ApacheProxyPass在HTTP请求中附加代理端口

我有一个带有URL的大摇大摆的用户界面：

webintegration请求通过Apache proxypass通过AWS ALB代理到后端服务器，配置如下

<VirtualHost *:80>
DocumentRoot        /internal/apache/www
ErrorLog            "logs/Mytestdomain.internal.net-error_log"
CustomLog           "logs/Mytestdomain.internal.net-access_log" combined
ServerName          Mytestdomain.internal.net
RewriteEngine   On

ProxyPreserveHost On
ProxyPass / http://internal-alb-app-237178657.us-east-1.elb.amazonaws.com:8081/ nocanon
ProxyPassReverse / http://internal-alb-app-237178657.us-east-1.elb.amazonaws.com:8081/
</VirtualHost>

DocumentRoot/internal/apache/www
ErrorLog“logs/Mytestdomain.internal.net-error\u log”
CustomLog“logs/Mytestdomain.internal.net-access\u log”组合
ServerName Mytestdomain.internal.net
重新启动发动机
代理主机
ProxyPass/http://internal-alb-app-237178657.us-east-1.elb.amazonaws.com:8081/ 诺卡农
ProxyPassReverse/http://internal-alb-app-237178657.us-east-1.elb.amazonaws.com:8081/

出于某种原因，当我单击swagger发送请求时，请求URL中还附加了端口。这有什么原因吗？早些时候，我们使用了AJP协议，但没有这个问题。后端应用程序在Tomcat上运行