在不同的Docker容器中运行的Spring Boot应用拒绝连接 [英] Connection refused by Spring boot app running in different docker container

问题描述

我在同一主机上的3个容器中运行了三个应用程序。

I have three apps running in 3 containers on the same host.

CONTAINER ID    IMAGE                       COMMAND               PORTS                    

3f938111c1bf    registration   "java -jar registration.jar"       0.0.0.0:8030->8030/tcp  
cb9c4782194e    security       "java -jar security.jar"           0.0.0.0:8020->8020/tcp  
60005507a246    main           "java -jar main.jar"               0.0.0.0:8000->8000/tcp   

我能够从主目录访问安全应用程序的端点使用Ajax请求的应用程序。

I am able to access an endpoint of the security app from main app using an Ajax request.

注册应用程序使用RestTemplate对象从Java方法中调用安全应用程序的端点。该调用被安全应用程序拒绝，如下所示。

The registration app calls an endpoint of security app from a java method using a RestTemplate object. This call is refused by the security app as follows.

I/O error on POST request for "http://localhost:8020/security/register": Connect to localhost:8020 [localhost/127.0.0.1] failed: Connection refused (Connection refused); nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8020 [localhost/127.0.0.1] failed: Connection refused (Connection refused)

我无法识别问题。 请注意，当我通过eclipse在本地运行这些应用程序时，此调用工作正常。

我对Docker来说很陌生。我有可能遗漏某些东西吗？任何线索都将有所帮助。

I am very new to the dockers. Is there a possibility that I am missing out something? Any leads would be helpful.

非常感谢！

推荐答案

使用Docker容器时/ images，因此您需要在其上设置配置。因此，您必须将localhost更改为您的容器名称。例如：

When you work with docker containers/images so you need to set your configurations on them. So you must change localhost to your container name. For example:

 http://localhost:8020/security/register

 http://authentication:8020/security/register

这篇关于在不同的Docker容器中运行的Spring Boot应用拒绝连接的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！