Java:Servlet历史

Servlet API history
Servlet API version Released Platform Important Changes
Servlet 4.0 Under development Java EE 8 HTTP/2
Servlet 3.1 May 2013 Java EE 7 Non-blocking I/O, HTTP protocol upgrade mechanism (WebSocket)[1]
Servlet 3.0 December 2009 Java EE 6, Java SE 6 Pluggability, Ease of development, Async Servlet, Security, File Uploading
Servlet 2.5 September 2005 Java EE 5, Java SE 5 Requires Java SE 5, supports annotation
Servlet 2.4 November 2003 J2EE 1.4, J2SE 1.3 web.xml uses XML Schema
Servlet 2.3 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