2025年WinHttp 类封装「建议收藏」

头文件

#pragma once

#include 

#include 

#include 

using std::string;

using std::wstring;





bool libHttp_Get(wstring wszServerName,WORD nServerPort, wstring wszObjectName, string &result);



bool libHttp_Post(wstring wszServerName,WORD nServerPort, wstring wszObjectName,string &postData, string &result);



bool libHttp_DownloadFile(const wchar_t *wszURL, const wchar_t *wszFileSavePath);

源文件

#include "StdAfx.h"

#include "libHttp.h"



#include 

#include 

#include  

#pragma comment(lib,"winhttp.lib")



bool libHttp_Get(wstring wszServerName,WORD nServerPort, wstring wszObjectName, string &result)

{ 

   
HINTERNET  hSession = NULL;
HINTERNET  hConnect = NULL;
HINTERNET  hRequest = NULL;
BOOL  bResults = FALSE;
	
hSession = WinHttpOpen(L"Mozilla/5.0 (Windows NT 6.1; WOW64) Chrome/45.0.2454.101",
					   WINHTTP_ACCESS_TYPE_NO_PROXY,
					   NULL,
					   NULL,
					   0);
hConnect = WinHttpConnect(hSession, wszServerName.c_str(), nServerPort, 0);	// WINHTTP_FLAG_ASYNC 指示WinHTTP API将异步执行
hRequest = WinHttpOpenRequest(hConnect, L"GET", wszObjectName.c_str(), L"HTTP/1.1", WINHTTP_NO_REFERER,WINHTTP_DEFAULT_ACCEPT_TYPES, 0);
bResults = WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0 );
bResults = WinHttpReceiveResponse(hRequest, NULL);


if(!bResults)
{ 

   
	if (hRequest) WinHttpCloseHandle(hRequest);
	if (hConnect) WinHttpCloseHandle(hConnect);
	if (hSession) WinHttpCloseHandle(hSession);
	return false;
}


DWORD dwNumberOfBytesToRead = 0;
DWORD dwNumberOfBytesRead = 0;;
do 
{ 

   


	dwNumberOfBytesToRead = 0;
	WinHttpQueryDataAvailable(hRequest, &dwNumberOfBytesToRead);
	if(dwNumberOfBytesToRead <= 0) break;




	char *pbufRecv = new char[dwNumberOfBytesToRead + 1];
	ZeroMemory(pbufRecv, dwNumberOfBytesToRead + 1);
	WinHttpReadData( hRequest, (LPVOID)pbufRecv, dwNumberOfBytesToRead, &dwNumberOfBytesRead);


	result += string(pbufRecv);
			
	delete [] pbufRecv;
	pbufRecv = NULL;


} while (dwNumberOfBytesToRead > 0);


if (hRequest) WinHttpCloseHandle(hRequest);
if (hConnect) WinHttpCloseHandle(hConnect);
if (hSession) WinHttpCloseHandle(hSession);


return true;

}



bool libHttp_Post(wstring wszServerName,WORD nServerPort, wstring wszObjectName,string &postData, string &result)

{ 

   
HINTERNET  hSession = NULL;
HINTERNET  hConnect = NULL;
HINTERNET  hRequest = NULL;
BOOL  bResults = FALSE;


hSession = WinHttpOpen(L"Mozilla/5.0 (Windows NT 6.1; WOW64) Chrome/45.0.2454.101",
	WINHTTP_ACCESS_TYPE_NO_PROXY,
	NULL,
	NULL,
	0);
hConnect = WinHttpConnect(hSession, wszServerName.c_str(), nServerPort, 0);	// WINHTTP_FLAG_ASYNC 指示WinHTTP API将异步执行
hRequest = WinHttpOpenRequest(hConnect, L"POST", wszObjectName.c_str(), L"HTTP/1.1", WINHTTP_NO_REFERER,WINHTTP_DEFAULT_ACCEPT_TYPES, 0);
//bResults = WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0 );
bResults = WinHttpSendRequest(hRequest, 0, 0, (void*)(postData.c_str()), postData.length(), postData.length(), 0);
bResults = WinHttpReceiveResponse(hRequest, NULL);


if(!bResults)
{ 

   
	if (hRequest) WinHttpCloseHandle(hRequest);
	if (hConnect) WinHttpCloseHandle(hConnect);
	if (hSession) WinHttpCloseHandle(hSession);
	return false;
}


DWORD dwNumberOfBytesToRead = 0;
DWORD dwNumberOfBytesRead = 0;;
do 
{ 

   


	dwNumberOfBytesToRead = 0;
	WinHttpQueryDataAvailable(hRequest, &dwNumberOfBytesToRead);
	if(dwNumberOfBytesToRead <= 0) break;




	char *pbufRecv = new char[dwNumberOfBytesToRead + 1];
	ZeroMemory(pbufRecv, dwNumberOfBytesToRead + 1);
	WinHttpReadData( hRequest, (LPVOID)pbufRecv, dwNumberOfBytesToRead, &dwNumberOfBytesRead);


	result += string(pbufRecv);


	delete [] pbufRecv;
	pbufRecv = NULL;


} while (dwNumberOfBytesToRead > 0);


if (hRequest) WinHttpCloseHandle(hRequest);
if (hConnect) WinHttpCloseHandle(hConnect);
if (hSession) WinHttpCloseHandle(hSession);


return true;

}



typedef struct _URL_INFO

{ 

   
WCHAR szScheme[512];
WCHAR szHostName[512];
WCHAR szUserName[512];
WCHAR szPassword[512];
WCHAR szUrlPath[512];
WCHAR szExtraInfo[512];

}URL_INFO, *PURL_INFO;



bool libHttp_DownloadFile(const wchar_t *wszURL, const wchar_t *wszFileSavePath)

{ 

   

    URL_INFO url_info = { 

    0 };

    URL_COMPONENTSW lpUrlComponents = { 

    0 };

    lpUrlComponents.dwStructSize = sizeof(lpUrlComponents);

    lpUrlComponents.lpszExtraInfo = url_info.szExtraInfo;

    lpUrlComponents.lpszHostName = url_info.szHostName;

    lpUrlComponents.lpszPassword = url_info.szPassword;

    lpUrlComponents.lpszScheme = url_info.szScheme;

    lpUrlComponents.lpszUrlPath = url_info.szUrlPath;

    lpUrlComponents.lpszUserName = url_info.szUserName;



    lpUrlComponents.dwExtraInfoLength = 
lpUrlComponents.dwHostNameLength = 
lpUrlComponents.dwPasswordLength = 
lpUrlComponents.dwSchemeLength = 
lpUrlComponents.dwUrlPathLength = 
lpUrlComponents.dwUserNameLength = 512;



    WinHttpCrackUrl(wszURL, 0, ICU_ESCAPE, &lpUrlComponents);



    HINTERNET hSession = WinHttpOpen(NULL, WINHTTP_ACCESS_TYPE_NO_PROXY, NULL, NULL, 0);

    DWORD dwReadBytes, dwSizeDW = sizeof(dwSizeDW), dwContentSize, dwIndex = 0;



    HINTERNET hConnect = WinHttpConnect(hSession, lpUrlComponents.lpszHostName, lpUrlComponents.nPort, 0);



    HINTERNET hRequest = WinHttpOpenRequest(hConnect, L"HEAD", lpUrlComponents.lpszUrlPath, L"HTTP/1.1", WINHTTP_NO_REFERER, WINHTTP_DEFAULT_ACCEPT_TYPES, WINHTTP_FLAG_REFRESH);

    WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0);

    WinHttpReceiveResponse(hRequest, 0);

    WinHttpQueryHeaders(hRequest, WINHTTP_QUERY_CONTENT_LENGTH | WINHTTP_QUERY_FLAG_NUMBER, NULL, &dwContentSize, &dwSizeDW, &dwIndex);

    WinHttpCloseHandle(hRequest);



    // 创建一个请求，获取数据

    hRequest = WinHttpOpenRequest(hConnect, L"GET", lpUrlComponents.lpszUrlPath, L"HTTP/1.1", WINHTTP_NO_REFERER, WINHTTP_DEFAULT_ACCEPT_TYPES, WINHTTP_FLAG_REFRESH);

    WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0);

    WinHttpReceiveResponse(hRequest, 0);



    // 分段回调显示进度

    DWORD BUF_LEN = 1024, ReadedLen = 0;

    BYTE *pBuffer = NULL;

    pBuffer = new BYTE[BUF_LEN];


bool bRet = false;



    HANDLE hFile = CreateFileW(wszFileSavePath, GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

    while (dwContentSize > ReadedLen)

    { 

   

        ZeroMemory(pBuffer, BUF_LEN);

        WinHttpReadData(hRequest, pBuffer, BUF_LEN, &dwReadBytes);

        ReadedLen += dwReadBytes;

        WriteFile(hFile, pBuffer, dwReadBytes, &dwReadBytes, NULL);
	bRet = true;

    }



    CloseHandle(hFile);

    delete pBuffer;





    WinHttpCloseHandle(hRequest);

    WinHttpCloseHandle(hConnect);

    WinHttpCloseHandle(hSession);


return bRet;

}

2025年WinHttp 类封装「建议收藏」

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