嗯,我明白了。不是最好的方式既不是漂亮的,但它的作品,因爲我知道,這兩個日期分別設置在同一臺服務器上,並總是以相同的格式\"2015-01-01T23:40:00.000000-03:00\"
這裏就是我所做的:
int convertToInt(std::string number_str){
int number;
std::istringstream ss(number_str);
ss.imbue(std::locale::classic());
ss >> number;
return number;
}
time_t convertDatetime(std::string date_str) {
time_t rawtime;
struct tm date;
int year, month, day, hour, min, sec;
date_str.erase(std::remove_if(date_str.begin(), date_str.end(), isspace), date_str.end());
year = convertToInt(date_str.substr(1, 4));
month = convertToInt(date_str.substr(6, 2));
day = convertToInt(date_str.substr(9, 2));
hour = convertToInt(date_str.substr(12, 2));
min = convertToInt(date_str.substr(15, 2));
sec = convertToInt(date_str.substr(18, 2));
time(&rawtime);
localtime_s(&date, &rawtime);
date.tm_year = year - 1900;
date.tm_mon = month - 1;
date.tm_mday = day;
date.tm_hour = hour;
date.tm_min = min;
date.tm_sec = sec;
return mktime(&date);
}
bool isValidIntervalDatetime(std::string actualDatetime_str, std::string oldDatetime_str, int maxMinutesInterval) {
double maxSecondsInterval = 60 * maxMinutesInterval;
time_t actualDatetime = convertDatetime(actualDatetime_str);
time_t oldDatetime = convertDatetime(oldDatetime_str);
double secondsDiff = difftime(actualDatetime, oldDatetime);
return secondsDiff <= maxSecondsInterval;
}
int main(int argc, char* argv[])
{
auto maxMinutesInterval = 20;
auto actuaDatetime = JsonConverter::toString(actualAccess["Date"]); // \"2015-01-02T00:00:00.000000-03:00\"
auto oldDatetime = JsonConverter::toString(oldAccess["Date"]); // \"2015-01-01T23:40:00.000000-03:00\"
if (isValidIntervalDatetime(actuaDatetime, oldDatetime, maxMinutesInterval){
//do something
}
}
問題是不是很清楚你是否需要將字符串轉換爲C#中的DateTime對象? – Marco
@Marco,datetime是在C#中創建的,以這種格式傳遞給Json:'2015-06-08T11:17:23.746389-03:00',比我需要在C++中進行轉換和比較 –
我認爲你應該考慮使用類似Boost.Date_Time來解析表示時間戳的字符串,然後進行所需的比較。 – dschulz