curl下载网页

场景：利用CURL下载网页内容，中文显示为乱码解决思路

利用CURL下载网页内容，中文显示为乱码
利用libcurl连接网络并下载网页内容，有些网页内容中文显示为乱码，但浏览器中打开的网页为正常，我的本地系统编码是utf-8的，网页编码也是utf-8的，可为什么显是为乱码呢，请高手指教
附我的curl设置：
CURL *curl;
curl = curl_easy_init();

if(!curl) {
return NULL;
}

WriteData * pWriteData = (WriteData*)malloc(sizeof(WriteData));

if(!pWriteData)
return NULL;

memset(pWriteData->pcPageBuf, '\0', MAX_PAGE_SIZE + 1);
pWriteData->iPageBufOffset = 0;

curl_easy_setopt(curl, CURLOPT_URL, sUrl.c_str());

if(!sProxy.empty())
curl_easy_setopt(curl, CURLOPT_PROXY, sProxy.c_str());

curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, Curl_Write_Func);

curl_easy_setopt(curl, CURLOPT_WRITEDATA, pWriteData);

curl_easy_setopt(curl, CURLOPT_TIMEOUT,10); // 超时设置，免得程序被堵住

curl_easy_setopt(curl, CURLOPT_AUTOREFERER, 1); // 以下3个为重定向设置

curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1); 

curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 1);

curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);  

curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);

/* some servers don't like requests that are made without a user-agent field, so we provide one */
curl_easy_setopt(curl, CURLOPT_USERAGENT, "libcurl-agent/1.0");

CURLcode res;
res = curl_easy_perform(curl);


char pcPageBuf[MAX_PAGE_SIZE + 1]; // 为了应付网易的搜索页面中含'\0'
memset(pcPageBuf, 0, MAX_PAGE_SIZE+1);
int j = 0;

for(int i=0; i<pWriteData->iPageBufOffset; i++) {

if(*(pWriteData->pcPageBuf+i) != '\0') {  

pcPageBuf[j] = *(pWriteData->pcPageBuf+i);
j++;

if(j > MAX_PAGE_SIZE)
break;

}
}

string sHTMLContent = pcPageBuf;


free(pWriteData);

curl_easy_cleanup(curl);

------解决方案--------------------
应该还是编码方式，检查下生成文件的时候的编码