Servlet Api 和 JavaServerPage Version
| Servlet API version | Released | Platform | Important Changes |
|---|---|---|---|
| Servlet 3.0 | December 2009 | JavaEE 6, JavaSE 6 | Pluggability, Ease of development, Async Servlet, Security, File Uploading |
| Servlet 2.5 Jsp2.1 | September 2005 | JavaEE 5, JavaSE 5 | Requires JavaSE 5, supports annotation |
| Servlet 2.4 Jsp2.0 | November 2003 | J2EE 1.4, J2SE 1.3 | web.xml uses XML Schema |
| Servlet 2.3 Jsp1.2 | August 2001 | J2EE 1.3, J2SE 1.2 | Addition of Filter |
| Servlet 2.2 | August 1999 | J2EE 1.2, J2SE 1.2 | Becomes part of J2EE, introduced independent web applications in .war files |
| Servlet 2.1 | November 1998 | Unspecified | First official specification, added RequestDispatcher, ServletContext |
| Servlet 2.0 | JDK 1.1 | Part of Java Servlet Development Kit 2.0 | |
| Servlet 1.0 | June 1997 |
更详细的见wiki：
http://en.wikipedia.org/wiki/Java_Servlet
http://en.wikipedia.org/wiki/JavaServer_Pages
Tomcat 5.5实现 Servlet2.4和Jsp2.0
Tomcat 6实现 Servlet2.5和Jsp2.1
