php调用phantomjs给微信小程序分享

摘要：背景之前已经使用写过调用的文章不让我使用所以只好使用调用上的包功能很冗余我只需要用到的截图功能知识储备系统安装权限相关知识基本语法知识函数调用截图文档代码代码环境为框架获取参数中文件的决定路径获取有权限的临时文件目录获取有权限的临时文件目

之前已经使用golang写过调用phantomjs的文章

CTO不让我使用golang所以只好使用php调用phantomjs

packagist上的composer包功能很冗余,我只需要用到phantomjs的截图功能

*unix系统安装phantomjs,权限相关知识

基本JavaScript语法知识

php exec函数调用REPL phantomjs

phantomjs js截图文档 http://javascript.ruanyifeng....

js_path = "{$dir}/script.js";
        /** @var bool|string 获取php 有777权限的临时文件目录 */
        $this->temp_dir = Yii::getAlias("@runtime");
    }

    /**
     * 截图并上传
     * @param string $url
     * @param string $filename
     * @return string
     * @throws BizException
     */
    public function screenShotThenSaveToOss(string $url, string $filename = "temp.jpg")
    {
        //输出图片的路径
        $outputFilePath = "{$this->temp_dir}/$filename";
        //执行的phantomjs命令
        //phantomjs 可执行文件必须是 绝对路径 否则导致 exec 函数返回值127错误
        $cmd = "usrlocalinphantomjs {$this->js_path} "$url" "$outputFilePath"";
        //捕捉不到phantomjs命令输出结果
        exec($cmd, $output);
        //检查截图文件是否存在
        $isShotImgaeExist = file_exists($outputFilePath);
        if (!$isShotImgaeExist) {
            throw new BizException(0, "phantomjs截图失败", BizException::SELF_DEFINE);
        }
        //保存截图到oss
        $result = $this->postScreenShotImageToOss($outputFilePath);
        //删除临时文件夹的截图图片
        unlink($outputFilePath);
        return $result;
    }


    /**
     * 上传截图到阿里云直传oss
     * @param string $screenshot_path
     * @return string
     */
    public function postScreenShotImageToOss(string $screenshot_path): string
    {
        $ossKey = "raw_file_name";

        $file = new CURLFile($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->url;
        }
    }

    /**
     * 调用管理后台阿里云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();
//设置phantomjs的浏览器user-agent
page.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";

//获取php exec 函数的命令行参数
if (system.args.length !== 3) {
    console.log(system.args);
    console.log("参数错误");
    console.log("第2个参数为url地址 第3个参数为截图文件名称");
    phantom.exit(1);
}

//命令行 截图网址参数
var url = system.args[1];
//图片输出路径
var filePath = system.args[2];
console.log("-------");
console.log(url);
console.log("-------");
console.log(filePath);
console.log("-------");

//设置浏览器视口
page.viewportSize = {width: 480, height: 960};
//打开网址
page.open(url, function start(status) {
    //1000ms之后开始截图
    setTimeout(function () {
        //截图格式为jpg 80%的图片质量
        page.render(filePath, {format: "jpg", quality: "80"});
        console.log("success");
        //退出phantomjs 避免phantomjs导致内存泄露
        phantom.exit();
    }, 1000);
});