Question

我用maven创建了一个netbeans web项目，但是当我启动tomcat时它给了我这个错误：

nameof(Exception)

错误是什么？在此先感谢：）

编辑：这是web.xml部署描述符

    14-Dec-2016 00:08:37.611 SEVERE [http-nio-8084-exec-8] org.apache.catalina.core.ApplicationContext.log Error during mapping
 java.lang.NullPointerException
    at org.apache.catalina.mapper.Mapper.internalMapWrapper(Mapper.java:842)
    at org.apache.catalina.mapper.Mapper.map(Mapper.java:712)
    at org.apache.catalina.core.ApplicationContext.getRequestDispatcher(ApplicationContext.java:499)
    at org.apache.catalina.core.ApplicationContextFacade.getRequestDispatcher(ApplicationContextFacade.java:221)
    at org.apache.catalina.core.ApplicationHttpRequest.getRequestDispatcher(ApplicationHttpRequest.java:303)
    at javax.servlet.ServletRequestWrapper.getRequestDispatcher(ServletRequestWrapper.java:291)...and other exceptions

启动时的tomcat空指针

0 个答案: