项目启动时报错：Illegal access: this web application instance has been stopped already

 原因其实是因为某个bean没有被注入成功，我光看了控制台的报错是 this web application instance has been stopped already，其实在localhost log文件中显示的错误是：org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'XXX' available: expected at least 1 bean which qualifies as autowire candidate.

解决办法：在配置文件中配置这个bean，使这个bean能够被成功注入。