用winInet实现Http Post上报数据
winInet是微软封装的一个使用起来特别复杂的库，具体函数可以在微软官网中查阅。
主要用到的函数：
-
InternetCrackUrl ：解析URL
-
InternetOpenW ：初始化应用程序对WinINet函数的使用。
-
InternetConnectW ：打开给定站点的文件传输协议（FTP）或HTTP会话。
-
HttpOpenRequest ：创建HTTP请求句柄。
-
HttpSendRequestExW ：将指定的请求发送到HTTP服务器。
-
InternetWriteFile ：将数据写入打开的Internet文件。
-
HttpEndRequest ：结束由HttpSendRequestEx启动的HTTP请求。
-
InternetCloseHandle ：关闭一个Internet句柄。
程序如下：
函数接收一个URL，一个要发送的字符串和字符串的长度。
#include <WinInet.h>
#pragma comment(lib, "WinInet.lib")
BOOL HttpReportToBuffer(wstring lpUrl, LPCVOID lpBuffer, DWORD sz)
{
BOOL Judge = TRUE;
HINTERNET hInternet = NULL;
HINTERNET hConnect = NULL;
HINTERNET hRequest = NULL;
do
{
//解析URL
URL_COMPONENTS urlComp = { 0 };
WCHAR Scheme[MAX_PATH] = { 0 };
WCHAR HostName[MAX_PATH] = { 0 };
WCHAR UserName[MAX_PATH] = { 0 };
WCHAR Password[MAX_PATH] = { 0 };
WCHAR UrlPath[MAX_PATH] = { 0 };
WCHAR ExtraInfo[MAX_PATH] = { 0 };
urlComp.dwSchemeLength = MAX_PATH;
urlComp.dwHostNameLength = MAX_PATH; ////主机名
urlComp.dwUserNameLength = MAX_PATH;
urlComp.dwPasswordLength = MAX_PATH;
urlComp.dwUrlPathLength = MAX_PATH;
urlComp.dwExtraInfoLength = MAX_PATH;
urlComp.dwStructSize = sizeof(urlComp);
urlComp.lpszScheme = Scheme;
urlComp.lpszHostName = HostName;
urlComp.lpszUserName = UserName;
urlComp.lpszPassword = Password;
urlComp.lpszUrlPath = UrlPath;
urlComp.lpszExtraInfo = ExtraInfo;
if (InternetCrackUrlW(lpUrl.c_str(), 0, 0, &urlComp) == FALSE)
{
Judge = FALSE;
break;
}
//建立会话
hInternet = InternetOpenW(L"shangbao", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
if (hInternet == NULL)
{
Judge = FALSE;
break;
}
cout << "建立会话" << endl;
//建立连接
hConnect = InternetConnectW(hInternet, urlComp.lpszHostName, INTERNET_DEFAULT_HTTP_PORT, urlComp.lpszUserName, urlComp.lpszPassword, INTERNET_SERVICE_HTTP, 0, 0);
if (hConnect == NULL)
{
Judge = FALSE;
break;
}
cout << "建立连接" << endl;
//http请求句柄
DWORD dwOpenRequestFlags = INTERNET_FLAG_IGNORE_REDIRECT_TO_HTTP | INTERNET_FLAG_KEEP_CONNECTION | INTERNET_FLAG_NO_AUTH | INTERNET_FLAG_NO_COOKIES | INTERNET_FLAG_NO_UI;
hRequest = HttpOpenRequestW(hConnect, L"POST",urlComp.lpszUrlPath, NULL, NULL, NULL, dwOpenRequestFlags, 0);
if (hRequest == NULL)
{
Judge = FALSE;
break;
}
cout << "请求成功" <<endl;
//发送请求
INTERNET_BUFFERS internetBuffers = { 0 };
::RtlZeroMemory(&internetBuffers, sizeof(internetBuffers));
internetBuffers.dwStructSize = sizeof(internetBuffers);
internetBuffers.dwBufferTotal = sz; //数据大小
if (HttpSendRequestExW(hRequest, &internetBuffers, NULL, 0, 0) == FALSE)
{
Judge = FALSE;
break;
}
cout << "请求发送成功" <<endl;
//发送数据
DWORD dwret = 0;
if (InternetWriteFile(hRequest, lpBuffer, sz, &dwret) == FALSE)
{
Judge = FALSE;
break;
}
cout << "发送数据成功" <<endl;
//结束请求
if (HttpEndRequestW(hRequest, NULL, 0, 0) == FALSE)
{
Judge = FALSE;
break;
}
cout << "结束成功" <<endl;
} while (FALSE);
if (hInternet != NULL)
{
InternetCloseHandle(hInternet);
}
if (hConnect != NULL)
{
InternetCloseHandle(hConnect);
}
if (hRequest != NULL)
{
InternetCloseHandle(hRequest);
}
return Judge;
}
