公众号支付

addons/epay/config.php

@@ -8,7 +8,7 @@ return [
         'content' => [],
         'value' => [
             'appid' => 'wx69fb4525c9156250',
-            'app_id' => '',
+            'app_id' => 'wx1aded5599770e18a',
             'app_secret' => '50672a30e50a0a0af2f4d64eaebedc06',
             'miniapp_id' => '',
             'mch_id' => '1618172696',

addons/epay/library/Wechat.php

@@ -107,4 +107,108 @@ class Wechat
         }
         return $jsticket;
     }
+
+    public function getSignPackage($url) {
+        $jsapiTicket = $this->getWechatJsApiTicket();
+
+        // 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://";
+//    $url = $this->url?$this->url:"$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
+        $timestamp = time();
+        $nonceStr = $this->getRandString(16);
+
+        // 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->app_id,
+            "nonceStr"  => $nonceStr,
+            "timestamp" => $timestamp,
+            "url"       => $url,
+            "signature" => $signature,
+            "rawString" => $string
+        );
+        return $signPackage;
+    }
+
+    /**
+     * 获取微信基础access_token
+     * @param bool $updatenow 是否立即刷新
+     * @return string
+     */
+    public function getWechatBasicAccesstoken($updatenow = false)
+    {
+        //有效期一般为7200秒，开发者必须在自己的服务全局缓存access_token
+        //此处保存的access_token为基础的，并非授权的(授权的需要实时获取)
+
+        //读取缓存
+        $access_token = cache('access_token');
+
+        //过期或强制刷新时，需重新请求
+        if(!$access_token || $updatenow) {
+            $rs = json_decode(curl_get('https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.$this->app_id.'&secret='.$this->app_secret), true);
+            if(!empty($rs['errmsg'])) {
+                abort(500, $rs['errmsg']); //请求失败
+            }
+
+            //缓存存储
+            $access_token = $rs['access_token'];
+            cache('access_token', $access_token, $rs['expires_in'] - 1000);
+        }
+
+        return $access_token;
+    }
+
+    /**
+     * 获取微信jsapi_ticket
+     * @param string $updatenow 是否立即更新
+     * @return string
+     */
+    private function getWechatJsApiTicket($updatenow = false)
+    {
+        //有效期7200秒，开发者必须在自己的服务全局缓存jsapi_ticket
+
+        //读取缓存
+        $ticket = cache('jsapi_ticket');
+
+        //过期或强制刷新时，需重新请求
+        if(!$ticket || $updatenow) {
+            //读取access_token
+            $access_token = $this->getWechatBasicAccesstoken();
+
+            //请求ticket
+            $rs = json_decode(curl_get('https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token='.$access_token.'&type=jsapi'), true);
+            if($rs['errmsg'] != 'ok') { //失败时，强制刷新access_token，再次请求
+                $access_token = $this->getWechatBasicAccesstoken(true);
+                $rs = json_decode(curl_get('https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token='.$access_token.'&type=jsapi'), true);
+                if($rs['errmsg'] != 'ok') {
+                    abort(500, $rs['errmsg']); //请求失败
+                }
+            }
+
+            //缓存存储
+            $ticket = $rs['ticket'];
+            cache('jsapi_ticket', $ticket, $rs['expires_in'] - 1000);
+        }
+
+        return $ticket;
+    }
+
+    /**
+     * 获取随机字符串
+     * @param int $length 字符串长度
+     * @return null|string
+     */
+    private function getRandString($length = 1)
+    {
+        $str = null;
+        $strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
+        $max = strlen($strPol) - 1;
+        for($i = 0; $i < $length; $i++) {
+            $str .= $strPol[rand(0, $max)];
+        }
+        return $str;
+    }
 }

application/api/controller/User.php

@@ -14,6 +14,9 @@ use think\Db;
 use app\common\model\UserDeviceInfo;
 use onlogin\onlogin;
 
+use addons\epay\library\Service;
+use addons\epay\library\Wechat;
+
 /**
  * 会员接口，登录，注册，修改资料等
  */
@@ -1006,4 +1009,26 @@ class User extends Api
         }
         return $crytxt;
     }
+
+    //公众号获取openid
+    public function getUserOpenid_gzh(){
+        $configValue = Service::getConfig('wechat');
+
+        $wechat = new Wechat($configValue['app_id'],$configValue['app_secret']);
+        $rs = $wechat->getOpenid();
+        $this->success('success',$rs);
+    }
+    /**
+     * 微信内H5-JSAPI支付
+     */
+    public function jssdkBuildConfig() {
+        $url = $this->request->request("url");
+
+        $configValue = Service::getConfig('wechat');
+        $wechat = new Wechat($configValue['app_id'],$configValue['app_secret']);
+
+        $sign = $wechat->getSignPackage(urldecode($url));
+        $this->success("获取成功！",$sign);
+    }
+
 }