this之後要加點

早上在try Java的時候發現this後面要加點，不然Eclipse會出現錯誤訊息

javax.servlet.FilterChain is a restricted class. Please see the Google App Engine developer's guide for more details.

解決方法移除将JDK/lib/ext/servlet-api.jar移出目錄即可。 http://blog.tonycube.com/2010/05/gae-java-servlet-error.html