C语言爬虫程序编写的爬取APP通用模板-编程知识

C语言爬虫程序编写的爬取APP通用模板

互联网的飞快发展，尤其是手机终端业务的发展，让越来越多的事情都能通过手机来完成，电脑大部分的功能也都能通过手机实现，今天我就用C语言写一个手机APP类爬虫教程，方便后期拓展APP爬虫业务。而且这个模板是通用的适合各种APP爬虫，下面跟着我看下具体的代码吧。

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下面就是我给大家提供一个基本的C语言爬虫程序的框架，您可以根据实际情况进行修改。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <curl/curl.h>#define MAX_URL_LEN 256
#define MAX_FILE_LEN 1024typedef struct {char url[MAX_URL_LEN];char file[MAX_FILE_LEN];
} URL_FILE;int main(int argc, char *argv[]) {CURL *curl;CURLcode res;URL_FILE urlfile;if (argc != 3) {printf("Usage: %s <url> <file>\n", argv[0]);return 1;}curl_global_init(CURL_GLOBAL_DEFAULT);curl = curl_easy_init();if(curl) {urlfile.url = argv[1];urlfile.file = argv[2];curl_easy_setopt(curl, CURLOPT_URL, urlfile.url);curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);curl_easy_setopt(curl, CURLOPT_WRITEDATA, &urlfile.file);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();return 0;
}size_t write_data(void *ptr, size_t size, size_t nmemb, FILE *stream) {size_t total = size * nmemb;int written;written = fwrite(ptr, size, nmemb, stream);if (written != total)fprintf(stderr, "Error writing to file\n");return total;
}