servlet版本及容器和Java版本

HTML5的标准化终于在2014-10-29日尘埃落定，正式发布了。

Servlet和JSP版本不断向前进化，JDK也在进化中，提供了新的增强功能和特性。

Apache Tomcat Versions

tomcat.apache.org

Apache Tomcat is an open source software implementation of the Java Servletand JavaServer Pages technologies. Different versions of Apache Tomcat areavailable for different versions of the Servlet and JSP specifications. Themapping between the specifications and the respective Apache Tomcat versions is:

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	8.0.14	7 and later
3.0	2.2	2.2	1.1	7.0.x	7.0.56	6 and later (WebSocket 1.1 requires 7 or later)
2.5	2.1	2.1	N/A	6.0.x	6.0.41	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

现在应该使用的JDK6及以后版本，其中提供的NIO，及JDK7中提供的AIO（NIO 2），可以极大地提高服务器的并发。

Jetty

http://download.eclipse.org/jetty/

Jetty Versions

Version	Year	Home	JVM	Protocols	Servlet	JSP	Status
9.1	2013	Eclipse	1.7	HTTP/1.1 RFC2616, javax.websocket, SPDY v3	3.1	2.3	Stable
9	2012	Eclipse	1.7	HTTP/1.1 RFC2616, WebSocket RFC 6455, SPDY v3	3.0	2.2	Stable
8	2009-	Eclipse/Codehaus	1.6	HTTP/1.1 RFC2616, WebSocket RFC 6455, SPDY v3	3.0	2.2	Mature
7	2008-	Eclipse/Codehaus	1.5	HTTP/1.1 RFC2616, WebSocket RFC 6455, SPDY v3	2.5	2.1	Mature
6	2006-2010	Codehaus	1.4-1.5	HTTP/1.1 RFC2616	2.5	2.0	Venerable
5	2003-2009	Sourceforge	1.2-1.5	HTTP/1.1 RFC2616	2.4	2.0	Deprecated
4	2001-2006	Sourceforge	1.2, J2ME	HTTP/1.1 RFC2616	2.3	1.2	Ancient
3	1999-2002	Sourceforge	1.2	HTTP/1.1 RFC2068	2.2	1.1	Fossilized
2	1998-2000	Mortbay	1.1	HTTP/1.0 RFC1945	2.1	1.0	Legendary
1	1995-1998	Mortbay	1.0	HTTP/1.0 RFC1945	-	-	Mythical

Jetty v9.1 feature：

Servlet API 3.1

    - Async I/O

  JSR-356

    - javax.websocket support

  Jetty WebSocket API

    - Streaming support

    

  Server Speed Improvements:

    - Shockingly fast response times

    

  New Async Http Client:

    - Our best yet, complete cleanup, faster than you can believe.

  New Connector Architecture:

    - We are now 100% NIO, no more blocking I/O connectors.

    - We no longer have different connectors for different protocols.

      Now you have a ServerConnector, which supports all various flavors of

      connector configurations (http, https, ssl, spdy/2, spdy/3, etc).

      Specifically architected to support new fallback techniques and upcoming

      protocols (eg: http/2 when the spec is final)

Jetty v9.2 feature:

• 支持 Java 8

• 使用 Apache 版本的 Jasper 来处理 JSP/JSTL

• 异步 I/O 代理
• 异步 FastCGI
• ALPN (Application Layer Protocol Negotiation) 规范支持
• 多个Jetty base directories