tomcat各版本与jdk及servlet各版本对应关系

在项目部署的时候，如果对于Web应用没有选择正确的Web服务器版本，应用可能不能正常运行。下图为官方给的Servlet/JSP各规范与Web服务器Tomcat各版本的对应关系，如：支持Servlet 3.1、JSP 2.3规范的Web服务器为Tomcat 8.0.X

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.M4 (alpha)	8 and later
3.1	2.3	3.0	1.1	1.1	8.5.x	8.5.0 (beta)	7 and later
3.1	2.3	3.0	1.1	N/A	8.0.x	8.0.33	7 and later
3.0	2.2	2.2	1.1	N/A	7.0.x	7.0.69	6 and later (7 and later for WebSocket)
2.5	2.1	2.1	N/A	N/A	6.0.x	6.0.45	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