在Windows上使用libcurl发起HTTP请求-白红宇

在Windows上使用libcurl发起HTTP请求

阅读量：5908 次

发布时间：2019-06-19

本文共 2528 字，大约阅读时间需要 8 分钟。

curl下载地址

当前最新版本为7.61.0

将下载的curl-7.61.0.zip解压，得到curl-7.61.0

在目录curl-7.61.0\winbuild中打开cmd

找到vcvars32.bat的位置（它在VS的安装目录中），在刚刚打开的cmd中运行此bat（目的是设置临时的环境变量，使当前的cmd可以运行nmake）

在cmd中运行nmake /f Makefile.vc mode=dll VC=<VC版本>，例如nmake /f Makefile.vc mode=dll VC=14

构建结束后，curl-7.61.0\builds\libcurl-vc15-x86-release-dll-ipv6-sspi-winssl中的lib\libcurl.lib、bin\libcurl.dll和include\curl\*.h便是我们所需要的库和头文件

GET示例

#include 
     
      #include 
      
       #pragma comment(lib, "libcurl.lib")size_t writeFunction(void *data, size_t sizeOfEachObject, size_t numberOfObjects);int main(){    curl_global_init(CURL_GLOBAL_ALL);    CURL *curl = curl_easy_init();    if (curl)    {        const char *url = "https://api.eyekey.com/face/Check/checking?app_id=f89ae61fd63d4a63842277e9144a6bd2&app_key=af1cd33549c54b27ae24aeb041865da2&url=http%3A%2F%2Fpicview01.baomihua.com%2Fphotos%2F20120713%2Fm_14_634778197959062500_40614445.jpg";        curl_easy_setopt(curl, CURLOPT_URL, url);        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeFunction);        CURLcode curlCode = curl_easy_perform(curl);        if (CURLE_OK != curlCode)            fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(curlCode));        curl_easy_cleanup(curl);    }    else        printf("Something went wrong\n");    curl_global_cleanup();    system("pause");    return 0;}size_t writeFunction(void *data, size_t sizeOfEachObject, size_t numberOfObjects){    char *dataPtr = (char *)data;    dataPtr[numberOfObjects] = '\0';    printf("%s", dataPtr);    return sizeOfEachObject * numberOfObjects;}

POST示例

#include 
     
      #include 
      
       #pragma comment(lib, "libcurl.lib")int main(){    curl_global_init(CURL_GLOBAL_ALL);    CURL *curl = curl_easy_init();    if (curl)    {        const char *url = "https://api.eyekey.com/face/Check/checking";        curl_easy_setopt(curl, CURLOPT_URL, url);        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, "app_id=f89ae61fd63d4a63842277e9144a6bd2&app_key=af1cd33549c54b27ae24aeb041865da2&url=https://gss1.bdstatic.com/9vo3dSag_xI4khGkpoWK1HF6hhy/baike/w%3D268%3Bg%3D0/sign=18bb0cc2dd1373f0f53f68999c342cc6/caef76094b36acafe725024570d98d1000e99c46.jpg");        CURLcode curlCode = curl_easy_perform(curl);        if (CURLE_OK != curlCode)            fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(curlCode));        curl_easy_cleanup(curl);    }    curl_global_cleanup();    system("pause");    return 0;}

参考链接

转载于:https://www.cnblogs.com/buyishi/p/9362032.html

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