vs2015下配置使用libcurl-蒲公英云

vs2015下配置使用libcurl

首先通过nuget获取openssl和curl，不用加任何其它的东西，包括属性设置

// http4.cpp : 定义控制台应用程序的入口点。
//
//别人的代码学习下
#include "stdafx.h"
#include <iostream>
#include <string>
#include <curl/curl.h>
#include <wincrypt.h>
using namespace std;
#pragma comment(lib, "ws2_32.lib")
#pragma comment(lib, "wldap32.lib")
#pragma comment(lib, "crypt32.lib")
#pragma comment(lib, "advapi32.lib")
#pragma comment(lib, "libcurl.lib")
#pragma comment(lib, "libssl.lib")
#pragma comment(lib, "libcrypto.lib")
// reply of the requery
size_t req_reply(void *ptr, size_t size, size_t nmemb, void *stream)
{
    cout << "----->reply" << endl;
    string *str = (string*)stream;
    cout << *str << endl;
    (*str).append((char*)ptr, size*nmemb);
    return size * nmemb;
}
// http GET
CURLcode curl_get_req(const std::string &url, std::string &response)
{
    // init curl
    CURL *curl = curl_easy_init();
    // res code
    CURLcode res;
    if (curl)
    {
        // set params
        curl_easy_setopt(curl, CURLOPT_URL, url.c_str()); // url
        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false); // if want to use https
        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, false); // set peer and host verify false
        curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
        curl_easy_setopt(curl, CURLOPT_READFUNCTION, NULL);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, req_reply);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&response);
        curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
        curl_easy_setopt(curl, CURLOPT_HEADER, 1);
        curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 3); // set transport and time out time
        curl_easy_setopt(curl, CURLOPT_TIMEOUT, 3);
        // start req
        res = curl_easy_perform(curl);
    }
    // release curl
    curl_easy_cleanup(curl);
    return res;
}
// http POST
CURLcode curl_post_req(const string &url, const string &postParams, string &response)
{
    // init curl
    CURL *curl = curl_easy_init();
    // res code
    CURLcode res;
    if (curl)
    {
        // set params
        curl_easy_setopt(curl, CURLOPT_POST, 1); // post req
        curl_easy_setopt(curl, CURLOPT_URL, url.c_str()); // url
        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postParams.c_str()); // params
        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false); // if want to use https
        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, false); // set peer and host verify false
        curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
        curl_easy_setopt(curl, CURLOPT_READFUNCTION, NULL);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, req_reply);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&response);
        curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
        curl_easy_setopt(curl, CURLOPT_HEADER, 1);
        curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 3);
        curl_easy_setopt(curl, CURLOPT_TIMEOUT, 3);
        // start req
        res = curl_easy_perform(curl);
    }
    // release curl
    curl_easy_cleanup(curl);
    return res;
}
int main()
{
    // global init
    curl_global_init(CURL_GLOBAL_ALL);
    // test get requery
    string getUrlStr = "http://cn.bing.com/images/trending?form=Z9LH";
    string getResponseStr;
    auto res = curl_get_req(getUrlStr, getResponseStr);
    if (res != CURLE_OK)
        cerr << "curl_easy_perform() failed: " + string(curl_easy_strerror(res)) << endl;
    else
        cout << getResponseStr << endl;
    // test post requery
    string postUrlStr = "https://www.baidu.com/s";
    string postParams = "f=8&rsv_bp=1&rsv_idx=1&word=picture&tn=98633779_hao_pg";
    string postResponseStr;
    res = curl_post_req(postUrlStr, postParams, postResponseStr);
    if (res != CURLE_OK)
        cerr << "curl_easy_perform() failed: " + string(curl_easy_strerror(res)) << endl;
    else
        cout << postResponseStr << endl;
    // global release
    curl_global_cleanup();
    system("pause");
    return 0;
}