430 lines
14 KiB
PHP
430 lines
14 KiB
PHP
<?php
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declare (strict_types = 1);
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namespace app\service;
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/**
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* 爬虫服务类
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* 用于处理职位信息爬取相关逻辑
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*/
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class CrawlerService
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{
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/**
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* 应用路径
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*/
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private const APP_PATH = '/tyzpwb';
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/**
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* 获取基础URL（域名和端口）
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* @return string
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*/
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private function getBaseUrlHost(): string
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{
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// 从配置服务获取BASE_URL
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$configService = new \app\service\ConfigService();
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return $configService->getBaseUrl();
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}
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/**
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* 获取完整基础URL（包含应用路径）
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* @return string
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*/
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public function getBaseUrl(): string
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{
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return $this->getBaseUrlHost() . self::APP_PATH;
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}
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/**
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* 构建HTTP请求头（用于HTML页面请求）
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* @param string $cookieString Cookie字符串
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* @param string $referer Referer URL
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* @return array
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*/
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public function buildHtmlHeaders(string $cookieString, string $referer): array
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{
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return [
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'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7',
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'Accept-Language: zh-CN,zh;q=0.9',
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'Accept-Encoding: gzip, deflate',
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'Cache-Control: no-cache',
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'Connection: keep-alive',
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'Cookie: ' . $cookieString,
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'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36',
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'Referer: ' . $referer,
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'Upgrade-Insecure-Requests: 1',
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];
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}
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/**
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* 构建HTTP请求头（用于AJAX请求）
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* @param string $cookieString Cookie字符串
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* @param string $referer Referer URL
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* @param string $browserType 浏览器类型：'chrome' 或 'firefox'，默认为 'chrome'
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* @param string|null $origin Origin URL（可选，Firefox时自动使用BASE_URL）
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* @param bool $withCharset 是否在Content-Type中包含charset=UTF-8，默认为false
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* @return array
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*/
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public function buildAjaxHeaders(string $cookieString, string $referer, string $browserType = 'chrome', ?string $origin = null, bool $withCharset = false): array
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{
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$isFirefox = $browserType === 'firefox';
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$headers = [
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'Accept: text/plain, */*',
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'Accept-Language: zh-CN,zh;q=0.9,zh-TW;q=0.8,zh-HK;q=0.7,en-US;q=0.6,en;q=0.5',
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'Accept-Encoding: gzip, deflate',
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'Cache-Control: no-cache',
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'Connection: keep-alive',
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'Content-Type: application/x-www-form-urlencoded' . ($withCharset ? '; charset=UTF-8' : ''),
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'Cookie: ' . $cookieString,
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'Referer: ' . $referer,
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'X-Requested-With: XMLHttpRequest',
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];
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// Firefox特有：添加Pragma头
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if ($isFirefox) {
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$headers[] = 'Pragma: no-cache';
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}
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// User-Agent
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if ($isFirefox) {
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$headers[] = 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:147.0) Gecko/20100101 Firefox/147.0';
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} else {
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$headers[] = 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36';
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}
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// Origin
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if ($isFirefox) {
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$headers[] = 'Origin: ' . $this->getBaseUrlHost();
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} elseif ($origin !== null) {
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$headers[] = 'Origin: ' . $origin;
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}
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return $headers;
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}
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/**
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* 获取职位树数据
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* @param string $dsdm 地区代码
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* @param string $examid 考试ID
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* @param string $bmid 部门ID
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* @param string $userid 用户ID
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* @param string $aa 时间戳（必须与selectPosition页一致）
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* @param array $cookies Cookie数据
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* @return array
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*/
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public function getPositionTree(string $dsdm, string $examid, string $bmid, string $userid, string $aa, array $cookies): array
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{
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$baseUrl = $this->getBaseUrl();
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$url = $baseUrl . '/tree/getPositionTree.htm';
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$cookieString = $this->buildCookieString($cookies);
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// 构建Referer URL（包含完整参数）
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$refererUrl = $baseUrl . "/stuchooseexam/selectPosition.htm?examstupid=1015&userid={$userid}&bmid={$bmid}&examid={$examid}&aa={$aa}";
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// 构建POST参数
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$postData = [
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'examid' => $examid,
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'bmid' => $bmid,
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'userid' => $userid,
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'dsdm' => $dsdm
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];
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
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curl_setopt($ch, CURLOPT_ENCODING, ''); // 自动处理gzip编码
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curl_setopt($ch, CURLOPT_HTTPHEADER, $this->buildAjaxHeaders($cookieString, $refererUrl, 'firefox'));
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curl_setopt($ch, CURLOPT_POST, true);
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curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData));
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curl_setopt($ch, CURLOPT_TIMEOUT, 30);
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
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$response = curl_exec($ch);
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$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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$error = curl_error($ch);
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curl_close($ch);
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if ($error) {
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throw new \Exception('请求失败: ' . $error);
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}
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if ($httpCode !== 200) {
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throw new \Exception('请求失败，HTTP状态码: ' . $httpCode);
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}
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$data = json_decode($response, true);
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if (json_last_error() !== JSON_ERROR_NONE) {
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throw new \Exception('JSON解析失败: ' . json_last_error_msg());
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}
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return $data ?: [];
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}
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/**
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* 获取职位详细信息
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* @param string $zwdm 职位代码
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* @param string $examid 考试ID
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* @param array $cookies Cookie数据
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* @return array
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*/
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public function getPositionInfo(string $zwdm, string $examid, array $cookies): array
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{
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$baseUrl = $this->getBaseUrl();
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$url = $baseUrl . '/stuchooseexam/getPositionInfo.htm';
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$cookieString = $this->buildCookieString($cookies);
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$referer = $baseUrl . '/stuchooseexam/selectPosition.htm';
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$origin = $this->getBaseUrlHost();
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
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curl_setopt($ch, CURLOPT_ENCODING, ''); // 自动处理gzip编码
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curl_setopt($ch, CURLOPT_HTTPHEADER, $this->buildAjaxHeaders($cookieString, $referer, 'chrome', $origin, true));
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curl_setopt($ch, CURLOPT_POST, true);
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curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
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'zwdm' => $zwdm,
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'examid' => $examid
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]));
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curl_setopt($ch, CURLOPT_TIMEOUT, 30);
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
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$response = curl_exec($ch);
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$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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$error = curl_error($ch);
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curl_close($ch);
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if ($error) {
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throw new \Exception('请求失败: ' . $error);
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}
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if ($httpCode !== 200) {
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throw new \Exception('请求失败，HTTP状态码: ' . $httpCode);
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}
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$data = json_decode($response, true);
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if (json_last_error() !== JSON_ERROR_NONE) {
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throw new \Exception('JSON解析失败: ' . json_last_error_msg());
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}
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return $data ?: [];
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}
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/**
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* 批量获取职位信息
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* @param array $zwdmList 职位代码列表
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* @param string $examid 考试ID
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* @param array $cookies Cookie数据
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* @return array
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*/
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public function batchGetPositionInfo(array $zwdmList, string $examid, array $cookies): array
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{
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$results = [];
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foreach ($zwdmList as $zwdm) {
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try {
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$info = $this->getPositionInfo($zwdm, $examid, $cookies);
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if (!empty($info)) {
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$results[] = $this->formatPositionInfo($info, $zwdm);
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}
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// 避免请求过快，添加小延迟
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usleep(200000); // 0.2秒
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} catch (\Exception $e) {
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// 记录错误但继续处理其他数据
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$results[] = [
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'zwdm' => $zwdm,
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'error' => $e->getMessage(),
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];
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}
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}
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return $results;
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}
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/**
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* 解析并验证Cookie数据
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* @param mixed $cookiesParam Cookie参数（可能是字符串或数组）
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* @return array
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* @throws \Exception
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*/
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public function parseCookies($cookiesParam): array
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{
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if (empty($cookiesParam)) {
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throw new \Exception('请填写Cookie数据');
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}
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// 解析JSON格式的cookies
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$cookies = is_string($cookiesParam) ? json_decode($cookiesParam, true) : $cookiesParam;
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if (json_last_error() !== JSON_ERROR_NONE || empty($cookies)) {
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throw new \Exception('Cookie数据格式错误，请检查JSON格式');
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}
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return $cookies;
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}
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/**
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* 计算最大公约数（GCD）
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* @param int $a
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* @param int $b
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* @return int
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*/
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private function gcd(int $a, int $b): int
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{
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while ($b != 0) {
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$temp = $b;
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$b = $a % $b;
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$a = $temp;
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}
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return $a;
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}
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/**
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* 计算竞争比（格式：1:比例，保留2位小数）
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* @param int $zprs 招聘人数
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* @param int $bkrs 审核通过人数
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* @return string
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*/
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private function calculateCompetitionRatio(int $zprs, int $bkrs): string
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{
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if ($zprs <= 0) {
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return '0:0';
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}
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if ($bkrs <= 0) {
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return '1:0';
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}
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// 将招聘人数简化为1，计算审核通过人数与招聘人数的比例
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$ratio = $bkrs / $zprs;
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// 保留2位小数
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$ratioFormatted = number_format($ratio, 2, '.', '');
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// 如果小数部分是.00，则显示为整数
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if (floatval($ratioFormatted) == intval($ratioFormatted)) {
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return '1:' . intval($ratioFormatted);
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}
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return '1:' . $ratioFormatted;
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}
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/**
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* 格式化职位信息（包含竞争比计算）
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* @param array $item 原始职位数据
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* @param string $zwdm 职位代码（备用）
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* @return array
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*/
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public function formatPositionInfo(array $item, string $zwdm = ''): array
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{
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// 处理单条数据或数组数据
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if (isset($item[0])) {
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$item = $item[0];
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}
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// 获取招聘人数和审核通过人数
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$zprs = isset($item['zprs']) ? intval($item['zprs']) : 0;
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$bkrs = isset($item['bkrs']) ? intval($item['bkrs']) : 0;
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// 计算竞争比（格式：1:比例，保留2位小数）
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$competitionRatio = $this->calculateCompetitionRatio($zprs, $bkrs);
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return [
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'sbmc' => $item['sbmc'] ?? '', // 省份
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'dsmc' => $item['dsmc'] ?? '', // 地区
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'zpdwmc' => $item['zpdwmc'] ?? '', // 招聘单位/用人司局
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'zwmc' => $item['zwmc'] ?? '', // 职位名称
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'zwdm' => $item['zwdm'] ?? $zwdm, // 职位代码
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'zprs' => $zprs, // 招聘人数
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'bkrs' => $bkrs, // 审核通过人数
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'competition_ratio' => $competitionRatio, // 竞争比（格式：1:比例，保留2位小数）
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];
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}
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/**
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* 构建Cookie字符串
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* @param array|string $cookies Cookie数组或字符串
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* @return string
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*/
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public function buildCookieString(array|string $cookies): string
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{
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// 如果直接传入原始Cookie字符串，优先使用
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if (is_string($cookies)) {
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return trim($cookies);
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}
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// 只保留用户填写的Cookie，支持同名键多值（如双JSESSIONID）
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$cookieData = $cookies['请求 Cookie'] ?? $cookies;
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$normalized = [];
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foreach ($cookieData as $key => $value) {
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$k = trim((string)$key);
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if ($k === '') {
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continue;
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}
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$vals = is_array($value) ? $value : [$value];
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foreach ($vals as $v) {
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$v = trim((string)$v);
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if ($v === '') {
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continue;
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}
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$normalized[$k][] = $v;
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}
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}
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// 将 JSESSIONID 放在最前（如果存在），其余按键名顺序，多值全部保留
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$parts = [];
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if (isset($normalized['JSESSIONID'])) {
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foreach ($normalized['JSESSIONID'] as $v) {
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$parts[] = 'JSESSIONID=' . $v;
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}
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unset($normalized['JSESSIONID']);
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}
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foreach ($normalized as $k => $vArr) {
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foreach ($vArr as $v) {
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$parts[] = $k . '=' . $v;
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}
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}
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return implode('; ', $parts);
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}
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/**
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* 从HTML中提取地区选项
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* @param string $html HTML内容
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* @return array
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*/
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public function extractDsdmOptions(string $html): array
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{
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$options = [];
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// 使用正则表达式提取option标签
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preg_match_all('/<option\s+value="([^"]+)"[^>]*>([^<]+)<\/option>/i', $html, $matches);
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if (!empty($matches[1])) {
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foreach ($matches[1] as $index => $value) {
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if (!empty($value)) { // 跳过"请选择"等空值
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$options[] = [
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'value' => $value,
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'text' => $matches[2][$index] ?? $value,
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];
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}
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}
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}
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return $options;
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}
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}
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