哪位朋友用winhttp post过数据?咋string.c_str()不行啊?服务器收不到但Const char *却行.

Question

本帖最后由 feethink 于 2010-03-10 21:37:15 编辑

Answer 1

if (!WinHttpSendRequest(hRequest, 
                szAdditionalHeader.c_str(), szAdditionalHeader.length(), 
                (LPVOID)dd, 11,11, 
                (DWORD_PTR)this))
            {
                sStatus.szInfo=L"WinHttpSendRequest网址失败!";
                goto cleanup;
            }

Answer 2

楼上的高人?szAdditionalHeader.length() sdk上边没这样说啊.再说那个是消息头.不关form数据的事吧.sdk上说只要设置为-1L.消息头会自动计算的.我试了你那样做.服务器一样没收到..

Answer 3

这个函数
bool CFTHttp::Get(LPWSTR szUrl,LPSTR fileName)
{
szFileName=fileName;
bool bRet=false;
wstring szAdditionalHeader=L"";//附加头部
string szFormData="";//表单数据
WCHAR szHost[256];
DWORD dwOpenRequestFlag = 0;
URL_COMPONENTS urlComp;
bool fRet = false; // Initialize URL_COMPONENTS structure.
ZeroMemory(&urlComp, sizeof(urlComp));
urlComp.dwStructSize = sizeof(urlComp); // Use allocated buffer to store the Host Name.
urlComp.lpszHostName        = szHost;
urlComp.dwHostNameLength    = sizeof(szHost) / sizeof(szHost[0]); // Set non-zero lengths to obtain pointer a to the URL Path.
// NOTE: If we threat this pointer as a null-terminated string,
//       it gives us access to additional information as well. 
urlComp.dwUrlPathLength = -1; // Crack HTTP scheme.
urlComp.dwSchemeLength = -1; // Set the szMemo string.
// Crack the URL.
if (!WinHttpCrackUrl(szUrl, 0, 0, &urlComp))
{
sStatus.szInfo=L"WinHttpCrackUrl分析URL失败.网址可能不正确";
goto cleanup;
}
hConnect = WinHttpConnect(hSession, szHost, 
urlComp.nPort, 0);
if (NULL == hSession)
{
goto cleanup;
}
// Prepare OpenRequest flag
if (sReqHeader.szVerb==L"POST")
{
szAdditionalHeader.append(L"Content-Type: application/x-www-form-urlencoded\r\n");
}
dwOpenRequestFlag = (INTERNET_SCHEME_HTTPS == urlComp.nScheme) ? WINHTTP_FLAG_SECURE : 0;
hRequest=WinHttpOpenRequest(hConnect, 
sReqHeader.szVerb.c_str(), urlComp.lpszUrlPath,
NULL, WINHTTP_NO_REFERER, 
WINHTTP_DEFAULT_ACCEPT_TYPES,
dwOpenRequestFlag); if (0==hRequest)
{
sStatus.szInfo=L"WinHttpOpenRequest打开网址失败!";
goto cleanup;
}
// Install the status callback function.
WINHTTP_STATUS_CALLBACK pCallback = WinHttpSetStatusCallback(hRequest,
(WINHTTP_STATUS_CALLBACK)AsyncCallback,
WINHTTP_CALLBACK_FLAG_ALL_COMPLETIONS | 
WINHTTP_CALLBACK_FLAG_REDIRECT,    
NULL); // note: On success WinHttpSetStatusCallback returns the previously defined callback function.
// Here it should be NULL
if (pCallback != NULL)
{
goto cleanup;
} //prepare additional header

if (sReqHeader.cCookies!=NULL)
{
szAdditionalHeader.append(L"Cookie:");
szAdditionalHeader.append(sReqHeader.cCookies->CookiesStr);
szAdditionalHeader.append(L"\r\n");
}
if (sReqHeader.szReferer!=L"")
{
szAdditionalHeader.append(L"Referer:");
szAdditionalHeader.append(sReqHeader.szReferer);
szAdditionalHeader.append(L"\r\n");
} szFormData.append("xxx=ddd\r\n");  const char *dd=szFormData.c_str();//"xx=ddd你好"; /* const char *d2=new char[7];
 CopyMemory((void *)d2,(void *)dd,7);*/
  //const wchar_t *dd=szFormData.c_str();
  //dd=szFormData.c_str();
// Send the request.
if (!WinHttpSendRequest(hRequest, 
szAdditionalHeader.c_str(),-1L, 
(void *)dd, 11,11, 
(DWORD_PTR)this))
{
sStatus.szInfo=L"WinHttpSendRequest网址失败!";
goto cleanup;
}
bRet=true;cleanup:
if (false==bRet)
{
Free();
}
return bRet;
}C#里边
   protected override void Render(HtmlTextWriter writer)
    {
      //  Response.ContentEncoding = System.Text.Encoding.UTF8;
        
        string reqHeader;
        reqHeader = Request.Headers.ToString();
        Response.Write("request type\r\n" + Request.RequestType+"\r\n");
        Response.Write("header is :\r\n"+reqHeader+"\r\n");
        Response.Write("type is \r\n" + System.Text.Encoding.Default+ "\r\n");
       // Response.Write(Request.Cookies[0].Name + "--" + Request.Cookies[0].Value+"\r\n|");
       // Response.Write(Request.Cookies[1].Name + "--" + Request.Cookies[1].Value + "\r\n|");
      //  Response.Write("come from :" + Request.UrlReferrer + "\r\n");
        Response.Write("form data count is:" + Request.Form.Count.ToString() + "\r\n");
        Response.Write("form data count is:" + Request.Form.Keys[0] + "\r\n");
    }

Answer 4

晚上开始就这问题.还没解决.太郁闷了.要不是操作频繁.我就copymemery算了...哎.

Answer 5

有没兴趣加我QQ5 777 63871远程帮我一把?我急用啊.我用的vs2010