Libcurl ftp Windows下使用实现下载删除

1.下载最新版的libcurl，纯净版的，不要下载简化版的，简化版的，可能没有winbuild文件所以可能就会没有Makefile.vc.我的是curl-7.44.0.zip，解压，进入目录winbuild，仔细阅读BUILD.WINDOWS.txt这篇文档

打开VS2013 开发人员命令提示并进入到winbuild文件执行 nmake /f Makefile.vc mode=static<mode=static or dll> VC=12<对应的VS版本>

完成编译后libcurl静态库会出现在builds目录下包括头文件和libcurl_a.lib，我们需要的是builds/libcurl-vc12-x86-release-static-ipv6-sspi-winssl下面的include和lib两个文件夹.

struct FtpFile //定义一个结构为了传递给my_fwrite函数.可用curl_easy_setopt的CURLOPT_WRITEDATA选项传递
{
char *filename;
FILE *stream;
};

int my_fwrite(void *buffer, size_t size, size_t nmemb, void *stream)
{
   struct FtpFile *out = (struct FtpFile *)stream; // stream指针其实就是指向struct FtpFile ftpfile的
   if (out && !out->stream)
   {
       out->stream = fopen(out->filename, "wb"); //没有这个流的话就创建一个名字是out->filename.
       if (!out->stream)
           return -1;
   }
   return fwrite(buffer, size, nmemb, out->stream);
}

下载代码

CURL *curl;
   CURLcode res;
   char Pathdown[200] = {0};
   CString Dolwnpath = _T("");
   Dolwnpath = "D:/";
   Dolwnpath += FileName;
   strcpy(Pathdown, Dolwnpath);
   struct FtpFile ftpfile = {Pathdown, NULL }; //初始化一个FtpFile结构
   curl_global_init(CURL_GLOBAL_DEFAULT);
   //XID8690_LoadLib();
   curl = curl_easy_init();
   CString addrInfo = _T("");
   logstrdlg.Empty();
   logstrdlg = "下载源文件：";
   logstrdlg += FileName;
   //logstrdlg += "\r\n";
   ftp.IWriteLog(logstrdlg);
   logstrdlg.Empty();
   logstrdlg = "目标文件:";
   logstrdlg += Dolwnpath;
   ftp.IWriteLog(logstrdlg);
   if (curl)
   {
       addrInfo = "ftp://192.168.1.6/";
       addrInfo += FileName;
       curl_easy_setopt(curl, CURLOPT_URL, addrInfo);
       curl_easy_setopt(curl, CURLOPT_USERPWD, ":1234");
       curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_fwrite);
       curl_easy_setopt(curl, CURLOPT_WRITEDATA, &ftpfile); //给相关函数的第四个参数传递一个结构体的指针
       curl_easy_setopt(curl, CURLOPT_VERBOSE, TRUE);//CURLOPT_VERBOSE 这个选项很常用用来在屏幕上显示对服务器相关操作返回的信息

res = curl_easy_perform(curl);
curl_easy_cleanup(curl);

       if (CURLE_OK != res)
       {
           //fprintf(stderr, "curl told us %d\n", res);
           logstrdlg.Format("curl told us %d\n", res);
           ftp.IWriteLog(logstrdlg);
           return FALSE;
       }
       logstrdlg.Empty();
       logstrdlg.Format("curl told us %d\n", res);
       logstrdlg.Remove('\r');
       logstrdlg.Remove('\n');
       ftp.IWriteLog(logstrdlg);
   }
   if (ftpfile.stream)
       fclose(ftpfile.stream);
   curl_global_cleanup();

return TRUE;

删除代码：

CURL *curlhandle = NULL;
CURL *curl = NULL;
CURLcode res = CURLE_GOT_NOTHING;

   curl_global_init(CURL_GLOBAL_DEFAULT);
   curlhandle = curl_easy_init();
   curl = curl_easy_init();
   if (curl) {
       CString cstrTemp = CString("DELE /") + CString(remotepath);
       CString cstrTemp1 = CString(IP);
       curl_easy_setopt(curl, CURLOPT_URL, cstrTemp1.GetBuffer());
       curl_easy_setopt(curl, CURLOPT_USERPWD, "x1:1234");
       cstrTemp1.ReleaseBuffer();
       struct curl_slist *headers = NULL;
       headers = curl_slist_append(headers, cstrTemp.GetBuffer());
       curl_easy_setopt(curl, CURLOPT_QUOTE, headers);
       cstrTemp.ReleaseBuffer();
       res = curl_easy_perform(curl);
       curl_slist_free_all(headers);
       curl_easy_cleanup(curlhandle);
       curl_easy_cleanup(curl);
       /*if (CURLE_OK != res) {
           char cTemp[128] = { 0 };
           sprintf(cTemp, "%s\n", curl_easy_strerror(res));
           OutputDebugString(cTemp);
           MessageBox(cTemp, "提示");
           return 0;
       }*/
   }

curl_global_cleanup();
return TRUE;

删除时出现报23错误，还未找到原因，希望有人找出，虽然报错，但是可以删除

Libcurl ftp Windows下使用实现下载删除

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