admin后台启动后Web页面无法访问

在idea下启动admin后台，从后台看的启动是正常的，只有一个如下警告，即， WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification. 但是在谷歌浏览器页面，访问路径:http://localhost:8080/admin 则web页面出现了如下的显示问题： Whitelabel Error Page This application has no explicit mapping for /error, so you are seeing this as a fallback. Wed Oct 17 14:42:06 CST 2018 There was an unexpected error (type=Not Found, status=404). No message available