Spring mvc项目导出jar包无法识别正常映射问题

笔者的代码很简单，平常的配置文件，web.xml如下

 <servlet>
       <!--名称 -->
       <servlet-name>springmvc</servlet-name>
       <!-- Servlet类 -->
       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
       <init-param>
           <!--SpringMVC配置参数文件的位置 -->
           <param-name>contextConfigLocation</param-name>
           <!--默认名称为ServletName-servlet.xml -->
           <param-value>classpath*:springmvc-servlet.xml</param-value>
       </init-param>
       <!-- 启动顺序，数字越小，启动越早 -->
       <load-on-startup>1</load-on-startup>
   </servlet>

   <!--所有请求都会被springmvc拦截 -->
   <servlet-mapping>
       <servlet-name>springmvc</servlet-name>
       <url-pattern>/frontend/*</url-pattern>
   </servlet-mapping>

myeclipse开发项目,按照常规方法右键项目 Export-->jar却不能执行。

网上说注解的@Controller不能在jar中工作，后来在stackoverflow找到了答案:

Spring Annotation-based controllers not working if it is inside jar file

解决方法:导出jar文件时勾选下面的:Add directory entries复选框

When you export the jar file using the export utility in eclipse there is a option called Add directory entries. Check this option and export the jar file, this will solve the problem.

其他参考信息:

why spring mvc not able to read URL from controller class kept in jar file

@Controller not working when packaged in external jar