C++发送HTTP请求---亲测可行(转)

环境:xp sp3,vs2008,在静态库中使用 MFC​

1. 1. 1. 
         
   2. #include <afxwin.h>  
   3. #include <stdio.h>  
   4. #include <windows.h>  
   5. #include <string>  
   6. #include "Wininet.h"  
   7. #pragma comment(lib,"Wininet.lib")  
   8. 
      
   9. //模拟浏览器发送HTTP请求函数  
   10. std::string HttpRequest(char * lpHostName,short sPort,char * lpUrl,char * lpMethod,char * lpPostData,int nPostDataLen)  
   11. {  
   12.     HINTERNET hInternet,hConnect,hRequest;  
   13. 
       
   14.     BOOL bRet;  
   15. 
       
   16.     std::string strResponse;  
   17. 
       
   18.     hInternet = (HINSTANCE)InternetOpen("User-Agent",INTERNET_OPEN_TYPE_PRECONFIG,NULL,NULL,0);  
   19.     if(!hInternet)  
   20.         goto Ret0;  
   21. 
       
   22.     hConnect = (HINSTANCE)InternetConnect(hInternet,lpHostName,sPort,NULL,"HTTP/1.1",INTERNET_SERVICE_HTTP,0,0);  
   23.     if(!hConnect)  
   24.         goto Ret0;  
   25. 
       
   26.     hRequest = (HINSTANCE)HttpOpenRequest(hConnect,lpMethod,lpUrl,"HTTP/1.1",NULL,NULL,INTERNET_FLAG_RELOAD,0);  
   27.     if(!hRequest)  
   28.         goto Ret0;  
   29. 
       
   30.     //bRet = HttpAddRequestHeaders(hRequest,"Content-Type: application/x-www-form-urlencoded",Len(FORMHEADERS),HTTP_ADDREQ_FLAG_REPLACE | HTTP_ADDREQ_FLAG_ADD);  
   31.     //if(!bRet)  
   32.         //goto Ret0;  
   33. 
       
   34.     bRet = HttpSendRequest(hRequest,NULL,0,lpPostData,nPostDataLen);  
   35.     while(TRUE)  
   36.     {  
   37.         char cReadBuffer[4096];  
   38.         unsigned long lNumberOfBytesRead;  
   39.         bRet = InternetReadFile(hRequest,cReadBuffer,sizeof(cReadBuffer) - 1,&lNumberOfBytesRead);  
   40.         if(!bRet || !lNumberOfBytesRead)  
   41.             break;  
   42.         cReadBuffer[lNumberOfBytesRead] = 0;  
   43.         strResponse = strResponse + cReadBuffer;  
   44.     }  
   45. 
       
   46.  Ret0:  
   47.     if(hRequest)  
   48.         InternetCloseHandle(hRequest);  
   49.     if(hConnect)  
   50.         InternetCloseHandle(hConnect);  
   51.     if(hInternet)  
   52.         InternetCloseHandle(hInternet);  
   53. 
       
   54.     return strResponse;  
   55. }  
   56. 
       
   57. void main()   
   58. {   
   59.     //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"));  
   60.     std::string strResponse = HttpRequest("www.hao123.com",80,NULL,"GET",NULL,0);  
   61.     FILE * fp = fopen("C:\\123.htm","wb");  
   62.     fwrite(strResponse.c_str(),strResponse.length(),1,fp);  
   63.     fclose(fp);  
   64. }