【SpringMVC】Marking servlet dispatcherServlet as unavailable org.apache.catalina.core.StandardContext.loadOnStartup Servlet [springDispatcherServlet] in web application [] threw load() exception

Marking servlet dispatcherServlet as unavailable  

org.apache.catalina.core.StandardContext.loadOnStartup Servlet [springDispatcherServlet] in web application [] threw load() exception Java.lang.ClassNotFoundException:

org.springframework.web.servlet.DispatcherServlet

除过jar包不存在外， 还有这种可能：

注：两种方式均已将jar包add buildpath

采用第一种存放jar包方式时，会出现以上java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet异常，浏览器中表现为404，改为第二种方式则正确运行。