webroot下的jsp中img src="/servlet/TopologyServlet
web.xml中也改了配置:
<servlet>
  <servlet-name>TopologyServlet</servlet-name>
  <servlet-class>com.Bmavweb.servlet.TopologyServlet</servlet-class>
 </servlet>
 <servlet-mapping>
  <servlet-name>TopologyServlet</servlet-name>
  <url-pattern>servlet/TopologyServlet</url-pattern>
 </servlet-mapping>
还是不能显示
/Bmavweb/src/com/Bmavweb/servlet/TopologyServlet.java这是文件的路径