Crest Post Json是一種使用C語言的RESTful API,用于在網(wǎng)絡(luò)上傳輸數(shù)據(jù)。在本篇文章中,我們將探討如何使用Crest Post Json進(jìn)行POST操作。
//引入必要的頭文件 #include#include #include #include //定義請求數(shù)據(jù)結(jié)構(gòu)體 struct WriteThis { const char *readptr; size_t sizeleft; }; //定義發(fā)送請求的函數(shù) static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp) { struct WriteThis *pooh = (struct WriteThis *)userp; if (size*nmemb< 1) return 0; if (pooh->sizeleft) { *(char *)ptr = pooh->readptr[0]; pooh->readptr++; pooh->sizeleft--; return 1; } return 0; } //定義主函數(shù) int main(void) { CURL *curl; CURLcode res; struct WriteThis pooh; char *json = "{\"message\": \"Hello, world!\"}"; //初始化curl對象 curl = curl_easy_init(); if(curl) { //設(shè)置POST請求方法 curl_easy_setopt(curl, CURLOPT_POST, 1L); //設(shè)置請求主體數(shù)據(jù) pooh.readptr = json; pooh.sizeleft = strlen(json); //設(shè)置請求地址和發(fā)送數(shù)據(jù) curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/post_json_here"); curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback); curl_easy_setopt(curl, CURLOPT_READDATA, &pooh); //執(zhí)行POST請求 res = curl_easy_perform(curl); /* Check for errors */ if(res != CURLE_OK) fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res)); /* always cleanup */ curl_easy_cleanup(curl); } return 0; }
以上就是使用Crest Post Json進(jìn)行POST操作的一些簡單示例。在實(shí)際應(yīng)用中,我們還需要根據(jù)具體的業(yè)務(wù)需求對代碼進(jìn)行調(diào)整。