JDK对Servlet的支持情况

History[edit]

The Servlet specification was created by Sun Microsystems, with version 1.0 finalized in June 1997. Starting with version 2.3, the specification was developed under the Java Community Process. JSR 53 defined both the Servlet 2.3 and JavaServer Page 1.2 specifications. JSR 154 specifies the Servlet 2.4 and 2.5 specifications. As of March 26, 2010, the current version of the Servlet specification is 3.0.

In his blog on java.net, Sun veteran and GlassFish lead Jim Driscoll details the history of servlet technology.^[4] James Gosling first thought of servlets in the early days of Java, but the concept did not become a product until Sun shipped the Java Web Server^[clarify] product. This was before what is now the Java Platform, Enterprise Edition was made into a specification.

Servlet API history

Servlet API version	Released	Platform	Important Changes
Servlet 3.1	May 2013	JavaEE 7	Non-blocking I/O, HTTP protocol upgrade mechanism[5]
Servlet 3.0	December 2009	JavaEE 6, JavaSE 6	Pluggability, Ease of development, Async Servlet, Security, File Uploading
Servlet 2.5	September 2005	JavaEE 5, JavaSE 5	Requires JavaSE 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