利用boost获取时间并格式化的方法

#include <boost/date_time/gregorian/gregorian.hpp> 
#define BOOST_DATE_TIME_SOURCE 
   
std::string strTime = boost::gregorian::to_iso_string(\ 
boost::gregorian::day_clock::local_day()); 
   
std::cout << strTime.c_str() << std::endl;

#include <boost/date_time/posix_time/posix_time.hpp> 
#define BOOST_DATE_TIME_SOURCE 
   
std::string strTime = boost::posix_time::to_iso_string(\ 
boost::posix_time::second_clock::local_time()); 
   
// 这时候strTime里存放时间的格式是YYYYMMDDTHHMMSS，日期和时间用大写字母T隔开了 
   
int pos = strTime.find('T'); 
strTime.replace(pos,1,std::string("-")); 
strTime.replace(pos + 3,0,std::string(":")); 
strTime.replace(pos + 6,0,std::string(":")); 
   
std::cout << strTime.c_str() << std::endl; 

#include <boost/date_time/posix_time/posix_time.hpp> 
#include <boost/thread.hpp> 
#define BOOST_DATE_TIME_SOURCE 
 
boost::posix_time::ptime time_now,time_now1; 
boost::posix_time::millisec_posix_time_system_config::time_duration_type time_elapse; 
 
// 这里为微秒为单位;这里可以将microsec_clock替换成second_clock以秒为单位; 
time_now = boost::posix_time::microsec_clock::universal_time(); 
 
// sleep 100毫秒; 
boost::this_thread::sleep(boost::posix_time::millisec(100)); 
 
time_now1 = boost::posix_time::microsec_clock::universal_time(); 
 
time_elapse = time_now1 - time_now; 
 
// 类似GetTickCount，只是这边得到的是2个时间的ticket值的差，以微秒为单位; 
int ticks = time_elapse.ticks(); 
 
// 得到两个时间间隔的秒数; 
int sec = time_elapse.total_seconds();