MFC如何向 http://169.254.1.10:8090/api/v1/~bali/ABC0123456789 发送图片

在MFC中，可以使用WinHTTP库向指定URL发送HTTP请求并上传图片。以下是一个简单的示例代码：

#include <afxinet.h>
#include <winhttp.h>

BOOL UploadImage(LPCTSTR lpszFilePath, LPCTSTR lpszUrl)
{
    // 打开文件
    CFile file;
    if (!file.Open(lpszFilePath, CFile::modeRead))
    {
        return FALSE;
    }

    // 初始化WinHTTP
    HINTERNET hSession = WinHttpOpen(L"MFC WinHTTP Example",
                                     WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,
                                     WINHTTP_NO_PROXY_NAME,
                                     WINHTTP_NO_PROXY_BYPASS,
                                     WINHTTP_FLAG_ASYNC);
    if (!hSession)
    {
        return FALSE;
    }

    // 打开连接
    HINTERNET hConnect = WinHttpConnect(hSession, L"169.254.1.10", 8090, 0);
    if (!hConnect)
    {
        WinHttpCloseHandle(hSession);
        return FALSE;
    }

    // 打开请求
    HINTERNET hRequest = WinHttpOpenRequest(hConnect, L"POST", L"/api/v1/~bali/ABC0123456789",
                                            NULL, WINHTTP_NO_REFERER,
                                            WINHTTP_DEFAULT_ACCEPT_TYPES,
                                            WINHTTP_FLAG_REFRESH);
    if (!hRequest)
    {
        WinHttpCloseHandle(hConnect);
        WinHttpCloseHandle(hSession);
        return FALSE;
    }

    // 设置请求头
    CStringA strHeaders = "Content-Type: image/jpeg\r\n";
    if (!WinHttpAddRequestHeaders(hRequest, strHeaders, -1L, WINHTTP_ADDREQ_FLAG_REPLACE))
    {
        WinHttpCloseHandle(hRequest);
        WinHttpCloseHandle(hConnect);
        WinHttpCloseHandle(hSession);
        return FALSE;
    }

    // 发送请求
    if (!WinHttpSendRequest(hRequest, NULL, 0, NULL, 0, file.GetLength(), 0))
    {
        WinHttpCloseHandle(hRequest);
        WinHttpCloseHandle(hConnect);
        WinHttpCloseHandle(hSession);
        return FALSE;
    }

    // 上传数据
    DWORD dwBytesWritten = 0;
    DWORD dwBytesRead = 0;
    BYTE buffer[4096];
    while (dwBytesWritten < file.GetLength())
    {
        DWORD dwBytesToRead = min(sizeof(buffer), file.GetLength() - dwBytesWritten);
        file.Read(buffer, dwBytesToRead);
        if (!WinHttpWriteData(hRequest, buffer, dwBytesToRead, &dwBytesRead))
        {
            WinHttpCloseHandle(hRequest);
            WinHttpCloseHandle(hConnect);
            WinHttpCloseHandle(hSession);
            return FALSE;
        }

        dwBytesWritten += dwBytesRead;
    }

    // 结束请求
    if (!WinHttpReceiveResponse(hRequest, NULL))
    {
        WinHttpCloseHandle(hRequest);
        WinHttpCloseHandle(hConnect);
        WinHttpCloseHandle(hSession);
        return FALSE;
    }

    // 关闭连接
    WinHttpCloseHandle(hRequest);
    WinHttpCloseHandle(hConnect);
    WinHttpCloseHandle(hSession);

    return TRUE;
}

在调用该函数时，将图片文件路径和目标URL作为参数传入即可：

UploadImage(L"C:\\Images\\test.jpg", L"http://169.254.1.10:8090/api/v1/~bali/ABC0123456789");