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我試圖做一個HTTP POST請求,我有兩個文本輸入和3個文件上傳CURL - 未知形式的選擇
我似乎無法得到要上傳的文件,當我嘗試添加使用
curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "brush", CURLFORM_FILE, brush_image, CURLFORM_END);
函數的返回值是CURL_FORMADD_UNKNOWN_OPTION
,我找不出什麼我做錯了的形式,這裏是我的代碼
CURL *curl;
CURLcode res;
struct curl_httppost *formpost = NULL;
struct curl_httppost *lastptr = NULL;
static const char buf[] = "Expect:";
curl_global_init(CURL_GLOBAL_ALL);
curl_formadd(&formpost,&lastptr,CURLFORM_COPYNAME, "letter", CURLFORM_COPYCONTENTS, "Letter A",CURLFORM_END);
curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "points", CURLFORM_COPYCONTENTS, "a b c", CURLFORM_END);
// these call return the unknown option
curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "brush", CURLFORM_FILE, brush_image, CURLFORM_END);
curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "lines", CURLFORM_FILE, lines_image, CURLFORM_END);
curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "downsample", CURLFORM_FILE, downsample_image, CURLFORM_END);
curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "submit", CURLFORM_COPYCONTENTS, "send", CURLFORM_END);
curl = curl_easy_init();
if (curl) {
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
res = curl_easy_perform(curl);
if (res != CURLE_OK) {
// does not go here...
}
curl_easy_cleanup(curl);
curl_formfree(formpost);
什麼是'brush_image'聲明,並在那裏把它初始化?或者,也許你正在使用不支持'CURLFORM_FILE'的curl的舊版本? – 2014-10-10 18:59:48
另外,如果'curl_easy_init()'失敗,你正在泄漏'formpost'。 – 2014-10-10 19:01:43
brush_image的類型是std :: string,它在之前被初始化,它有一個值,我用調試器進行了驗證。 – aviran 2014-10-10 19:03:15