关于用C++实现下载的问题

[yeching]

如果已知有一个资源地址，如何用C++实现对其下载？

[baihacker]

//VC6的代码

#include <Winsock2.h>
#include <stdio.h>
#include<fstream.h>
#pragma comment( lib , "ws2_32.lib")
void main()
{
	WORD wVersionRequested;
	WSADATA wsaData;
	int err;
	wVersionRequested = MAKEWORD( 1, 1 );
	
	err = WSAStartup( wVersionRequested, &wsaData );
	if ( err != 0 )
	{
		return;
	}
	if ( LOBYTE( wsaData.wVersion ) != 1 ||
		HIBYTE( wsaData.wVersion ) != 1 ) 
	{
		WSACleanup( );
		return; 
	}
	
	SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0);
	SOCKADDR_IN addrSrv;
	
	
	
	hostent* remoteHost;
	char* host_name="www.baidu.com";
	unsigned int addr;
	if (isalpha(host_name[0])) 
	{   /* host address is a name */
		if (host_name[strlen(host_name)-1] == '\n') 
			host_name[strlen(host_name)-1] = '\0'; 
		remoteHost = gethostbyname(host_name);
	}
	else  
	{ 
		addr = inet_addr(host_name);
		remoteHost = gethostbyaddr((char *)&addr, 4, AF_INET);
	}
	
	memcpy(&addrSrv.sin_addr.S_un.S_addr,remoteHost->h_addr,remoteHost->h_length);
	if (WSAGetLastError() != 0) 
	{
		if (WSAGetLastError() == 11001)
			printf("Host not found...\nExiting.\n");
	}
	else
		printf("error#:%ld\n", WSAGetLastError());
	
	addrSrv.sin_family=AF_INET;
	addrSrv.sin_port=htons(80);
	connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));
	char recvBuf[1024*200+1]={0};
	
	
	
	
	/////////////////////////////////////////////////////////////////////////////////////////
	
	
	
	
	
	char sendBuff[200]="GET http://www.baidu.com/s?wd=男人&cl=3 HTTP/1.0\r\nHost:www.baidu.com\r\n\r\n";
	send(sockClient,sendBuff,strlen(sendBuff),0);
	
	ofstream outfile("baidu.txt",ios::out);
	int cc;
	cc=recv(sockClient,recvBuf,1024*200,0);
	while(cc!=SOCKET_ERROR&&cc>0)
	{
		outfile<<recvBuf;
		cc=recv(sockClient,recvBuf,1024*200,0);
	}
	
	outfile.close();
	closesocket(sockClient);
	WSACleanup();
	
	
}

[帅得不敢出门]

飞雪好快.

#include <stdio.h>  
 #include <afxinet.h>  

int main(int argc, char* argv[])  
 {  
    CInternetSession session("HttpClient");  
   char * url = " http://www.imobile.com.cn/simcard.php?simcard=1392658";  
  CHttpFile* pfile = (CHttpFile *)session.OpenURL(url);  
     
   DWORD dwStatusCode;  
 pfile -> QueryInfoStatusCode(dwStatusCode);  
     if(dwStatusCode == HTTP_STATUS_OK)  
 {  
     CString content;  
     CString data;  
      while (pfile -> ReadString(data))  
     {  
         content  += data + "\r\n";  
      }  
       content.TrimRight();  
       printf(" %s\n " ,(LPCTSTR)content);  
    }   
   pfile -> Close();  
    delete pfile;  
    session.Close();  
    
    return   0 ;  
} 

[yeching]

都是强人，多谢二位大虾的帮助啊！

[jump_1990]

貌似不是很懂，拿回去慢慢试试，谢谢二位的代码！