libcurl 上传文件至 web服务器

测试环境搭建， 使用 wamp server （windows下的 apache+MySQL+php） 

libcurl vc6 工程代码  下载地址：  http://download.csdn.net/detail/mtour/8060775

处理上传文件 php  代码

<?php

  if ($_FILES["file"]["error"] > 0)
    {
    echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
    }
  else
    {
    echo "Upload: " . $_FILES["file"]["name"] . "<br />";
    echo "Type: " . $_FILES["file"]["type"] . "<br />";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";

    if (file_exists("./" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. ";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "./" . $_FILES["file"]["name"]);
      echo "Stored in: " . "/" . $_FILES["file"]["name"];
      }
    }
?>

libcurl  代码

// libCur1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <stdio.h>
#include "curl/curl.h"

#define MAX_BUFF_LEN 1048576 /*1M*/
#define POST_URL "http://10.10.1.4/d/upload.php"


int get_file_size(char *filename)
{
    FILE* fp = NULL;
    int nFileLen = 0;

    fp = fopen(filename, "rb");

    if (fp == NULL)
    {
        return 0;
    }

    fseek(fp,0,SEEK_END); //定位到文件末
    nFileLen = ftell(fp); //文件长度
    return nFileLen;
}

int http_post_file(const char *url, const char *filename)
{
    CURL *curl = NULL;
       CURLcode res;

      struct curl_httppost *post=NULL;
      struct curl_httppost *last=NULL;
      struct curl_slist *headerlist=NULL;

    if(filename == NULL || url == NULL)
        return -1;

    printf("URL: %s
", url);
    printf("filename: %s
", filename);

    /* Add simple file section */
    if( curl_formadd(&post, &last, CURLFORM_COPYNAME, "file",
               CURLFORM_FILE, filename, CURLFORM_END) != 0)
    {
        fprintf(stderr, "curl_formadd error.
");
        return -1;
    }

      /* Fill in the submit field too, even if this is rarely needed */
      curl_formadd(&post, &last,
               CURLFORM_COPYNAME, "submit",
               CURLFORM_COPYCONTENTS, "OK",
               CURLFORM_END);

    //curl_global_init(CURL_GLOBAL_ALL);
    curl = curl_easy_init();
    if(curl == NULL)
    {
        fprintf(stderr, "curl_easy_init() error.
");
        curl_formfree(post);
        return -1;
    }

    curl_easy_setopt(curl, CURLOPT_HEADER, 0);
    curl_easy_setopt(curl, CURLOPT_URL, url); /*Set URL*/
    curl_easy_setopt(curl, CURLOPT_HTTPPOST, post);
    int timeout = 5;
    curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout);
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 1);

    res = curl_easy_perform(curl);
    if(res != CURLE_OK)
    {
        fprintf(stderr, "curl_easy_perform[%d] error.
", res);
        curl_formfree(post);
        return -1;
    }

    curl_easy_cleanup(curl);

    return 0;
}

int main()
{

    char sFilePath[128]="d:\20130828131421113.jpg";

    //Check File Size
    if(get_file_size(sFilePath) >= MAX_BUFF_LEN)
    {
        fprintf(stderr, "File Size is Big!
");
        return -1;
    }

    //POST File
    http_post_file(POST_URL, sFilePath);

    getchar();

    return 0;
}