联网获取时间

1:服务器架构:

以PHP为例

<?php echo $showtime=date(“Y-m-d H:i:s”);?>

2:C++代码

 

#define MAXBLOCKSIZE 1024

#include <wininet.h>

#pragma comment( lib, “wininet.lib” )

#include <afxinet.h>

/*将Url指向的地址的文件下载到save_as指向的本地文件*/

BOOL download(const TCHAR *Url,const TCHAR *save_as)

{

BOOL bError=FALSE;

byte Temp[MAXBLOCKSIZE];

ULONG Number = 1;

ULONG Total=0;

HINTERNET hSession = InternetOpen((LPCWSTR)_T(“RookIE/1.0”), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);

if (hSession != NULL)

{

HINTERNET handle2 = InternetOpenUrl(hSession, (LPCWSTR)Url, NULL, 0, INTERNET_FLAG_DONT_CACHE, 0);

if (handle2 != NULL)

{    CFile file;

if(file.Ope(save_as,CFile::modeWrite|CFile::modeCreate|CFile::typeBinary))    {

while (Number > 0)

{

InternetReadFile(handle2, Temp, MAXBLOCKSIZE – 1, &Number);

if(Number>0)

{       Total+=Number;

file.Write(Temp, Number);

// 将实际数据写入文件

}

}

file.Close();

}

else

{

bError=TRUE;

}

InternetCloseHandle(handle2);

handle2 = NULL;

}

else

{

bError=TRUE;

}

InternetCloseHandle(hSession);

hSession = NULL;

return !bError;

}

else

{

return FALSE;

}

}

void CGetCurTimeDlg::OnBnClickedOk()

{

// TODO: 在此添加控件通知处理程序代码

TCHAR lpFile[MAX_PATH+1]={0};

GetTempPath(MAX_PATH,lpFile);

PathAppend(lpFile,_T(“CurTime.txt”));

if(!download(_T(“http://www.cadgj.com/curtime.php”),lpFile))  {

AfxMessageBox(_T(“联网下载时间文件失败”));

return;

}

try

{

CFile file;

if(!file.Open(lpFile,CFile::modeRead|CFile::typeBinary))   {

AfxMessageBox(_T(“读取时间文件失败”),MB_OK);

return;

}

byte* bytes=new byte[file.GetLength()+1];

memset(bytes,0,file.GetLength()+1);

file.Read(bytes,file.GetLength());

CString strText=CString((const char*)bytes);

delete[] bytes;

bytes=NULL;

file.Close();

COleDateTime dt1;

if(!dt1.ParseDateTime(strText))

{

AfxMessageBox(_T(“解析时间文件失败”),MB_OK);

return;

}

CString strDateTime;

strDateTime.Format(_T(“%.4d年%.2d月%.2d日%.2d时%.2d分%.2d秒”),dt1.GetYear(),dt1.GetMonth(),dt1.GetDay(),dt1.GetHour(),dt1.GetMinute(),dt1.GetSecond());

AfxMessageBox(strDateTime);

}

catch(…)

{   AfxMessageBox(_T(“读取文件发生异常”),MB_OK);

}

//OnOK();

}