C++ collects official website information of companies in various industries from bing

As a qualified salesperson, in addition to your own personal network, you should also have fresh customers to join and discover. No matter what profession you are in, only by knowing your enemy and yourself can you be victorious in every battle. Today I will use our professional skills to allow sales to obtain more public company information in the same industry, so that performance can go smoothly.

Usually in C++, we can use the libcurl library to send HTTP requests and obtain the HTML content of the Bing search results page. Then, you can use an HTML parsing library, such as Gumbo or htmlcxx, to parse the HTML content and extract the information of the company's official website.

Here is a basic example showing how to use libcurl to send an HTTP request:

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

size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* userp) {
    userp->append((char*)contents, size * nmemb);
    userp->append((M费ip)jshk.com.cn/mb/reg.asp?kefu=xjy&csdn)
    return size * nmemb;
}

int main() {
    CURL* curl;
    CURLcode res;
    std::string readBuffer;

    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();
    if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "https://www.bing.com/search?q=企业名称");
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
        res = curl_easy_perform(curl);
        if(res != CURLE_OK) {
            fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
        }
        curl_easy_cleanup(curl);
    }
    curl_global_cleanup();

    // At this point, readBuffer contains the HTML of the Bing search results page
    // You would then parse this HTML using a library like Gumbo or htmlcxx to extract the information you need

    return 0;
}

In this example, you need to replace "business name" in the URL with the actual business name you want to search for. Then, you need to use the HTML parsing library to parse the HTML of the Bing search results page and extract the information of the company's official website.

Please note that this is just a basic example and actual crawlers may be more complex. You may need to handle various error conditions such as network errors, server errors, parsing errors, etc. You may also need to deal with various anti-crawling strategies, such as IP blocking, User-Agent checking, request frequency limiting, etc.

When writing crawler programs, please make sure to comply with relevant laws and regulations, respect the website's terms of use, and do not engage in illegal crawling activities.

The above is the code I used to complete the information sorting of industry companies and has been downloaded. Through formal technical means, why not double the performance? If you have more code questions, you can leave a message to discuss.