解决 二次提交 小程序不能支付的问题

Laravel/app/Http/Controllers/API/H5/OrderController.php

@@ -266,7 +266,7 @@ class OrderController extends Controller
     }
   }
 
-  function generateOrderNumber()
+  public function generateOrderNumber()
   {
     // 获取当前时间的时间戳（精确到毫秒）
     $timestamp = round(microtime(true) * 1000);

Laravel/app/Http/Controllers/API/H5/PayController.php

@@ -48,12 +48,18 @@ class PayController extends Controller
       $sub_org_code = 2;
     }
     if ($sub_org_code == 0) return \Yz::echoError1("医院id异常");
+    //每次支付前更新订单号为1个新订单号码
+    $randomPart = substr(str_shuffle("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"), 0, 6);
+    $new_ordernumber=substr($orderInfo->order_number, 0, -6);
+    $new_ordernumber=$new_ordernumber.$randomPart;
+    $u=DB::table('orders')->where(['id' => $id,])->update(['order_number'=>$new_ordernumber]);
+    if(!$u) return \Yz::echoError1("更新订单号失败");
     $XCXApi = new XCXApiController();
     $params = [
       'appid' => $XCXApi::$appid,
       'sub_org_code' => $sub_org_code,
       'ghzid' => $personInfo->ghzid,
-      'orderid' => $orderInfo->order_number,
+      'orderid' => $new_ordernumber,
       'order_desc' => $orderInfo->title,
       'amount' => (int)($orderInfo->true_price * 100),
       'notify_url' => config('app.globals.PayNotifyUrl')