需求
获取自己的CSDN资源下载列表的数据
步骤：
1.登录csdn(已成功)
2.获取登录成功后的cookie，并保存到本地（mycookie.txt）（也已成功）
3.使用之前获取的cookie访问CSDN资源下载列表(失败)
代码我已经精简了下，方便各位同仁测试（只要先使用其他浏览器登录下csdn，就可以得到cookie，然后，手动将得到的cookie复制到代码中就可以进行测试）
备：libcurl刚接触，碰到一个cookie问题，搞了下午，不仅焦头烂额而且还没成功，找不到失败的原因，如果大家方便的话，还麻烦帮忙小测试下,再次先感谢大家的帮忙~！
使用libcurl发送消息头（附带cookie信息）的时候，服务端返回“请先登录”的信息。
cookie信息是没错的，请会的朋友帮我看下，是不是发送cookie信息的写法有问题呢？
long writer(void *data, int size, int nmemb, string &content)
{
long sizes = size * nmemb;
string temp((char*)data,sizes);
content += temp;
return sizes;
}
bool CurlInit(CURL *&curl, const char* url,string &content)
{
CURLcode code;
string error;
curl = curl_easy_init();
if (curl == NULL)
{
printf( "Failed to create CURL connection\n");
return false;
}
code = curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, error);
if (code != CURLE_OK)
{
printf( "Failed to set error buffer [%d]\n", code );
return false;
}
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
code = curl_easy_setopt(curl, CURLOPT_URL, url);
if (code != CURLE_OK)
{
printf("Failed to set URL [%s]\n", error);
return false;
}
code = curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
if (code != CURLE_OK)
{
printf( "Failed to set redirect option [%s]\n", error );
return false;
}
//writer:回调函数
code = curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writer);
if (code != CURLE_OK)
{
printf( "Failed to set writer [%s]\n", error);
return false;
}
//回调函数的参数：content
code = curl_easy_setopt(curl, CURLOPT_WRITEDATA, &content);
if (code != CURLE_OK)
{
printf( "Failed to set write data [%s]\n", error );
return false;
}
return true;
}
void GetDownloadList(int pageNum)
{
CURL *easy_handle;
CURLcode res;
curl_global_init(CURL_GLOBAL_ALL);
easy_handle = curl_easy_init();
if(easy_handle)
{
string content;
//get参数
char url[128] = {0};
sprintf(url,"http://download.csdn.net/my/downloads/%d",pageNum);
//http请求头
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers,"User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0"); //模拟浏览器
headers = curl_slist_append(headers,"Host:download.csdn.net");
headers = curl_slist_append(headers,"Referer:http://www.csdn.net/");
headers = curl_slist_append(headers,"Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
headers = curl_slist_append(headers,"Accept-Language:zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3");
headers = curl_slist_append(headers,"Accept-Encoding:gzip, deflate");
headers = curl_slist_append(headers,"Connection:keep-alive");
headers = curl_slist_append(headers,"Cookie:UserName=用户名;UserInfo=userinfo信息（直接从火狐浏览器抓取）");
//发送http请求头
curl_easy_setopt(easy_handle, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(easy_handle, CURLOPT_URL, url);
if ( !CurlInit(easy_handle,url,content) )
{
printf( "Failed to global init default [%d]\n" );
return;
}
//执行http请求
res = curl_easy_perform(easy_handle);
if(res != CURLE_OK)
fprintf(stderr,"curl_easy_perform() failed: %s\n",curl_easy_strerror(res));
double length = 0;
res = curl_easy_getinfo(easy_handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD , &length);
FILE * file = fopen("1.html","wb");
fseek(file,0,SEEK_SET);
fwrite(content.c_str(),1,length,file);
fclose(file);
//释放资源
curl_slist_free_all(headers);
curl_easy_cleanup(easy_handle);
}
curl_global_cleanup();
}
int _tmain(int argc, _TCHAR* argv[])
{
GetDownloadList(1);
getchar();
return 0;
}
返回信息
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script>
alert("请您先登录！");
window.location.href="http://passport.csdn.net/account/login"
</script>
</head>
<body>
</body>
</html>
Python代码
注：之前使用python代码也写过一个，可以成功获取，代码也顺便贴上，借此，可以发现和C++中的http消息请求头其实是一样的
#获取之前下载的资源列表
def GetDownloadList(page):
#get参数
url="http://download.csdn.net/my/downloads/"+page
#http请求头
#经过测试,只需发送UserName和UserInfo这2个cookie值即可
headers={"Host": "download.csdn.net",
"User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0",
"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"Accept-Language":"zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3",
"Accept-Encoding":"gzip, deflate",
"Referer":"http://www.csdn.net/",
"Connection":"keep-alive",
"Cookie":"UserName="+cookies["UserName"]+";UserInfo="+cookies["UserInfo"]
}
r = requests.get(url,headers = headers)
return r.text
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