以编程方式读取网页

Programmatically reading a web page(以编程方式读取网页)

问题描述

我想用 C/C++ 编写一个程序，该程序将动态读取网页并从中提取信息.例如，假设您想编写一个应用程序来关注和记录 ebay 拍卖.有没有一种简单的方法来抓取网页?提供此功能的库?以及是否有一种简单的方法可以解析页面以获取特定数据?

I want to write a program in C/C++ that will dynamically read a web page and extract information from it. As an example imagine if you wanted to write an application to follow and log an ebay auction. Is there an easy way to grab the web page? A library which provides this functionality? And is there an easy way to parse the page to get the specific data?

推荐答案

看看 cURL 库:

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

 int main(void)
 {
   CURL *curl;
   CURLcode res;

   curl = curl_easy_init();
   if(curl) {
     curl_easy_setopt(curl, CURLOPT_URL, "curl.haxx.se");
     res = curl_easy_perform(curl);
      /* always cleanup */
    curl_easy_cleanup(curl);
   }
   return 0;
 }

顺便说一句，如果不严格要求 C++.我鼓励您尝试 C# 或 Java.这要容易得多，而且有一种内置方法.

BTW, if C++ is not strictly required. I encourage you to try C# or Java. It is much easier and there is a built-in way.

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