从本地IDE（Eclipse）与Slack连接时，我遇到了异常：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'slackBot': Invocation of init method failed;
nested exception is
org.springframework.web.client.ResourceAccessException: I/O error on
GET request for "https://slack.com/api/rtm.connect": slack.com; nested
exception is java.net.UnknownHostException: slack.com
我也在组织Eclipse环境中使用代理服务器。
要解决此错误，我还需要更改或添加什么？