Question

有人可以指向一个基于winhttp / wininet的c ++包装器，它不需要mfc / atl吗？这样我就可以在MSVC express中使用它。

我希望能够通过HTML格式使用GET，POST和上传文件。

我在codeproject.com上检查了几个但是找不到合适的包装器。

有什么东西可以帮助我吗？

Answer 1

在这里，我让你成为一个让你入门的人。如果您使用的是MSVC，您应该学习如何深入了解dll并找到导出的函数。 DLL Export Viewer is what I used for this.您需要找到机器上wininet.dll的位置并相应地更改代码。我希望这有帮助。所以这是我的WinInetRTW类（运行时包装器）。

// wininetrtw.h

#ifndef WININETRTW_H
#define WININETRTW_H

#include <iostream>
#include <string>
#include <sstream>
#include <windows.h>
#include <wininet.h>

typedef HINTERNET (__cdecl *HttpOpenRequestFuncPtr)(HINTERNET, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR, DWORD, DWORD);
typedef HINTERNET (__cdecl *InternetConnectFuncPtr)(HINTERNET, LPCTSTR, INTERNET_PORT, LPCTSTR, LPCTSTR, DWORD, DWORD, DWORD_PTR);
typedef HINTERNET (__cdecl *InternetOpenFuncPtr)(LPCTSTR, DWORD, LPCTSTR, LPCTSTR, DWORD);
typedef HINTERNET (__cdecl *InternetOpenUrlFuncPtr)(HINTERNET, LPCTSTR, LPCTSTR, DWORD, DWORD, DWORD_PTR);
typedef BOOL (__cdecl *InternetReadFileFuncPtr)(HINTERNET, LPVOID, DWORD, LPDWORD);

class WinInetRTW {

public:
    WinInetRTW();
    ~WinInetRTW();

    // WinInet functions
    bool LoadLibrary(std::string&);
    bool HttpOpenRequest(HINTERNET hConnect, LPCTSTR lpszVerb, LPCTSTR lpszObjectName, LPCTSTR lpszVersion, LPCTSTR lpszReferer, LPCTSTR *lplpszAcceptTypes, DWORD dwFlags, DWORD_PTR dwContext);
    bool InternetConnect(HINTERNET hInternet, LPCTSTR lpszServerName, INTERNET_PORT nServerPort, LPCTSTR lpszUsername, LPCTSTR lpszPassword, DWORD dwService, DWORD dwFlags, DWORD_PTR dwContext);
    bool InternetOpen(LPCTSTR lpszAgent, DWORD dwAccessType, LPCTSTR lpszProxyName, LPCTSTR lpszProxyBypass, DWORD dwFlags);
    bool InternetOpenUrl(HINTERNET, LPCTSTR, LPCTSTR, DWORD, DWORD, DWORD_PTR);
    bool InternetReadFile(HINTERNET, LPVOID, DWORD, LPDWORD);

    // Helper methods
    bool InternetReadFileToBuffer(HINTERNET);

    // Results from respective methods
    HINTERNET InternetOpenResult;
    HINTERNET InternetConnectResult;
    HINTERNET HttpOpenRequestResult;
    HINTERNET InternetOpenUrlResult;
    std::stringstream InternetReadFileStream;

private:
    HttpOpenRequestFuncPtr HttpOpenRequestFunc;
    InternetConnectFuncPtr InternetConnectFunc;
    InternetOpenFuncPtr InternetOpenFunc;
    InternetOpenUrlFuncPtr InternetOpenUrlFunc;
    InternetReadFileFuncPtr InternetReadFileFunc;

};

#endif // WININETRTW_H

// wininetrtw.cpp

#include "wininetrtw.h"

WinInetRTW::WinInetRTW()
{
}

WinInetRTW::~WinInetRTW()
{
}

bool WinInetRTW::LoadLibrary(std::string& PathToDll)
{
    HINSTANCE dllInstance;
    dllInstance = ::LoadLibrary(PathToDll.c_str()); // Load library

    this->HttpOpenRequestFunc = reinterpret_cast<HttpOpenRequestFuncPtr>(::GetProcAddress(dllInstance, "HttpOpenRequest")); // Load function
    this->InternetConnectFunc = reinterpret_cast<InternetConnectFuncPtr>(::GetProcAddress(dllInstance, "InternetConnectA"));
    this->InternetOpenFunc = reinterpret_cast<InternetOpenFuncPtr>(::GetProcAddress(dllInstance, "InternetOpenA"));
    this->InternetOpenUrlFunc = reinterpret_cast<InternetOpenUrlFuncPtr>(::GetProcAddress(dllInstance, "InternetOpenUrlA"));
    this->InternetReadFileFunc = reinterpret_cast<InternetReadFileFuncPtr>(::GetProcAddress(dllInstance, "InternetReadFile"));

    if(!dllInstance){
        return false;
    }
    return true;
}

/*
 * http://msdn.microsoft.com/en-us/library/windows/desktop/aa384363(v=vs.85).aspx
 * */
bool WinInetRTW::InternetConnect(HINTERNET hInternet, LPCTSTR lpszServerName, INTERNET_PORT nServerPort, LPCTSTR lpszUsername, LPCTSTR lpszPassword, DWORD dwService, DWORD dwFlags, DWORD_PTR dwContext)
{
    InternetConnectResult = InternetConnectFunc(hInternet, lpszServerName, nServerPort, lpszUsername, lpszPassword, dwService, dwFlags, dwContext);
    if(!InternetConnectResult){
        return false;
    }
    return true;
}

/* 
 * http://msdn.microsoft.com/en-us/library/windows/desktop/aa385096(v=vs.85).aspx
 * */
bool WinInetRTW::InternetOpen(LPCTSTR lpszAgent, DWORD dwAccessType, LPCTSTR lpszProxyName, LPCTSTR lpszProxyBypass, DWORD dwFlags)
{
        this->InternetOpenResult = this->InternetOpenFunc(lpszAgent, dwAccessType, lpszProxyName, lpszProxyBypass, dwFlags);
        if(!this->InternetOpenResult){
            return false;
        }
        return true;
}

/*
 * http://msdn.microsoft.com/en-us/library/windows/desktop/aa385098(v=vs.85).aspx
 * */
bool WinInetRTW::InternetOpenUrl(HINTERNET hInternet, LPCTSTR lpszUrl, LPCTSTR lpszHeaders, DWORD dwHeadersLength, DWORD dwFlags, DWORD_PTR dwContext)
{
    InternetOpenUrlResult = InternetOpenUrlFunc(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext);
    if(!InternetOpenUrlResult){
        return false;
    }
    return true;
}

/* 
 * http://msdn.microsoft.com/en-us/library/windows/desktop/aa385103(v=vs.85).aspx
 * */
bool WinInetRTW::InternetReadFile(HINTERNET hFile, LPVOID lpBufferOut, DWORD dwNumberOfBytesToRead, LPDWORD lpdwNumberOfBytesReadOut)
{
    return InternetReadFileFunc(hFile, lpBufferOut, dwNumberOfBytesToRead, lpdwNumberOfBytesReadOut);
}

bool WinInetRTW::InternetReadFileToBuffer(HINTERNET hFile)
{
    DWORD dwRead;
    char Buffer[1024];

    while (this->InternetReadFile(hFile, Buffer, 1023, &dwRead ) )
    {
        if ( dwRead == 0 )
            break;
        Buffer[dwRead] = 0;
        InternetReadFileStream << Buffer;
    }

    return true;
}


// main.cpp

#include "wininetrtw.h"

using namespace std;

int main(int argc, char **argv)
{
    // Find the path to the file on your own system.
    string PathToDll = "C:\\Windows\\winsxs\\x86_microsoft-windows-i..tocolimplementation_31bf3856ad364e35_9.4.8112.16441_none_1a52f663bc299b3d\\wininet.dll";
    WinInetRTW net;

    if(net.LoadLibrary(PathToDll)){
        cout << "Library loaded!\n";
        net.InternetOpen("InetURL/1.0", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
        if(net.InternetOpenUrl(net.InternetOpenResult, "http://www.google.com", NULL, 0, 0, 0))
        {
            net.InternetReadFileToBuffer(net.InternetOpenUrlResult);
            cout << net.InternetReadFileStream.str();
        }
    }
    else{
        cout << "Library failed to load.";
    }

    cin.get();
    return 0;
}

c ++ winhttp / wininet包装器在没有mfc / atl的情况下发布表单和上传文件

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