pagedown.cpp

linux下实现对mysql数据库的连接及相关的插入、删除和查找工作。

# include<iostream>
# include<fstream>
# include<string>
# include<netdb.h>
# include <netinet/in.h>
# include<arpa/inet.h>
# include"pageDown.h"
# define serverport 80
# include "client.h"

using namespace std;

string GetPageContent(string url)
{
	    string pageContent;
	    string serverURL,position;
 	    string::size_type idx;
 	    idx=url.find("/", 7);
 	    if(idx!=std::string::npos)
		{
 				serverURL=url.substr(7,idx-7);
 				position=url.substr(idx+1);
		}
    	else
		{
 				serverURL=url.substr(7);
		}
		cout<<"url"<<serverURL<<endl;
		string ip=GetServerIP(serverURL);
		string httprequest=HttpGetHead(serverURL,position);
		//int flag=0;
        Client client= Client(ip,serverport);
        int sockID=client.getSockID();
		int length=httprequest.size();
		cout<<length<<"head"<<endl;
		if(client.SendMsg(sockID,httprequest)==true)
		cout<<"send success"<<endl;
		else
			exit(1);
		pageContent=client.RecvMsg(sockID);
		//cout<<pageContent<<endl;
		 //exit(1);

		cout<<pageContent.length()<<"con length"<<endl;
		client.CloseSocket(sockID);
		return pageContent;
		//closesocket(sockID);
     
}
string GetServerIP(string serverURL)
{		
		
        char c=serverURL[serverURL.size()-1];
	    if(47<c && c<58) //数字
				return serverURL;
		else 
		{
				hostent * serverip;
				char *ip;
				serverip=gethostbyname(serverURL.c_str());
				if(serverip->h_addr_list[0])
				{
						in_addr addr;
						memmove(&addr,serverip->h_addr_list[0],4);
						ip=inet_ntoa(addr);
						string sip(ip);
						return sip;
				}
		        else 
						return "";
	}

}
string HttpGetHead(string server,string position)
{		
		string httprequest;
        httprequest+="GET /";
        httprequest+=position;
        httprequest+=" HTTP/1.1\r\n";
        httprequest+="Host:";
        httprequest+=server;
        httprequest+="\r\n";
        httprequest+="Accept:*/*\r\n";
        httprequest+="User-Agent:Mozilla/4.0 (compatible; MSIE 6.00; Windows XP)\r\n";
        httprequest+="Connection:Keep-Alive\r\n";
        httprequest+="\r\n";
		return httprequest;

}