Spring Boot 应用启动失败：找不到类 club.mrxiao.gps.GpsApplication

"Servlet.service() for servlet [dispatcherServlet] in context with path [\] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: java.lang.ClassNotFoundException: club.mrxiao.gps.GpsApplication] with root cause"。该异常表明在路径为[\]的上下文中，Servlet [dispatcherServlet]的Servlet.service()方法抛出了异常，根本原因是找不到类club.mrxiao.gps.GpsApplication。