1 // WinHttpTest.cpp : 定义控制台应用程序的入口点。  2 //  3 //#include <stdafx.h>  4 #include <vector>  5 #include <winsock2.h>  6 #include <Winhttp.h>  7 //#include <urlmon.h>  8 #include <windows.h>  9 #include <iostream> 10 #include <fstream> 11 #include <string> 12 #include "AtlBase.h" 13 #include "AtlConv.h" 14 using namespace std; 15 #pragma comment(lib, "winhttp")//这一句不能省略 16 string GetHost(string strUrl) 17 { 18    int indexHttp = strUrl.find("http://"); 19    if(indexHttp != -1) 20    { 21        strUrl = strUrl.substr(7); 22    } 23    else 24        return ""; 25    int indexSlash = strUrl.find("/"); 26    if(indexSlash != -1) 27    { 28        return strUrl.substr(0, indexSlash); 29    } 30    else 31        return strUrl; 32    return ""; 33 } 34 string GetRequestStr(string strUrl) 35 { 36    int indexHttp = strUrl.find("http://"); 37    if(indexHttp != -1) 38    { 39        strUrl = strUrl.substr(7); 40    } 41    else 42        return ""; 43    int indexSlash = strUrl.find("/"); 44    if(indexSlash == -1) 45    { 46        return ""; 47    } 48    else 49        return strUrl.substr(indexSlash); 50 } 51 string GetHtml(string strUrl) 52 { 53    string strHost = GetHost(strUrl);//获取Host 54    string strRequestStr = GetRequestStr(strUrl);//获取请求路径 55    USES_CONVERSION; 56     //2014年7月9日10:02:29 57     //LPCWSTR的定义 typedef const wchar_t* LPCWSTR; 58     //LPSTR的定义   typedef char* LPCWSTR; 59     //LPWSTR的定义  typedef wchar_t* LPWSTR; 60    LPCWSTR host = A2CW(strHost.c_str());//string转换为常量指针类型 61    LPCWSTR requestStr = A2CW(strRequestStr.c_str()); 62    //Variables 63    DWORD dwSize = 0; 64    DWORD dwDownloaded = 0; 65    LPSTR pszOutBuffer; 66    vector <string>  vFileContent; 67    BOOL  bResults = FALSE; 68     69    //Note the definition of HINTERNET 70    HINTERNET  hSession = NULL, 71        hConnect = NULL, 72        hRequest = NULL; 73        string strHtml = "";// store the html code 74        string str;//temporary variables 75        ofstream out("test.html",ios::binary);//output the html code to a html text; 76    //2014年7月9日10:39:33 77    //Search the WinHttp API 78    //what to do when call the function WinHttpOpen？ 79    // Use WinHttpOpen to obtain a session handle. 80    hSession = WinHttpOpen(L"WinHTTP Example/1.0", 81        WINHTTP_ACCESS_TYPE_DEFAULT_PROXY, 82        WINHTTP_NO_PROXY_NAME, 83        WINHTTP_NO_PROXY_BYPASS, 0); 84  // Specify an HTTP server. 85    if (hSession) 86        hConnect = WinHttpConnect(hSession, host, 87        INTERNET_DEFAULT_HTTP_PORT, 0); 88  // Create an HTTP request handle. 89    if (hConnect) 90        hRequest = WinHttpOpenRequest(hConnect, L"GET", requestStr, 91        NULL, WINHTTP_NO_REFERER, 92        NULL, 93        NULL); 94  // Send a request. 95    if (hRequest) 96        bResults = WinHttpSendRequest(hRequest, 97        WINHTTP_NO_ADDITIONAL_HEADERS, 98        0, WINHTTP_NO_REQUEST_DATA, 0, 99        0, 0);100 // End the request.101    if (bResults)102        bResults = WinHttpReceiveResponse(hRequest, NULL);103 104 //obtain the html source code       105    if (bResults)106        do107        {108          // Check for available data.109            dwSize = 0;110            if (!WinHttpQueryDataAvailable( hRequest, &dwSize))111                printf( "Error %u in WinHttpQueryDataAvailable.\n",112                GetLastError());113          // Allocate space for the buffer.114            pszOutBuffer = new char[dwSize+1];115            if (!pszOutBuffer)116            {117                printf("Out of memory\n");118                dwSize=0;119            }120            else121            {122                // Read the Data.123                ZeroMemory(pszOutBuffer, dwSize+1);124              if (!WinHttpReadData( hRequest, (LPVOID)pszOutBuffer,125                    dwSize, &dwDownloaded))126                {127                    printf( "Error %u in WinHttpReadData.\n",128                        GetLastError());129                }130                else131                {132                     //printf("%s", pszOutBuffer);133                    // Data in vFileContent134                     vFileContent.push_back(pszOutBuffer);135                     136                }137              // Free the memory allocated to the buffer.138                delete [] pszOutBuffer;139            }140      } while (dwSize>0);141     // Keep checking for data until there is nothing left.142    // Report any errors.143        if (!bResults)144            printf("Error %d has occurred.\n",GetLastError());145      // Close any open handles.146        if (hRequest) WinHttpCloseHandle(hRequest);147        if (hConnect) WinHttpCloseHandle(hConnect);148        if (hSession) WinHttpCloseHandle(hSession);149        150        for(int i=0;i<(int)vFileContent.size();i++)151        {152            str=vFileContent[i];153            out<<str;154            strHtml += vFileContent[i];155        }156        out.close();157        return strHtml;158 }159 int _tmain(int argc, _TCHAR* argv[])160 {161 162    string str = GetHtml("http://bbs.bccn.net/thread-294526-1-1.html");163    //output the html code164    //cout << str << endl;165    system("pause");166    return 0;167 }