vchttp上传文件

‘壹’ 怎么用VC实现基于HTTP的上传文件

CHttpFile
CHttpConnection
CInternetSession

MFC中使用这个几个类来实现HTTP协议的数据传输。
具体使用方法看MSDN吧，网上搜索也能搜到例子，我就不贴代码了。

‘贰’ 如何用VC发送http请求

1、创建socket，利用tcp链接服务器。
2、按照http协议的格式组装请求字符串。
3、利用socket发送字符串。

‘叁’ vc++ 实现http 哪种方案最好

各有特点。以下是两个文件：HttpClient.h HttpClient.cpp 一个类
（错误检测部分没有加入）
使用方法
1：get方式
CHttpClient conn;
CString value="http://8crystal.com/test.asp";
value=conn.doGet(value);

2：post方式
CHttpClient conn;
CString value="http://8crystal.com/test.asp";
conn.addParam("name1","value1");
conn.addParam("name2","value2");
conn.addParam("name3","value3");
conn.addParam("name4","value4");
conn.addParam("name5","value5");
conn.addParam("name6","value6");
value=conn.doPost(value);

// HttpClient.h: interface for the CHttpClient class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_HTTPCLIENT_H__EA769DCB_AAB9_47CD_BD87_FBD6913592C5__INCLUDED_)
#define AFX_HTTPCLIENT_H__EA769DCB_AAB9_47CD_BD87_FBD6913592C5__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include "wininet.h"
#include "afxinet.h"
class CHttpClient
{
public:
void addParam(CString name,CString value);
CString doPost(CString href);
CString doGet(CString href);
CHttpClient();
virtual ~CHttpClient();

private:
CString CONTENT;
int CL;
CStringList values;
CStringList names;
};

#endif // !defined(AFX_HTTPCLIENT_H__EA769DCB_AAB9_47CD_BD87_FBD6913592C5__INCLUDED_)

++++++++++++++++++++++++++++++++++++++

// HttpClient.cpp: implementation of the CHttpClient class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "emailsenderv2.h"
#include "HttpClient.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CHttpClient::CHttpClient()
{

}

CHttpClient::~CHttpClient()
{

}

CString CHttpClient::doGet(CString href)
{
CString httpsource="";
CInternetSession session1(NULL,0);
CHttpFile* pHTTPFile=NULL;
try{
pHTTPFile=(CHttpFile*)session1.OpenURL(href);
//session1.
}catch(CInternetException){
pHTTPFile=NULL;
}
if(pHTTPFile)
{
CString text;
for(int i=0;pHTTPFile->ReadString(text);i++)
{
httpsource=httpsource+text+"rn";
}
pHTTPFile->Close();
delete pHTTPFile;
}else
{

}
return httpsource;
}

CString CHttpClient::doPost(CString href)
{
CString httpsource="";
CInternetSession session1;
CHttpConnection* conn1=NULL;
CHttpFile* pFile = NULL;
CString strServerName;
CString strObject;
INTERNET_PORT nPort;
DWORD dwServiceType;
AfxParseURL((LPCTSTR)href,dwServiceType, strServerName, strObject, nPort);
DWORD retcode;
char* outBuff = CONTENT.GetBuffer(1000);
try
{
conn1 = session1.GetHttpConnection(strServerName,nPort);
pFile = conn1->OpenRequest(0,strObject,NULL,1,NULL,"HTTP/1.1",INTERNET_FLAG_EXISTING_CONNECT|INTERNET_FLAG_NO_AUTO_REDIRECT);
pFile -> AddRequestHeaders("Content-Type: application/x-www-form-urlencoded");
pFile -> AddRequestHeaders("Accept: */*");
pFile -> SendRequest(NULL,0,outBuff,strlen(outBuff)+1);
pFile -> QueryInfoStatusCode(retcode);
}
catch (CInternetException * e){};
if(pFile)
{
CString text;
for(int i=0;pFile->ReadString(text);i++)
{
httpsource=httpsource+text+"rn";
}
pFile->Close();
}else
{

}
return httpsource;
delete pFile;
delete conn1;
session1.Close();
}

void CHttpClient::addParam(CString name, CString value)
{
names.AddTail((LPCTSTR)name);
values.AddTail((LPCTSTR)value);
CString eq="=";
CString an="&";
CONTENT=CONTENT+name+eq+value+an;
CL=CONTENT.GetLength();
}

‘肆’ 怎么HTTP上传

如何用http上传一个文件

VC里面怎么用http上传一个文件呢？下载文件有这样一个函数
HRESULT URLDownloadToCacheFile(
LPUNKNOWN lpUnkcaller,
LPCSTR szURL,
LPTSTR szFileName,
DWORD dwBufLength,
DWORD dwReserved,
IBindStatusCallback *pBSC
);
可以提供回调，显示进度，有没有与这个函数相对应的上传文件的函数呢？或者还有其他的用起来比较方便的函数呢?不想用socket实现http，那样太麻烦了，我的工程很小的，如果用socket实现http的话会得不偿失的