libcurl抓取base64編碼的頁面內容

使用之前需安裝libcurl，代碼如下：

1.LibcurlUtil.h

#ifndef LIBCURLUTIL_H_

#define LIBCURLUTIL_H_
#include "curl/curl.h"
#include <string>
class CurlUtil{
public:
    static size_t asynHttpRequestCallback(void *ptr, size_t size, size_t nmemb, void *stream);
    static void asynHttpRequest(std::string url, bool useGzip);
};

#endif

2.LibcurlUtil.cpp

#include "LibcurlUtil.h"
FILE *fp;
size_t CurlUtil::asynHttpRequestCallback(void *ptr, size_t size, size_t nmemb, void *stream){
    size_t written = fwrite((char*)ptr, size, nmemb, (FILE *)fp);
    //fprintf(stderr,"written size %d\n",written);
    return written;
}

void CurlUtil::asynHttpRequest(std::string url, bool useGzip){
    CURL* curl;
    fp = fopen("libcurlfile.txt","wb");
    if(fp == NULL)
    {
        curl_easy_cleanup(curl);
        fprintf(stderr,"Failed to open file libcurlfile.txt\n");
        return ;
    }
    curl = curl_easy_init();
    curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
    if (useGzip) {
        curl_easy_setopt(curl, CURLOPT_ENCODING, "gzip");
    }
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, asynHttpRequestCallback);
    curl_easy_perform(curl);
    curl_easy_cleanup(curl);
    fclose(fp);
}

3.main.cpp

int main(int args,char *argv[]){

    CurlUtil::asynHttpRequest("http://www.yoururl.com/HighKWordlist.txt",true);

    return 0;

}

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轉載請註明出處：山水間部落格，http://blog.csdn.net/linyanwen99/article/details/7730415