Web服务器无法启动；嵌套异常是Spring Boot Web服务器的异常类型

2020-11-27 16:53:38.979 错误 5408 — [ main] o.s.boot.SpringApplication : 应用程序启动失败

org.springframework.context.ApplicationContextException: 无法启动网络服务器；嵌套异常是 org.springframework.boot.web.server.WebServerException: 无法启动内嵌的 Tomcat
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:157)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationCo