// deleteOldFiles.cpp : 定义控制台应用程序的入口点。//#include "stdafx.h"#include <windows.h>#include <string>#include <iostream>#include <stdio.h>#include <conio.h>#include <sys/types.h>#include <sys/stat.h>using namespace std;#pragma warning(disable:4996)int main(){//typedef struct _SYSTEMTIME {//WORDwYear;//WORDwMonth;//WORDwDayOfWeek;//WORDwDay;//WORDwHour;//WORDwMinute;//WORDwSecond;//WORDwMilliseconds;//} SYSTEMTIME, *PSYSTEMTIME, *LPSYSTEMTIME;//得到当前UTC时间SYSTEMTIME st;GetSystemTime(&st);char buf[128] = { 0 };sprintf_s(buf,"%04d-%02d-%02d %02d:%02d:%02d:%03d",st.wYear,st.wMonth,st.wDay,st.wHour,st.wMinute,st.wSecond,st.wMilliseconds);cout << "UTC时间为" << buf << endl;//得到本地时间SYSTEMTIME stLocal;GetLocalTime(&stLocal);memset(buf, 0, 128);sprintf_s(buf, "%04d-%02d-%02d %02d:%02d:%02d:%03d", stLocal.wYear, stLocal.wMonth, stLocal.wDay, stLocal.wHour, stLocal.wMinute, stLocal.wSecond, stLocal.wMilliseconds);cout << "本地时间为" << buf << endl;//FileTime:Contains a 64-bit value representing the number of 100-nanosecond intervals since January 1, 1601 (UTC时间).//从1601到现在经历的100纳秒数，8个字节变量//typedef struct _FILETIME {//DWORDdwLowDateTime;//DWORDdwHighDateTime;//} FILETIME, *PFILETIME, *LPFILETIME;//SYSTEMTIME转成FILETIME//BOOL//WINAPI//SystemTimeToFileTime(//_In_ CONST SYSTEMTIME * lpSystemTime,//_Out_ LPFILETIME lpFileTime//);//SYSTEMTIME转FILETIMEFILETIME ft;SystemTimeToFileTime(&st, &ft);//FILETIME转SYSTEMTIMESYSTEMTIME st2;FileTimeToSystemTime(&ft, &st2);memset(buf, 0, 128);sprintf_s(buf, "%04d-%02d-%02d %02d:%02d:%02d:%03d", st2.wYear, st2.wMonth, st2.wDay, st2.wHour, st2.wMinute, st2.wSecond, st2.wMilliseconds);cout << "UTC时间为" << buf << endl;//当地时间转UTC时间FILETIME ftLocal;SystemTimeToFileTime(&stLocal, &ftLocal);LocalFileTimeToFileTime(&ftLocal, &ft);FileTimeToSystemTime(&ft, &st2);memset(buf, 0, 128);sprintf_s(buf, "%04d-%02d-%02d %02d:%02d:%02d:%03d", st2.wYear, st2.wMonth, st2.wDay, st2.wHour, st2.wMinute, st2.wSecond, st2.wMilliseconds);cout << "UTC时间为" << buf << endl;FileTimeToLocalFileTime(&ft, &ftLocal);FileTimeToSystemTime(&ftLocal, &stLocal);memset(buf, 0, 128);sprintf_s(buf, "%04d-%02d-%02d %02d:%02d:%02d:%03d", stLocal.wYear, stLocal.wMonth, stLocal.wDay, stLocal.wHour, stLocal.wMinute, stLocal.wSecond, stLocal.wMilliseconds);cout << "本地时间为" << buf << endl;//获取十天之前的日期ULARGE_INTEGER u1,offset,u2;offset.QuadPart = UInt32x32To64(10 * 24 * 3600, 10000000);u1.LowPart = ftLocal.dwLowDateTime;u1.HighPart = ftLocal.dwHighDateTime;u2.QuadPart = u1.QuadPart - offset.QuadPart;ftLocal.dwLowDateTime = u2.LowPart;ftLocal.dwHighDateTime = u2.HighPart;SYSTEMTIME stOld;FileTimeToSystemTime(&ftLocal, &stOld);memset(buf, 0, 128);sprintf_s(buf, "%04d-%02d-%02d %02d:%02d:%02d:%03d", stOld.wYear, stOld.wMonth, stOld.wDay, stOld.wHour, stOld.wMinute, stOld.wSecond, stOld.wMilliseconds);cout << "十天前时间为" << buf << endl;//获取文件的创建时间，修改时间，访问时间HANDLE handleFile = CreateFileW(L"F:\\output\\测试文档.docx", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);if (handleFile != INVALID_HANDLE_VALUE){FILETIME ftCreationTime, ftLastAccessTime, ftLastWriteTime;GetFileTime(handleFile, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime);SYSTEMTIME creatTime, accessTime, modifyTime;FILETIME ftCreationTimeLocal, ftLastAccessTimeLocal, stLastWriteTimeLocal;FileTimeToLocalFileTime(&ftCreationTime, &ftCreationTimeLocal);FileTimeToLocalFileTime(&ftLastAccessTime, &ftLastAccessTimeLocal);FileTimeToLocalFileTime(&ftLastWriteTime, &stLastWriteTimeLocal);FileTimeToSystemTime(&ftCreationTimeLocal, &creatTime);FileTimeToSystemTime(&ftLastAccessTimeLocal, &accessTime);FileTimeToSystemTime(&stLastWriteTimeLocal, &modifyTime);memset(buf, 0, 128);sprintf_s(buf, "%04d-%02d-%02d %02d:%02d:%02d:%03d", creatTime.wYear, creatTime.wMonth, creatTime.wDay, creatTime.wHour, creatTime.wMinute, creatTime.wSecond, creatTime.wMilliseconds);cout << "创建时间为" << buf << endl;memset(buf, 0, 128);sprintf_s(buf, "%04d-%02d-%02d %02d:%02d:%02d:%03d", accessTime.wYear, accessTime.wMonth, accessTime.wDay, accessTime.wHour, accessTime.wMinute, accessTime.wSecond, accessTime.wMilliseconds);cout << "访问时间为" << buf << endl;memset(buf, 0, 128);sprintf_s(buf, "%04d-%02d-%02d %02d:%02d:%02d:%03d", modifyTime.wYear, modifyTime.wMonth, modifyTime.wDay, modifyTime.wHour, modifyTime.wMinute, modifyTime.wSecond, modifyTime.wMilliseconds);cout << "修改时间为" << buf << endl;CloseHandle(handleFile);}return 0;}
运行结果：
filetime systemtime相互转化 获取文件创建时间 访问时间 修改时间 获取指定时间之前之后的SYSTEMTIME
