怎样用evc获取网页内容

[xjgycc]

怎样用evc获取网页内容

[liaojz]

我以前写的一个方法：

// 发起Http请求
BOOL HttpRequest (const LPTSTR lpszServer,TCHAR * Buffer)
{
BOOL bReturn = FALSE;
HINTERNET hOpen = NULL, hConnect = NULL, hRequest = NULL;
DWORD dwSize = 0, dwFlags = INTERNET_FLAG_RELOAD | INTERNET_FLAG_NO_CACHE_WRITE;
TCHAR szErrMsg[200];
char *lpBufferA,*lpHeadersA;
TCHAR *lpBufferW, *lpHeadersW;
LPTSTR AcceptTypes[2] = {TEXT("*/*"), NULL};

// 打开一个Http连接
hOpen = InternetOpen (TEXT("CeHttp"), INTERNET_OPEN_TYPE_PRECONFIG, NULL, 0, 0);

if (!hOpen)
{
return FALSE;
}

// 请求指定的URL
if (!(hRequest = InternetOpenUrl (hOpen, lpszServer, NULL, 0,INTERNET_FLAG_RELOAD, 0)))
{
wsprintf (szErrMsg, TEXT("%s: %x"), TEXT("InternetOpenUrl Error"),GetLastError());
goto exit;
}

HttpQueryInfoA(hRequest, HTTP_QUERY_RAW_HEADERS_CRLF, NULL, &dwSize,NULL);

lpHeadersA = new CHAR [dwSize];
if(!lpHeadersA)
{
delete[] lpHeadersA;
lpHeadersA = NULL;
goto exit;
}
if (!HttpQueryInfoA(hRequest,HTTP_QUERY_RAW_HEADERS_CRLF,(LPVOID) lpHeadersA, &dwSize, NULL))
{
goto exit;
}


lpHeadersA [dwSize] = '\0';

dwSize = MultiByteToWideChar (CP_ACP, 0, lpHeadersA, -1, NULL, 0);

lpHeadersW = new TCHAR [dwSize];
if(!lpHeadersW)
{
delete[] lpHeadersW;
lpHeadersW = NULL;
goto exit;
}

MultiByteToWideChar (CP_ACP, 0, lpHeadersA, -1, lpHeadersW, dwSize);

delete[] lpHeadersA;
lpHeadersA = NULL;
delete[] lpHeadersW;
lpHeadersW = NULL;

lpBufferA = new CHAR [4096];
if(!lpBufferA)
{
delete[] lpBufferA;
lpBufferA = NULL;
goto exit;
}

do
{
// 获取内容
if (!InternetReadFile (hRequest, lpBufferA, 4096, &dwSize))
{
goto exit;
}

if (dwSize != 0)
{
lpBufferA [dwSize] = '\0';

dwSize = MultiByteToWideChar (CP_ACP, 0, lpBufferA, -1, NULL, 0);

lpBufferW = new TCHAR [dwSize];
if(!lpBufferW)
{
delete[] lpBufferW;
lpBufferW = NULL;
goto exit;
}

MultiByteToWideChar (CP_ACP, 0, lpBufferA, -1, lpBufferW, dwSize);

wsprintf(Buffer,L"%s",lpBufferW);

delete[] lpBufferW;
lpBufferW = NULL;
}
} while (dwSize);

delete[] lpBufferA;
lpBufferA = NULL;

bReturn = TRUE;


exit:
if (hOpen)
{
if (!InternetCloseHandle (hOpen))
wsprintf (szErrMsg, TEXT("%s: %x"), TEXT("CloseHandle Error"),GetLastError());
}

if (hConnect)
{
if (!InternetCloseHandle (hConnect))
wsprintf (szErrMsg, TEXT("%s: %x"), TEXT("CloseHandle Error"),GetLastError());
}

if (hRequest)
{
if (!InternetCloseHandle (hRequest))
wsprintf (szErrMsg, TEXT("%s: %x"), TEXT("CloseHandle Error"),GetLastError());
}

return bReturn;
}

[xhcumt]

顶

[xjgycc]

问题已解决

[xhcumt]

可是用上面的方法下载的数据打不开。不知道哪里有错误。请各位朋友再帮忙看一下。