防止access_token失效法一（存redis里）

最新推荐文章于 2021-06-28 14:47:48 发布

原创最新推荐文章于 2021-06-28 14:47:48 发布 · 2.4k 阅读

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本文介绍了一个用于微信JS-SDK配置的PHP类，包括获取access_token、jsapi_ticket及生成signature的过程。通过连接Redis存储access_token和jsapi_ticket，减少API调用频率，提高效率。

<?php
namespace Index\Model;
use Think\Model;
class WeixinshareModel extends Model
{
    protected $trueTableName='kqy_video';
    const APPID = '***';
    const APPSECRET = '***';
    public $redis;
    function __construct()
    {
          $this->redis=new \redis();
          $this->redis->connect('127.0.0.1', 6379);
          $this->redis->auth('****');
         parent::__construct();
    }
    //获取access_token
    public function accessToken()
    {
          
         $access_token =$this->redis->get("weixin_access_token");//存入redis，这里要结合自己的项目，对redis或者memcahe进行设置
        if(!$access_token){
            $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".self::APPID."&secret=".self::APPSECRET;
            $data = json_decode($this->httpGet($url),true);
            if(isset($data['access_token']) && $data['access_token'] != ''){
                $this->redis->set("weixin_access_token",$data['access_token'],7200);
                $access_token=$data['access_token'];
            }else{
                return false;
            }
        }
        
        return $access_token;
    }
    //用第一步拿到的access_token 采用http GET方式请求获得jsapi_ticket
    public function jsapiTicket()
    {
         $jsapi_ticket =$this->redis->get("weixin_jsapi_ticket");
        if(!$jsapi_ticket){
            $access_token = $this->accessToken();
            if($access_token){
                $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=".$access_token."&type=jsapi";
                $data = json_decode($this->httpGet($url),true);
                if(isset($data['errcode']) && $data['errcode']== 0){//请求成功
                   $this->redis->set("weixin_jsapi_ticket",$data['ticket'],7200);
                   $jsapi_ticket=$data['ticket'];
                }else{
                    return false;
                }
            }else{
                return false;
            }
        }
       
        return $jsapi_ticket;
    }
    //获取signature
    public function signature($nonceStr,$timestamp,$url)
    {
        $jsapi_ticket = $this->jsapiTicket();
        $signature = '';
        if($jsapi_ticket) {
            $string = "jsapi_ticket=$jsapi_ticket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";
            $signature = sha1($string);//对string1进行sha1签名，得到signature
        }else{
            return false;
        }
       
        return $signature;
    }
    public function createNonceStr() {
        $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        $str = "";
        for ($i = 0; $i < 16; $i++) {
            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }
        return $str;
    }
    public function httpGet($url)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_TIMEOUT, 500);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_URL, $url);
        $res = curl_exec($curl);
        curl_close($curl);
        return $res;
    }

}