添加链接
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1)curl头文件和lib拷贝到工程目录

2)配置附加包含目录libcurl中的include和附加库目录libcurl中的lib目录

3)添加预编译宏USE_OPENSSL和CURL_STATICLIB

4)添加如依赖库

crypt32.lib
ws2_32.lib
wldap32.lib
libcurl.lib

注意版本对应

3, 代码示例

  • #include <iostream>
  • #include <string>
  • #include "curl/curl.h"
  • using namespace std;
  • #pragma comment(lib, "ws2_32.lib")
  • #pragma comment(lib, "wldap32.lib")
  • #pragma comment(lib, "libcurl.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;
  • 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;
  • auto res = curl_post_req(postUrlStr, postParams, postResponseStr);
  • if (res != CURLE_OK)
  • cerr << "curl_easy_perform() failed: " + string(curl_easy_strerror(res)) << endl;
  • cout << postResponseStr << endl;
  • // global release
  • curl_global_cleanup();
  • system( "pause");
  • return 0;
  •