程序运行没有获取到图片和课程信息，如图所示：

我截取的认为重要的控制台打印信息如下：

22988 [qtp1095203437-15] WARN  org.springframework.web.servlet.PageNotFound  - No mapping found for HTTP request with URI [/$%7Bcourse.imgPath%7D] in DispatcherServlet with name 'mvc-dispatcher'

22988 [qtp1095203437-15] WARN  org.springframework.web.servlet.PageNotFound  - No mapping found for HTTP request with URI [/$%7Bcourse.imgPath%7D] in DispatcherServlet with name 'mvc-dispatcher'

380997 [qtp1095203437-17] DEBUG org.springframework.web.servlet.DispatcherServlet  - Null ModelAndView returned to DispatcherServlet with name 'mvc-dispatcher': assuming HandlerAdapter completed request handling

380997 [qtp1095203437-17] DEBUG org.springframework.web.servlet.DispatcherServlet  - Null ModelAndView returned to DispatcherServlet with name 'mvc-dispatcher': assuming HandlerAdapter completed request handling

这是什么问题？