C++中发送HTTP请求把数据上传_C/C++_编程开发_程序员俱乐部

下面的代码是C++中发送HTTP请求代码:
  1、PostConnect(CString url,const CString &strPara,CString &strContent, CString &strDescript)发送Http请求.url:要请求的地址,
strPara请求的参数.strContent 服务器返回的信息.strDescript程序执行信息.
  2、可能请求中的参数有存在中文字符的关系，可能会存在乱码，所以附带了2个转码的方法。
下面贴出代码：
PostConn.h

class="C++">
#pragma once
#include "afxinet.h"

class CPostConn
{
public:
	CPostConn();
	~CPostConn();

public:
	bool PostConnect(CString url,const CString &strPara,CString &strContent, CString &strDescript);
	void GBKToUTF8(CString &strGBK);
	void UTF8ToGBK(CString &str);
};

PostConn.cpp

#include "stdafx.h"
#include "PostConn.h"

CPostConn::CPostConn()
{

}

CPostConn::~CPostConn()
{

}

bool CPostConn::PostConnect(CString url,const CString &strPara,CString &strContent, CString &strDescript)
{
	try
	{
		strDescript="提交成功完成";
		bool bRet=false;
		CString strServer, strObject, strHeader, strRet;  
		unsigned short nPort;
		DWORD dwServiceType; 
		if(!AfxParseURL(url,dwServiceType,strServer,strObject,nPort))
		{
			strDescript="不是有效的网络地址";
			return false;
		}

		CInternetSession sess;

		CHttpFile *pFile;

		CHttpConnection *pServer=sess.GetHttpConnection(strServer,nPort);

		if(pServer==NULL)
		{
			strDescript = "对不起，连接服务器失败！";  
			return false;

		}

		pFile=pServer->OpenRequest(CHttpConnection::HTTP_VERB_POST,strObject,NULL,1,
									NULL,NULL,INTERNET_FLAG_EXISTING_CONNECT);
		if(pFile == NULL)  
		{  
			strDescript = "找不到网络地址" + url;  
			 return false;  
		}  

		CString strHeaders = _T("Content-Type: application/x-www-form-urlencoded");
		pFile->AddRequestHeaders(strHeaders);
		pFile->AddRequestHeaders("Accept: */*");
		pFile ->SendRequest(NULL,0,(LPTSTR)(LPCTSTR)strPara, strPara.GetLength());

		CString strSentence;
		DWORD dwStatus;
		DWORD dwBuffLen = sizeof(dwStatus);
		BOOL bSuccess = pFile->QueryInfo(
			HTTP_QUERY_STATUS_CODE|HTTP_QUERY_FLAG_NUMBER,
			&dwStatus, &dwBuffLen);

		if( bSuccess && dwStatus>=  200 && dwStatus<300)
		{
			char buffer[256];
			memset(buffer, 0, 256);
			int nReadCount = 0;
			while((nReadCount = pFile->Read(buffer, 2048)) > 0)
			{
				strContent += buffer;
				memset(buffer, 0, 256);
			}
			bRet = true;
		}
		else
		{
			strDescript = "网站服务器错误" + url;
			bRet = false;
		}
		////////////////////////////////////////
		pFile->Close();
		sess.Close();
		return bRet;

	}
	catch (...)
	{
		int nCode = GetLastError();
		strDescript.Format("向服务器post失败！错误号：%d", nCode);
		return false;
	}
}


void CPostConn::GBKToUTF8(CString &strGBK)
{
	WCHAR * str1;
	int n = MultiByteToWideChar(CP_ACP, 0, strGBK, -1, NULL, 0);
	str1 = new WCHAR[n];
	MultiByteToWideChar(CP_ACP, 0, strGBK, -1, str1, n);
	n = WideCharToMultiByte(CP_UTF8, 0, str1, -1, NULL, 0, NULL, NULL);
	char * str2 = new char[n];
	WideCharToMultiByte(CP_UTF8, 0, str1, -1, str2, n, NULL, NULL);
	strGBK = str2;
	delete[]str1;
	str1 = NULL;
	delete[]str2;
	str2 = NULL;
}

void CPostConn::UTF8ToGBK(CString &str)
{
	WCHAR* strSrc;
	TCHAR* szRes;
	int i=MultiByteToWideChar(CP_UTF8,0,str,-1,NULL,0);
	strSrc=new WCHAR[i=1];
	MultiByteToWideChar(CP_UTF8,0,str,-1,strSrc,i);
	i=WideCharToMultiByte(CP_ACP,0,strSrc,-1,NULL,0,NULL,NULL);
	szRes=new TCHAR[i];
	WideCharToMultiByte(CP_ACP,0,strSrc,-1,szRes,i,NULL,NULL);
	str=szRes;
	delete []strSrc;
	delete []szRes;
}

记录下来,方便以后.