Post表单提交 别人写的 收藏了 （作者 ：csdn smycxp ）

VOID GenericHTTPClient::ConvertUtf8ToGBK(CString& strUtf8)
{
int len=MultiByteToWideChar(CP_UTF8, 0, (LPCTSTR)strUtf8, -1, NULL,0);
unsigned short * wszGBK = new unsigned short[len+1];
memset(wszGBK, 0, len * 2 + 2);
MultiByteToWideChar(CP_UTF8, 0, (LPCTSTR)strUtf8, -1, wszGBK, len);

len = WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, NULL, 0, NULL, NULL);
char *szGBK=new char[len + 1];
memset(szGBK, 0, len + 1);
WideCharToMultiByte (CP_ACP, 0, wszGBK, -1, szGBK, len, NULL,NULL);

strUtf8 = szGBK;
delete[] szGBK;
delete[] wszGBK;
}

VOID GenericHTTPClient::ConvertGBKToUtf8(CString& strGBK)
{
int len=MultiByteToWideChar(CP_ACP, 0, (LPCTSTR)strGBK, -1, NULL,0);
unsigned short * wszUtf8 = new unsigned short[len+1];
memset(wszUtf8, 0, len * 2 + 2);
MultiByteToWideChar(CP_ACP, 0, (LPCTSTR)strGBK, -1, wszUtf8, len);

len = WideCharToMultiByte(CP_UTF8, 0, wszUtf8, -1, NULL, 0, NULL, NULL);
char *szUtf8=new char[len + 1];
memset(szUtf8, 0, len + 1);
WideCharToMultiByte (CP_UTF8, 0, wszUtf8, -1, szUtf8, len, NULL,NULL);

strGBK = szUtf8;
delete[] szUtf8;
delete[] wszUtf8;
}

VOID GenericHTTPClient::UrlEncode(CString& szData)
{
CString str(szData);
CString strRes;
int nLen=str.GetLength();
for (int i=0;i<nLen;i++)
{
TCHAR c=str.GetAt(i);
if(c=='+')    strRes+=_T("%2B");
else if(c==' ')    strRes+=_T("+");
else if(c=='%')    strRes+=_T("%25");
else if(c=='=')    strRes+=_T("%3D");
else if(c=='&')    strRes+=_T("%26");
else if(c<33 || c>127)
{
TCHAR tmp=0;
strRes+="%";
tmp=((c>>4)&0x0F)+'0';
if(tmp>'9') tmp+=7u;
strRes+=tmp;
tmp = (c&0x0F)+'0';
if(tmp>'9') tmp += 7u;
strRes+=tmp;
}
else    strRes+=c;
}
szData=strRes;
}

VOID GenericHTTPClient::PostEncode(CString& szData)
{
ConvertGBKToUtf8(szData);    //转为UTF-8
UrlEncode(szData);    //URL编码
}

//如何使用，请看下面代码
void CHttpRequestDlg::OnPost()
{
GenericHTTPClient httpClient;
httpClient.AddHeader("Accept-Language: zh-cn/r/n");
httpClient.AddHeader("Accept-Encoding: gzip, deflate/r/n");
httpClient.AddHeader("x-flash-version: 10,0,32,18/r/n");
httpClient.AddHeader("Cache-Control: no-cache/r/n");
httpClient.AddPostArguments("name","cxp");
httpClient.AddPostArguments("age","25");
CString sex="男,123abc~!@#$%^&*()_+|:///"<>?中国人";
httpClient.PostEncode(sex);
httpClient.AddPostArguments("sex",sex);

if(httpClient.Request("http://localhost:3498/WebTest/PostInfo.aspx",GenericHTTPClient::RequestPostMethod))
{
LPCTSTR szHtml;
szHtml=httpClient.QueryHTTPResponse();
CString str(szHtml);
httpClient.ConvertUtf8ToGBK(str);
AfxMessageBox(str);
}
}