msdn用winhttp c++​​上传图片

Question

我一整天都在尝试这个但是没有运气我想将图像文件上传到我创建的 php 文件但是当我尝试这样做时 winhttpsendrequest 会抛出 183 错误，这意味着无法发送已经发送的文件请有人指出我哪里错了

c++代码：

int _tmain(int argc, _TCHAR* argv[]) {

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

FILE *pFile;
long lSize;
char *buffer;
size_t result;

pFile = fopen("blog.jpg", "rb");

fseek(pFile, 0, SEEK_END);
lSize = ftell(pFile);
rewind(pFile);

buffer = (char *) malloc(sizeof(char) * lSize);

result = fread(buffer, 1, lSize, pFile);

fclose(pFile);

hSession = WinHttpOpen( L"WinHTTP Example/1.0",  
    WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,
    WINHTTP_NO_PROXY_NAME, 
    WINHTTP_NO_PROXY_BYPASS, 0);

if (hSession)
    hConnect = WinHttpConnect(hSession, L"localhost",
    INTERNET_DEFAULT_HTTP_PORT, 0);

if (hConnect)
    hRequest = WinHttpOpenRequest(hConnect, L"POST", L"locker/upload.php",
    NULL, WINHTTP_NO_REFERER, 
    WINHTTP_DEFAULT_ACCEPT_TYPES, 
    WINHTTP_FLAG_REFRESH);

static WCHAR frmdata[2048] = L"Connection: keep-alive\r\nContent-Type: multipart/form-data; -----------------------------7d82751e2bc0858\r\nContent-Disposition: form-data; name=\"file\"; filename=\"blog.jpg\"\r\nContent-Type: image/jpeg\r\n\r\n";

bResults = WinHttpSendRequest(hRequest,
    frmdata, wcslen(frmdata), buffer, 
    lSize, wcslen(frmdata)+lSize, 0);

if (bResults) {
    /*
    DWORD dwBytesWritten = 0;
    bResults = WinHttpWriteData(hRequest, buffer, 
        lSize, 
        &dwBytesWritten);
    if (bResults) {
        printf_s("Data: %d", dwBytesWritten);
    }
    */

} else {
    printf_s("SendReq: %d", GetLastError());
}


free(buffer);

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

getchar();

return 0;
    }

php代码：

if (isset($_FILES["file"])) {
$target_path = "uploads/";

$target_path = $target_path . basename( $_FILES['file']['name']); 

if(move_uploaded_file($_FILES['file']['tmp_name'], $target_path)) {
echo "The file ".  basename( $_FILES['file']['name']). " has been uploaded";
} else{
echo "There was an error uploading the file, please try again!";
}
}

Answer 1

凯沙夫奈尔。

试试这个代码：

CHAR postData[1024];
CHAR postData2[1024];
ZeroMemory(&postData,1024);
ZeroMemory(&postData2,1024);
WinHttpAddRequestHeaders(hRequest,L"Content-Type: multipart/form-data; boundary=----OiRBxC0fjdSEpqhd",-1L,WINHTTP_ADDREQ_FLAG_ADD);
wsprintfA(postData,"%s","----OiRBxC0fjdSEpqhd\r\nContent-Disposition: form-data; name=\"file\"; filename=\"blog.jpg\"\r\nContent-Type: image/jpeg\r\n\r\n");
wsprintfA(postData2,"%s","\r\n----OiRBxC0fjdSEpqhd\r\nContent-Disposition: form-data; name=\"submit\"\r\n\r\nSubmit\r\n----OiRBxC0fjdSEpqhd--\r\n");
bResults = WinHttpSendRequest( hRequest,
                                   WINHTTP_NO_ADDITIONAL_HEADERS,
                                   0, WINHTTP_NO_REQUEST_DATA, 0, 
                                   lstrlenA(postData)+lstrlenA(postData2)+lSize, NULL);
if (bResults)
{
    bResults=WinHttpWriteData(hRequest,LPCVOID)postData,lstrlenA(postData),NULL);
    bResults = WinHttpWriteData(hRequest, buffer, lSize, &dwBytesWritten);
    bResults=WinHttpWriteData(hRequest,(LPCVOID)postData2,lstrlenA(postData2),NULL);
}

WinHttpWriteData: POST 数据 - postData、postData2 必须是 8 位编码。