严重: End event threw exception java.lang.reflect.InvocationTargetException
严重: End event threw exception java.lang.reflect.InvocationTargetException

at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)

……

Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> servlet/item/ShowAddItemServlet in servlet mapping



严重: Parse error in application web.xml file at jndi:/localhost/drp3.6/WEB-INF/web.xml

java.lang.IllegalArgumentException: Invalid <url-pattern> servlet/item/ShowAddItemServlet in servlet mapping

at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2806)

……



错误原因：非法的<url-pattern>表达式

应将<url-pattern> servlet/item/ShowAddItemServlet

改为：<url-pattern> /servlet/item/ShowAddItemServlet

即如果有虚拟的文件夹，那么文件夹前要加斜杠“/”



<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.do</url-pattern>//这里不要前面的 '/'
</servlet-mapping>

我的异常网推荐解决方案：Servlet.service() for servlet default threw exception,http://www.myexception.cn/eclipse/181756.html