调用微信jssk PHP版结合tp5 前端使用

最新推荐文章于 2022-12-08 18:42:53 发布

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#微信分享 #jssdk #php #tp5

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本文介绍如何在ThinkPHP5(TP5)框架中整合并使用微信JSSDK，实现微信分享功能。文章详细讲解了配置、签名生成及前端调用流程。

调用微信jssk PHP版结合tp5 前端使用

下载官方jssdk demo，修改部分地方

修改了文件路劲改为变量参数传递

修改了接收分享的url地址，改为前端传参赋值，生成签名需要传入当前网页的url

<?php
class JSSDK {
  private $appId;
  private $appSecret;
  private $accessTokenFile = 'extra/access_token.php';
  private $jsapiTicketFile = 'extra/jsapi_ticket.php';

  public function __construct($appId, $appSecret) {
    $this->appId = $appId;
    $this->appSecret = $appSecret;
  }

  public function getSignPackage() {
    $jsapiTicket = $this->getJsApiTicket();

    // 注意 URL 一定要动态获取，不能 hardcode.
    $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
    // fixed 写成接口，接收分享的url
    $url = (!empty($_GET['url'])) ? $_GET['url'] : (!empty($_POST['url'])) ? $_POST['url'] : "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

    $timestamp = time();
    $nonceStr = $this->createNonceStr();

    // 这里参数的顺序要按照 key 值 ASCII 码升序排序
    $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";

    $signature = sha1($string);

    $signPackage = array(
      "appId"     => $this->appId,
      "nonceStr"  => $nonceStr,
      "timestamp" => $timestamp,
      "url"       => $url,
      "signature" => $signature,
      "rawString" => $string
    );
    return $signPackage;
  }

  private function createNonceStr($length = 16) {
    $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    $str = "";
    for ($i = 0; $i < $length; $i++) {
      $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
    }
    return $str;
  }

  private function getJsApiTicket() {
    // jsapi_ticket 应该全局存储与更新，以下代码以写入到文件中做示例
    $data = json_decode($this->get_php_file($this->accessTokenFile));
    if ($data->expire_time < time()) {
      $accessToken = $this->getAccessToken();
      // 如果是企业号用以下 URL 获取 ticket
      $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken";
      // $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
      $res = json_decode($this->httpGet($url));
      $ticket = $res->ticket;
      if ($ticket) {
        $data->expire_time = time() + 7000;
        $data->jsapi_ticket = $ticket;
        $this->set_php_file($this->accessTokenFile, json_encode($data));
      }
    } else {
      $ticket = $data->jsapi_ticket;
    }

    return $ticket;
  }

  private function getAccessToken() {
    // access_token 应该全局存储与更新，以下代码以写入到文件中做示例
    $data = json_decode($this->get_php_file($this->accessTokenFile));
    if ($data->expire_time < time()) {
      // 如果是企业号用以下URL获取access_token
      // $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
      $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
      $res = json_decode($this->httpGet($url));
      $access_token = $res->access_token;
      if ($access_token) {
        $data->expire_time = time() + 7000;
        $data->access_token = $access_token;
        $this->set_php_file($this->accessTokenFile, json_encode($data));
      }
    } else {
      $access_token = $data->access_token;
    }
    return $access_token;
  }

  private function httpGet($url) {
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_TIMEOUT, 500);
    // 为保证第三方服务器与微信服务器之间数据传输的安全性，所有微信接口采用https方式调用，必须使用下面2行代码打开ssl安全校验。
    // 如果在部署过程中代码在此处验证失败，请到 http://curl.haxx.se/ca/cacert.pem 下载新的证书判别文件。
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, true);
    curl_setopt($curl, CURLOPT_URL, $url);

    $res = curl_exec($curl);
    curl_close($curl);

    return $res;
  }

  private function get_php_file($filename) {
    return trim(substr(file_get_contents($filename), 15));
  }
  private function set_php_file($filename, $content) {
    $fp = fopen($filename, "w");
    fwrite($fp, "<?php exit();?>" . $content);
    fclose($fp);
  }
}

整合到tp5 配置

把jssdk.php 文件放到tp5的第三方扩展目录 extend
把access_token.php jsapi_ticket.php 文件放到extra目录，同事修改jssdk.php中欧读写文件路劲，改为
extra/access_toke.php extra/api_ticket.php

在 application 目录下的 extra 目录配置公众号appid

<?php
/*
 * @Author: HotSuitor
 * @Date: 2018-12-21 17:01:02
 * @LastEditors: qw
 * @LastEditTime: 2018-12-21 17:02:01
 * @Description: hotsuitor@qq.com
 */

 date_default_timezone_set('PRC');

 $jssdk = [
   'appid' => 'wx4ba7a4e323423',
   'appSecret' => '4234c065w9813495ewc02e2'
 ];

 return  $jssdk;

编写调用签名接口

<?php

namesapce app\index\controller;

use think\Controller;

 /**
 * @msg: 获取微信签名
 * @param {type}
 * @return:
 */
public function getSignaPackage() {
    $result = [
        'code' => 204,
        'data' => [],
        'msg' => 'fail get signature sucess'
      ];

    $importFlag = import('jssdk', EXTEND_PATH);
    if($importFlag) {
        $jssdk = new \JSSDK(config('jssdk.appid', config('jssdk.appSecret'));
        $signPackage = $jssdk->getSignPackage();
        if($signPackage) {
             $result = [
            'code' => 200,
            'data' => $signPackage,
            'msg' => 'get signature success'
          ];
        }
    }
    
    // 自行配置跨域头
    header('Access-Control-Allow-Origin: *');
    header('Control-Type: application/json');
    return json($result);
}

测试接口

就算接口请求签名返回成功，也要在微信开发者调试，测试是否调用是否成功

生成签名必须传递url，不然签名生成也是错误的签名，无法成功调用微信分享

页面调用jssdk

如果是后端模板渲染，微信的appid可以不用修改

如果不是，写入调用接口的签名

 //继承baseController已实现jssdk加密
  wx.config({
    debug: false,
    appId: '<?php echo $signPackage["appId"];?>',
    timestamp: '<?php echo $signPackage["timestamp"];?>',
    nonceStr: '<?php echo $signPackage["nonceStr"];?>',
    signature: '<?php echo $signPackage["signature"];?>',
    jsApiList: [
      // 所有要调用的 API 都要加到这个列表中
      'chooseImage', 'uploadImage', 'onMenuShareTimeline', 'hideOptionMenu', 'showMenuItems',
      'onMenuShareAppMessage'
    ]
  });
  wx.ready(function () {
    wx.onMenuShareAppMessage({
      title: "{$site_info['share_title']}", // 分享标题
      desc: "{$site_info['share_desc']}", // 分享描述
      link: "", // 分享链接
      imgUrl: "{$site_info['share_img_url']}", // 分享图标
      type: '', // 分享类型,music、video或link，不填默认为link
      dataUrl: '', // 如果type是music或video，则要提供数据链接，默认为空
      success: function success() {
        weui.toast('分享成功');
      },
      cancel: function cancel() { }
    });
    wx.onMenuShareTimeline({
      title: "{$site_info['share_title']}", // 分享标题
      desc: "{$site_info['share_desc']}", // 分享描述
      link: "", // 分享链接
      imgUrl: "{$site_info['share_img_url']}", // 分享图标
      success: function success() {
        weui.toast('分享成功');
      },
      cancel: function cancel() { }
    });
  });