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我有带有 libcurl 的以下 C 代码将文件上传到我的网络服务器，几乎没问题，我需要上传的唯一问题是“Content-Type：application/vnd.ms-excel”，但它得到“Content-Type：application/ octet-stream”，尝试使用标头，但现在很幸运。在 PHP 中使用 curl 很容易，我只是这样做curl_setopt($ch, CURLOPT_POSTFIELDS, array("importfile" => "@".$file_path . ";type=application/vnd.ms-excel"并且工作正常。有什么帮助吗？想法？

#include <stdio.h>
#include <string.h>
#include <curl/curl.h>

int main(int argc, char *argv[])
{
  CURL *curl;
  CURLcode res;

  struct curl_httppost *formpost=NULL;
  struct curl_httppost *lastptr=NULL;
  struct curl_slist *headerlist=NULL;
  static const char buf[] = "Expect:";

  curl_global_init(CURL_GLOBAL_ALL);

  curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "importfile", CURLFORM_FILE, "document.csv", CURLFORM_END);
  curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "action", CURLFORM_COPYCONTENTS, "upload", CURLFORM_END);

  curl = curl_easy_init();
  headerlist = curl_slist_append(headerlist, buf);
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "http://www.myhost.com/upload/upload.php");
    if ( (argc == 2) && (!strcmp(argv[1], "noexpectheader")) )
      curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
    curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);

    res = curl_easy_perform(curl);
    if(res != CURLE_OK)
      fprintf(stderr, "curl_easy_perform() failed: %s\n",
              curl_easy_strerror(res));

    curl_easy_cleanup(curl);

    curl_formfree(formpost);
    curl_slist_free_all (headerlist);
  }
  return 0;
}

尝试将 HEADER 添加为“Content-Type：application/vnd.ms-excel”，但不正确，我得到：

Content-Type: application/vnd.ms-excel

在标题中，但我需要：

------WebbbbFormBoundaryXaI1UTNwqAyKWvLT
Content-Disposition: form-data; name="importfile"; filename="document.csv"
Content-Type: application/vnd.ms-excel

相反，我得到：

------WebbbbFormBoundaryXaI1UTNwqAyKWvLT
Content-Disposition: form-data; name="importfile"; filename="document.csv"
Content-Type: application/octet-stream

谢谢各位帮忙，答案是：

curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "importfile", CURLFORM_FILE, "document.csv", CURLFORM_CONTENTTYPE, "application/vnd.ms-excel", CURLFORM_END);
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1 回答 1

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您正在寻找curl_formadd的选项CURLFORM_CONTENTTYPE。

于 2013-02-04T12:46:08.843 回答