessage start, interfaceCode is {}, respValue is {}", interfaceCode, respValue);

    Map<String, Object> result = null;

    // get pack_convert.prop file content

    PackConvertMessage packConvertMessage = getPackConvertFileContent();

    String func = packConvertMessage.getInterfaceMapping().get(interfaceCode);

    if (StringUtils.isBlank(func)){

        log.error("<< unPackMessage error, No response message with current interface configured");

        return null;

    }

    String respSerialNumber = packConvertMessage.getRespFuncMapping().get(func);

    String currPackType = PackConvertConstant.SystermType.CLIENT.equals(sysType) ? client_pack_type : pack_type;

    switch (currPackType){

        case PackConvertConstant.PackType.NON_FIXED_LENGTH:

            result = unpackNoFixedMessage(respValue, connect_char, respSerialNumber, PACK_CONVERT_FILE_MAPPING_SEPARATOR, sysType);

            break;

        case  PackConvertConstant.PackType.FIXED_LENGTH:

            result = unpackFixedMessage(respValue, respSerialNumber, PACK_CONVERT_FILE_MAPPING_SEPARATOR);

            break;

        case  PackConvertConstant.PackType.XML:

            result = unpackXmlMessage(respValue, respSerialNumber, PACK_CONVERT_FILE_MAPPING_SEPARATOR);

            break;

        case PackConvertConstant.PackType.JSON:

            result = unpackJsonMessage(respValue, respSerialNumber);

            break;

    }

    log.info("<< unPackMessage success, return value is {}", JSON.toJSONString(result));

    T t = JSON.toJavaObject(JSON.parseObject(JSON.toJSONString(result)), clazz);

    return t;

}

 public <E extends BaseLiquidation, T extends BaseLiquidation> List<E> convertFileToObj(String localFilePath, Class<E> clazz, Class<T> tclazz) throws IOException, NoSuchMethodException, IllegalAccessException, InstantiationException {

     logger.info(">> convertFileToObj, localFilePath is {}, clazz is {}", localFilePath, clazz.getName());

     BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(localFilePath),"utf-8"));

     StringBuilder sb = new StringBuilder();

     String line;

     while ((line = br.readLine()) != null){

         sb.append(line);

         sb.append(System.getProperty("line.separator"));

     }

     List<E> result = messageToObj(sb.toString(), clazz);

     logger.info("<< convertFileToObj end");

     return result;

}

public <E extends BaseLiquidation> List<E> convertFileToObj(String localFilePath, Class<E> clazz) throws IOException, NoSuchMethodException, IllegalAccessException, InstantiationException {

    logger.info(">> convertFileToObj, localFilePath is {}, clazz is {}", localFilePath, clazz.getName());

    BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(localFilePath),"utf-8"));

    StringBuilder sb = new StringBuilder();

    String line;

    while ((line = br.readLine()) != null){

        sb.append(line);

        sb.append(System.getProperty("line.separator"));

    }

    List<E> result = messageToObj(sb.toString(), clazz);

    logger.info("<< convertFileToObj end");

    return result;

}