接收公司、员工变动消息推送bug修复

Myshipping.Core/MQ/RecCompanyUserChangeService.cs

@@ -58,7 +58,13 @@ namespace Myshipping.Core.MQ
 
                 ConnectionFactory factory = new ConnectionFactory();
                 var repoSysCfg = _serviceScope.ServiceProvider.GetService<SqlSugarRepository<SysConfig>>();
-                var mqUrl = repoSysCfg.FirstOrDefault(x => x.Code == "CompanyUserChangeMqUrl").Value;
+                var mqUrl = repoSysCfg.FirstOrDefault(x => x.Code == "CompanyUserChangeMqUrl")?.Value;
+                if (string.IsNullOrEmpty(mqUrl))
+                {
+                    _logger.LogError($"接收公司、员工变动消息推送所需MQUrl未配置");
+                }
+                else
+                {
                     _logger.LogInformation($"准备连接公司用户同步消息队列：{mqUrl}");
                     factory.Uri = new Uri(mqUrl);
                     mqConn = factory.CreateConnection("客户订舱平台客户端");
@@ -71,8 +77,7 @@ namespace Myshipping.Core.MQ
                     var consumer = new EventingBasicConsumer(model);
                     consumer.Received += Consumer_Received;
                     model.BasicConsume(QueueName, true, consumer);
-
-
+                }
             });
 
         }