VC 通过HTTP调用webservice请求数据

[lijianli9]

CHttpFile *pFile = m_pHttp->OpenRequest(CHttpConnection::HTTP_VERB_POST,
"/HelloWorldService/services/HelloWorld.asmx", NULL, 0, NULL, NULL, m_dwHttpRequestFlags);
pFile->AddRequestHeaders("Content-Type: text/xml; charset=utf-8", HTTP_ADDREQ_FLAG_ADD);
pFile->AddRequestHeaders("SOAPAction: \"http://tempuri.org/exampleMessage\"", HTTP_ADDREQ_FLAG_ADD);

strData += "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
strData += "\r\n<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">";
strData += "\r\n\t<soap:Body>";
strData += "\r\n\t\t<exampleMessage xmlns=\"http://tempuri.org/\">";
strData += "\r\n\t\t\t";
strData += SetXmlSection("in0", "hello", szXmlData);
strData += "\r\n\t\t";
strData += "</exampleMessage>";
strData += "\r\n\t</soap:Body>";
strData += "\r\n</soap:Envelope>";
webservice是我用java在tomcat上写的一个exampleMessage接口，但是调用的时候没有放回自己要的数据？请教高手如何解决这个问题？
java的webservice接口是http://localhost:8080/HelloWorldService/services/HelloWorld.asmx，里面有一个接口是exampleMessage 接受一个string参数。

[zyyoung]

struct __FCAutoInitializeCOM
{
	__FCAutoInitializeCOM()  {CoInitialize(0);}
	~__FCAutoInitializeCOM() {CoUninitialize();}
};

// encapsuled download thread.
DWORD JetWebService::httpGet(CString url,char *ret)
{
	__FCAutoInitializeCOM      _aAutoCOM ;

	char   * pBuf = NULL ;
	int    nBufLen = 0 ;
	TRY
	{
		// connection
		CInternetSession   sess ;
		sess.SetOption (INTERNET_OPTION_CONNECT_TIMEOUT, 30 * 1000) ;
		sess.SetOption (INTERNET_OPTION_CONNECT_BACKOFF, 1000) ;
		sess.SetOption (INTERNET_OPTION_CONNECT_RETRIES, 1) ;

		DWORD       dwFlag = INTERNET_FLAG_TRANSFER_BINARY|INTERNET_FLAG_DONT_CACHE|INTERNET_FLAG_RELOAD ;
		CHttpFile   * pF = (CHttpFile*)sess.OpenURL(url, 1, dwFlag); ASSERT(pF);
		if (!pF)
		{AfxThrowInternetException(1);}

		// connection status
		CString      str ;
		pF->QueryInfo (HTTP_QUERY_STATUS_CODE, str) ;

		// Proxy Authentication Required
		if (str == _T("407"))
		{
			CString   strUsername, strPassword ;
			pF->SetOption (INTERNET_OPTION_PROXY_USERNAME, (VOID*)(LPCTSTR)strUsername, strUsername.GetLength()) ;
			pF->SetOption (INTERNET_OPTION_PROXY_PASSWORD, (VOID*)(LPCTSTR)strPassword, strPassword.GetLength()) ;
			pF->SendRequest (NULL);
		}

		pF->QueryInfo (HTTP_QUERY_STATUS_CODE, str) ;
		if (str != _T("200"))
		{
			pF->Close() ;
			delete pF ;
			AfxThrowInternetException(1);
		}

		// confirm update
		pF->QueryInfo (HTTP_QUERY_LAST_MODIFIED, str) ;

		// start download
		pF->QueryInfo (HTTP_QUERY_CONTENT_LENGTH, str) ; // file's length

		if (_ttoi(str))
		{
			// know file's size
			int     nLen = (nBufLen = _ttoi(str)) ;
			char    * p = (pBuf = new char[nLen+8]) ;
			ZeroMemory (p, nLen+8) ;

			// download 8K every
			int   n = pF->Read (p, (nLen < 8192) ? nLen : 8192) ;
			p += n ; nLen -= n ;

			// interrupted
			if (nLen != 0)
			{
				delete[] pBuf; pBuf=NULL;
				nBufLen = 0 ;
			}
		}

		pF->Close() ;
		delete pF ;
	}
	CATCH_ALL(e) {}
	END_CATCH_ALL
	if (pBuf)
	{
		memcpy(ret,pBuf,strlen(pBuf));
		delete[] pBuf ;
	}
	return 0 ;
}

[lijianli9]

你这样是请求url页面数据的吧，和我的需求不一致哦，

[贪玩的老鼠]

你没有调用SendRequest发送你的strData
AddRequestHeaders
SendRequest
EndRequest
调用
QueryInfoStatusCode
判断是否正常返回
调用QueryInfo获取返回结果

[lijianli9]

senddata肯定要发的，

[zyyoung]

没试过怎么知道