tomcat/jsp/servlet版本关系

 

Servlet Spec	JSP Spec	EL Spec	WebSocket Spec	JASPIC Spec	Apache Tomcat version	Actual release revision	Supported Java Versions
4.0	TBD (2.4?)	TBD (3.1?)	TBD (1.2?)	1.1	9.0.x	9.0.0.M11 (alpha)	8 and later
3.1	2.3	3.0	1.1	1.1	8.5.x	8.5.6	7 and later
3.1	2.3	3.0	1.1	N/A	8.0.x (superseded)	8.0.38 (superseded)	7 and later
3.0	2.2	2.2	1.1	N/A	7.0.x	7.0.72	6 and later (7 and later for WebSocket)
2.5	2.1	2.1	N/A	N/A	6.0.x	6.0.47	5 and later
2.4	2.0	N/A	N/A	N/A	5.5.x (archived)	5.5.36 (archived)	1.4 and later
2.3	1.2	N/A	N/A	N/A	4.1.x (archived)	4.1.40 (archived)	1.3 and later
2.2	1.1	N/A	N/A	N/A	3.3.x (archived)	3.3.2 (archived)	1.1 and later

 

来源：http://tomcat.apache.org/whichversion.html

 

web.xml示例：

http://www.mkyong.com/web-development/the-web-xml-deployment-descriptor-examples/
or
http://blog.csdn.net/ceclar123/article/details/38173755