There is no Action mapped for namespace / and action name AjaxServlet. - [unknown location]
?
原因：web.xml中配置struts拦截为/*，AjaxServlet被拦截掉
<filter>
? ?<filter-name>struts2</filter-name>
? ?<filter-class>
? ?org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
? ?</filter-class>
? </filter>
? <filter-mapping>
? ?<filter-name>struts2</filter-name>
? ?<url-pattern>/*</url-pattern>
? </filter-mapping>
?
?<servlet>
??? <description></description>
??? <display-name>AjaxServlet</display-name>
??? <servlet-name>AjaxServlet</servlet-name>
??? <servlet-class>org.CollegePro.ssh.web.servlet.AjaxServlet</servlet-class>
? </servlet>
? <servlet-mapping>
??? <servlet-name>AjaxServlet</servlet-name>
??? <url-pattern>/AjaxServlet</url-pattern>
? </servlet-mapping>
?
解决办法：修改struts的过滤器设置，如下。只对.aciton结尾的请求和.jsp结尾请求过滤，这样就可以保证Ajax的过滤器能正常使用。
? <filter>
? ?<filter-name>struts2</filter-name>
? ?<filter-class>
? ?org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
? ?</filter-class>
? </filter>
? <filter-mapping>
? ?<filter-name>struts2</filter-name>
? ?<url-pattern>*.action</url-pattern>
? </filter-mapping>
?? <filter-mapping>
? ?<filter-name>struts2</filter-name>
? ?<url-pattern>*.jsp</url-pattern>
? </filter-mapping>