*unix系統安裝phantomjs,權限相關知識

基本JavaScript語法知識

php exec函數調用REPL phantomjs

phantomjs js截圖文檔 http://javascript.ruanyifeng....

 ?phpnamespace weapp/library/phantomjs;use weapp/library/BizException;class ScreenShot /** @var string 獲取phantomjs 參數中 js文件的決定路徑 */ private $js_path; /** @var bool|string 獲取php 有777權限的臨時文件目錄 */ private $temp_dir; function __construct() $dir = __DIR__; $this- js_path = {$dir}/script.js  /** @var bool|string 獲取php 有777權限的臨時文件目錄 */ $this- temp_dir = /Yii::getAlias( @runtime  * 截圖并上傳 * @param string $url * @param string $filename * @return string * @throws BizException public function screenShotThenSaveToOss(string $url, string $filename = temp.jpg ) //輸出圖片的路徑 $outputFilePath = {$this- temp_dir}/$filename  //執行的phantomjs命令 //phantomjs 可執行文件必須是 絕對路徑 否則導致 exec 函數返回值127錯誤 $cmd = /usr/local/bin/phantomjs {$this- js_path} $url $outputFilePath  //捕捉不到phantomjs命令輸出結果 exec($cmd, $output); //檢查截圖文件是否存在 $isShotImgaeExist = file_exists($outputFilePath); if (!$isShotImgaeExist) { throw new BizException(0, phantomjs截圖失敗 , BizException::SELF_DEFINE); //保存截圖到oss $result = $this- postScreenShotImageToOss($outputFilePath); //刪除臨時文件夾的截圖圖片 unlink($outputFilePath); return $result;
 $file = new /CURLFile($screenshot_path, image/jpeg , file  $tokenArray = $this- getOssPolicyToken( fetch  $url = $tokenArray- host; $postData = [ key = {$tokenArray- dir}/$ossKey , policy = $tokenArray- policy, OSSAccessKeyId = $tokenArray- accessid, success_action_status = 200 , signature = $tokenArray- signature, callback = $tokenArray- callback, file = $file $ch = curl_init(); //$data = array( name = Foo , file = @/home/user/test.png  curl_setopt($ch, CURLOPT_URL, $url); // Disable SSL verification curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_SAFE_UPLOAD, true); // required as of PHP 5.6.0 curl_setopt($ch, CURLOPT_POSTFIELDS, $postData); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_TIMEOUT, 20); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20); //curl_setopt($ch, CURLOPT_HTTPHEADER, [ Content-Type: $mime_type ]); $res = curl_exec($ch); $res = json_decode($res); curl_close($ch); if (empty($res) || $res- code != 0) { return  } else { return $res- data-  * 調用管理后臺阿里云oss token接口 * @param null $url * @return array public function getOssPolicyToken($url = null) $url = /Yii::$app- params[ oss_screen_shot_token_api  $ch = curl_init(); // Disable SSL verification curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // Will return the response, if false it print the response curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // Set the url curl_setopt($ch, CURLOPT_URL, $url); // Execute $result = curl_exec($ch); // Closing curl_close($ch); $res = json_decode($result); if (empty($res) || $res- code != 0) { return []; } else { return $res- data;}

 use strict var system = require( system var webPage = require( webpage var page = webPage.create();//設置phantomjs的瀏覽器user-agentpage.settings.userAgent = Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1 //獲取php exec 函數的命令行參數if (system.args.length !== 3) { console.log(system.args); console.log( 參數錯誤  console.log( 第2個參數為url地址 第3個參數為截圖文件名稱  phantom.exit(1);//命令行 截圖網址參數var url = system.args[1];//圖片輸出路徑var filePath = system.args[2];console.log( ------- console.log(url);console.log( ------- console.log(filePath);console.log( ------- //設置瀏覽器視口page.viewportSize = {width: 480, height: 960};//打開網址page.open(url, function start(status) { //1000ms之后開始截圖 setTimeout(function () { //截圖格式為jpg 80%的圖片質量 page.render(filePath, {format: jpg , quality: 80  console.log( success  //退出phantomjs 避免phantomjs導致內存泄露 phantom.exit(); }, 1000);});

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