Servlet和JSP规范及版本对应关系

JSR 53: Java^TM Servlet 2.3 and JavaServer Pages^TM 1.2

JSR 154: Java^TM Servlet 2.4

JSR 154: Java^TM Servlet 2.5(Maintenance Release 2)

JSR 315: Java^TM Servlet 3.0（This JSR will be an update to the existing Servlet 2.5 specification. ）

JSR 152: JavaServer Pages^TM 2.0

JSR 245: JavaServer^TM Pages 2.1

JSR 127: JavaServer^TM Faces

JSR 252: JavaServer^TM Faces 1.2

JSR 314: JavaServer^TM Faces 2.0

Servlet和JSP规范版本对应关系：

Servlet规范版本	JSP版本	JSF版本	JAVA EE版本
Servlet2.3	JSP1.2、JSP1.1		J2EE1.3
Servlet2.4	JSP2.0	JSF1.1	J2EE1.4
Servlet2.5	JSP2.1	JSF1.2、JSF2.0	Java EE5
Servlet3.0	JSP2.2		Java EE6

Tomcat所对应的Servlet/JSP规范和JDK版本：

Servlet/JSP Spec	Apache Tomcat version	Actual release revision	Minimum Java Version
3.0/2.2	7.0.x	7.0.12	1.6
2.5/2.1	6.0.x	6.0.32	1.5
2.4/2.0	5.5.x	5.5.33	1.4
2.3/1.2	4.1.x (archived)	4.1.40 (archived)	1.3
2.2/1.1	3.3.x (archived)	3.3.2 (archived)	1.1

Apache官方对各版本的解释

Servlet Spec	JSP Spec	EL Spec	WebSocket Spec	Apache Tomcat version	Actual release revision	Support Java Versions
4.0	TBD (2.4?)	TBD (3.1?)	TBD (1.2?)	9.0.x	None	8 and later
3.1	2.3	3.0	1.1	8.0.x	8.0.15	7 and later
3.0	2.2	2.2	1.1	7.0.x	7.0.57	6 and later (WebSocket 1.1 requires 7 or later)
2.5	2.1	2.1	N/A	6.0.x	6.0.43	5 and later
2.4	2.0	N/A	N/A	5.5.x (archived)	5.5.36 (archived)	1.4 and later
2.3	1.2	N/A	N/A	4.1.x (archived)	4.1.40 (archived)	1.3 and later
2.2	1.1	N/A	N/A	3.3.x (archived)	3.3.2 (archived)	1.1 and later