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  • 網站首頁 > 物聯資訊 > 技術分享

    C++實現Http Post請求

    2016-09-28 00:00:00 廣州睿豐德信息科技有限公司 閱讀
    睿豐德科技 專注RFID識別技術和條碼識別技術與管理軟件的集成項目。質量追溯系統、MES系統、金蝶與條碼系統對接、用友與條碼系統對接

    參考資料:

    http://apps.hi.baidu.com/share/detail/39003388

    http://blog.csdn.net/yc0188/article/details/4741871

    http://bbs.chinaunix.net/thread-2094334-1-1.html


    //頭文件

    #include <iostream>
    #include <string>
    #include <Winsock2.h>

    using namespace std;


    //函數聲明

    int request(char* hostname, char* api, char* parameters);


    //方法調用

    int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
    {
        int nRetCode = 0;


        // initialize MFC and print and error on failure
        if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0))
        {
            // TODO: change error code to suit your needs
            _tprintf(_T("Fatal Error: MFC initialization failed\n"));
            return 1;
        }
        
        request("reg.163.com", "http://reg.163.com/CheckUser.jsp", "test");

        return nRetCode;
    }


    //函數實現
    int request(char* hostname, char* api, char* parameters)
    {
        WSADATA WsaData;
        WSAStartup(0x0101, &WsaData);


        //初始化socket
        struct hostent* host_addr = gethostbyname(hostname);
        if (host_addr == NULL)
        {
            cout<<"Unable to locate host"<<endl;
            return -103;
        }


        sockaddr_in sin;
        sin.sin_family = AF_INET;
        sin.sin_port = htons((unsigned short)80);
        sin.sin_addr.s_addr = *((int*)*host_addr->h_addr_list);


        int sock = socket(AF_INET, SOCK_STREAM, 0);
        if (sock == -1)
        {
            return -100;
        }


        //建立連接
        if (connect(sock, (const struct sockaddr *)&sin, sizeof(sockaddr_in) ) == -1)
        {
            cout<<"connect failed"<<endl;
            return -101;
        }


        //初始化發送信息
        char send_str[2048] = {0};


        //頭信息
        strcat(send_str, "POST ");
        strcat(send_str, api);
        strcat(send_str, " HTTP/1.1\r\n");
        strcat(send_str, "Host: ");
        strcat(send_str, hostname);
        strcat(send_str, "\r\n");
        strcat(send_str, "Connection: keep-alive\r\n");


        char content_header[100];
        sprintf(content_header,"Content-Length: %d\r\n", strlen(parameters));


        strcat(send_str, content_header);
        strcat(send_str, "Cache-Control: max-age=0\r\n");
        strcat(send_str, "Origin: http://www.hao123.com\r\n");
        strcat(send_str, "User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/15.0.849.0 Safari/535.1\r\n");
        strcat(send_str, "Content-Type: application/x-www-form-urlencoded\r\n");
        strcat(send_str, "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");
        strcat(send_str, "Referer: http://www.hao123.com/\r\n");
        strcat(send_str, "Accept-Encoding: gzip,deflate,sdch\r\n");
        strcat(send_str, "Accept-Language: zh-CN,zh;q=0.8\r\n");


        //內容信息
        strcat(send_str, "\r\n");
        strcat(send_str, parameters);


        if (send(sock, send_str, strlen(send_str),0) == -1)
        {
            cout<<"send failed"<<endl;
            return -101;
        }


        //獲取返回信息
        char recv_str[4096] = {0};
        if (recv(sock, recv_str, sizeof(recv_str), 0) == -1)
        {
            cout<<"recv failed"<<endl;
            return -101;
        }


        cout<<recv_str<<endl;


        WSACleanup( );


        return 0;
    }

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