C++发送HTTP请求---亲测可行(转)

转自：http://hi.baidu.com/benbearlove/item/1671c23017575825b3c0c53f

环境:xp sp3,vs2008,在静态库中使用 MFC

1. #include <afxwin.h>  
2. #include <stdio.h>  
3. #include <windows.h>  
4. #include <string>  
5. #include "Wininet.h"  
6. #pragma comment(lib,"Wininet.lib")  
7.   
8. //模拟浏览器发送HTTP请求函数  
9. std::string HttpRequest(char * lpHostName,short sPort,char * lpUrl,char * lpMethod,char * lpPostData,int nPostDataLen)  
10. {  
11.     HINTERNET hInternet,hConnect,hRequest;  
12.   
13.     BOOL bRet;  
14.   
15.     std::string strResponse;  
16.   
17.     hInternet = (HINSTANCE)InternetOpen("User-Agent",INTERNET_OPEN_TYPE_PRECONFIG,NULL,NULL,0);  
18.     if(!hInternet)  
19.         goto Ret0;  
20.   
21.     hConnect = (HINSTANCE)InternetConnect(hInternet,lpHostName,sPort,NULL,"HTTP/1.1",INTERNET_SERVICE_HTTP,0,0);  
22.     if(!hConnect)  
23.         goto Ret0;  
24.   
25.     hRequest = (HINSTANCE)HttpOpenRequest(hConnect,lpMethod,lpUrl,"HTTP/1.1",NULL,NULL,INTERNET_FLAG_RELOAD,0);  
26.     if(!hRequest)  
27.         goto Ret0;  
28.   
29.     //bRet = HttpAddRequestHeaders(hRequest,"Content-Type: application/x-www-form-urlencoded",Len(FORMHEADERS),HTTP_ADDREQ_FLAG_REPLACE | HTTP_ADDREQ_FLAG_ADD);  
30.     //if(!bRet)  
31.         //goto Ret0;  
32.   
33.     bRet = HttpSendRequest(hRequest,NULL,0,lpPostData,nPostDataLen);  
34.     while(TRUE)  
35.     {  
36.         char cReadBuffer[4096];  
37.         unsigned long lNumberOfBytesRead;  
38.         bRet = InternetReadFile(hRequest,cReadBuffer,sizeof(cReadBuffer) - 1,&lNumberOfBytesRead);  
39.         if(!bRet || !lNumberOfBytesRead)  
40.             break;  
41.         cReadBuffer[lNumberOfBytesRead] = 0;  
42.         strResponse = strResponse + cReadBuffer;  
43.     }  
44.   
45.  Ret0:  
46.     if(hRequest)  
47.         InternetCloseHandle(hRequest);  
48.     if(hConnect)  
49.         InternetCloseHandle(hConnect);  
50.     if(hInternet)  
51.         InternetCloseHandle(hInternet);  
52.   
53.     return strResponse;  
54. }  
55.   
56. void main()   
57. {   
58.     //CString strResponse = HttpRequest("translate.google.com",80,"/translate_t?langpair=en|zh-CN","POST","hl=zh-CN&ie=UTF-8&text=this is me&langpair=en|zh-CN",strlen("hl=zh-CN&ie=UTF-8&text=this is me&langpair=en|zh-CN"));  
59.     std::string strResponse = HttpRequest("www.hao123.com",80,NULL,"GET",NULL,0);  
60.     FILE * fp = fopen("C:\\123.htm","wb");  
61.     fwrite(strResponse.c_str(),strResponse.length(),1,fp);  
62.     fclose(fp);  
63. } 

C++发送HTTP请求---亲测可行(转)

原文：http://www.cnblogs.com/mazhenyu/p/6497857.html