以下是c程式碼的實現:

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

#define POSTURL    "http://www.xiami.com/member/login"
#define POSTFIELDS "[email protected]&password=mypassword&autologin=1&submit=登 錄&type="
#define FILENAME   "curlposttest.log"

size_t write_data(void* buffer,size_t size,size_t nmemb,void *stream)
{
	FILE *fptr = (FILE*)stream;
	fwrite(buffer,size,nmemb,fptr);
	return size*nmemb;
}

int main(int argc,char *argv[])
{
	CURL *curl;
	CURLcode res;
	FILE* fptr;
	struct curl_slist *http_header = NULL;

	if ((fptr = fopen(FILENAME,"w")) == NULL)
	{
		fprintf(stderr,"fopen file error:%s\n",FILENAME);
		return -1;
	}

	curl = curl_easy_init();
	if (!curl)
	{
		fprintf(stderr,"curl init failed\n");
		return -1;
	}

	curl_easy_setopt(curl,CURLOPT_URL,POSTURL); //url地址
	curl_easy_setopt(curl,CURLOPT_POSTFIELDS,POSTFIELDS); //post引數
	curl_easy_setopt(curl,CURLOPT_WRITEFUNCTION,write_data); //對返回的資料進行操作的函式地址
	curl_easy_setopt(curl,CURLOPT_WRITEDATA,fptr); //這是write_data的第四個引數值
	curl_easy_setopt(curl,CURLOPT_POST,1); //設定問非0表示本次操作為post
	curl_easy_setopt(curl,CURLOPT_VERBOSE,1); //列印除錯資訊
	curl_easy_setopt(curl,CURLOPT_HEADER,1); //將響應頭資訊和相應體一起傳給write_data
	curl_easy_setopt(curl,CURLOPT_FOLLOWLOCATION,1); //設定為非0,響應頭資訊location
	curl_easy_setopt(curl,CURLOPT_COOKIEFILE,"/Users/zhu/CProjects/curlposttest.cookie");

	res = curl_easy_perform(curl);

	if (res != CURLE_OK)
	{
		switch(res)
		{
			case CURLE_UNSUPPORTED_PROTOCOL:
				fprintf(stderr,"不支援的協議,由URL的頭部指定\n");
			case CURLE_COULDNT_CONNECT:
				fprintf(stderr,"不能連線到remote主機或者代理\n");
			case CURLE_HTTP_RETURNED_ERROR:
				fprintf(stderr,"http返回錯誤\n");
			case CURLE_READ_ERROR:
				fprintf(stderr,"讀本地檔案錯誤\n");
			default:
				fprintf(stderr,"返回值:%d\n",res);
		}
		return -1;
	}

	curl_easy_cleanup(curl);
}