fix

app/Http/Services/SupplierSearchTagService.php

@@ -45,7 +45,7 @@ class SupplierSearchTagService
             $channel = $conn->channel();
             $channel->queue_declare('supplier_zhuanmai_update', false, true, false, false);
 
-            $msg = new AMQPMessage(json_encode($message),
+            $msg = new AMQPMessage($message,
                 array('content_type' => 'text/plain'));
             $result = $channel->basic_publish($msg, '', 'supplier_zhuanmai_update');
         }