MFC代码中如何实现上传图片到 http://169.254.1.10:8090/api/v1/~bali/ABC0123456789

实现上传图片到指定的 URL 地址需要使用 HTTP 协议进行网络通信。MFC中提供了 CHttpFile 类来实现 HTTP 的文件上传和下载。具体实现步骤如下：

1. 打开文件：

CFile file;
if (!file.Open(filePath, CFile::modeRead))
{
    // 打开文件失败
    return FALSE;
}

2. 创建 CHttpConnection 对象：

CHttpConnection* pConnection = nullptr;
pConnection = session.GetHttpConnection(serverName, serverPort);
if (!pConnection)
{
    // 创建连接失败
    return FALSE;
}

3. 构建 HTTP 请求：

CHttpFile* pFile = nullptr;
pFile = pConnection->OpenRequest(CHttpConnection::HTTP_VERB_POST, urlPath);
if (!pFile)
{
    // 创建请求失败
    return FALSE;
}

4. 添加请求头：

CString strHeaders = _T("Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW\r\n");
pFile->AddRequestHeaders(strHeaders);

5. 构建请求体：

CString strBoundary = _T("------WebKitFormBoundary7MA4YWxkTrZu0gW");
CString strPostData = _T("");
strPostData.AppendFormat(_T("%s\r\n"), strBoundary);

strPostData.AppendFormat(_T("Content-Disposition: form-data; name=\"file\"; filename=\"%s\"\r\n"), fileName);
strPostData.AppendFormat(_T("Content-Type: %s\r\n\r\n"), contentType);

pFile->WriteString(strPostData);

BYTE buffer[1024];
UINT nRead = 0;
while ((nRead = file.Read(buffer, 1024)) > 0)
{
    pFile->Write(buffer, nRead);
}

pFile->WriteString(_T("\r\n"));
pFile->WriteString(strBoundary + _T("--"));

6. 发送请求：

pFile->EndRequest();
DWORD dwStatusCode = 0;
pFile->QueryInfoStatusCode(dwStatusCode);
if (dwStatusCode != HTTP_STATUS_OK)
{
    // 上传失败
    return FALSE;
}

7. 关闭连接和文件：

pFile->Close();
pConnection->Close();
file.Close();

完整的示例代码如下：

BOOL UploadImage(LPCTSTR filePath)
{
    CString serverName = _T("169.254.1.10");
    INTERNET_PORT serverPort = 8090;
    CString urlPath = _T("/api/v1/~bali/ABC0123456789");

    CInternetSession session;
    CFile file;
    if (!file.Open(filePath, CFile::modeRead))
    {
        // 打开文件失败
        return FALSE;
    }

    CHttpConnection* pConnection = nullptr;
    pConnection = session.GetHttpConnection(serverName, serverPort);
    if (!pConnection)
    {
        // 创建连接失败
        return FALSE;
    }

    CHttpFile* pFile = nullptr;
    pFile = pConnection->OpenRequest(CHttpConnection::HTTP_VERB_POST, urlPath);
    if (!pFile)
    {
        // 创建请求失败
        return FALSE;
    }

    CString strHeaders = _T("Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW\r\n");
    pFile->AddRequestHeaders(strHeaders);

    CString fileName = _T("test.jpg");
    CString contentType = _T("image/jpeg");

    CString strBoundary = _T("------WebKitFormBoundary7MA4YWxkTrZu0gW");
    CString strPostData = _T("");
    strPostData.AppendFormat(_T("%s\r\n"), strBoundary);

    strPostData.AppendFormat(_T("Content-Disposition: form-data; name=\"file\"; filename=\"%s\"\r\n"), fileName);
    strPostData.AppendFormat(_T("Content-Type: %s\r\n\r\n"), contentType);

    pFile->WriteString(strPostData);

    BYTE buffer[1024];
    UINT nRead = 0;
    while ((nRead = file.Read(buffer, 1024)) > 0)
    {
        pFile->Write(buffer, nRead);
    }

    pFile->WriteString(_T("\r\n"));
    pFile->WriteString(strBoundary + _T("--"));

    pFile->EndRequest();
    DWORD dwStatusCode = 0;
    pFile->QueryInfoStatusCode(dwStatusCode);
    if (dwStatusCode != HTTP_STATUS_OK)
    {
        // 上传失败
        return FALSE;
    }

    pFile->Close();
    pConnection->Close();
    file.Close();

    return TRUE;
}