Java Servlet 3.1 与 Servlet 3.0 的区别
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How Servlet 3.1 differs to Servlet 3.0
提问by CaiNiaoCoder
Is servlet 3.1 under JavaEE 7?
servlet 3.1 是 JavaEE 7 下的吗？
Which version of eclipse supports servlet 3.1 development?
哪个版本的eclipse支持servlet 3.1开发？
采纳答案by Eng.Fouad
Is servlet 3.1 under JavaEE 7?
servlet 3.1 是 JavaEE 7 下的吗？
Servlet 3.1 is introduced with JavaEE 7.
JavaEE 7 引入了 Servlet 3.1。
How Servlet 3.1 differs to Servlet 3.0?
Servlet 3.1 与 Servlet 3.0 有何不同？
Regarding the new changes in Servlet 3.1, read this blog post by Arun Gupta: What's new in Servlet 3.1 ? - Java EE 7 moving forward
关于 Servlet 3.1 中的新变化，请阅读 Arun Gupta 的这篇博文：Servlet 3.1 中有什么新内容？- Java EE 7 向前发展
And I also want to know which version of eclipse support servlet 3.1 development.
而且我也想知道eclipse哪个版本支持servlet 3.1开发。
The new version of Eclipse 4.3 (named Kepler) supports Java EE 7 technologies. See Arun Gupta's blog post: Java EE 7 support in Eclipse 4.3
新版本的 Eclipse 4.3（名为 Kepler）支持 Java EE 7 技术。请参阅 Arun Gupta 的博客文章：Eclipse 4.3 中的 Java EE 7 支持
回答by Arjan Tijms
In addition to the answer given by Eng.Fouad: Servlet 3.1 was indeed introduced with Java EE 7, but it's also implemented standalone by various servers that are themselves not Java EE products, e.g. Tomcat 8or Jetty 9.1.
除了 Eng.Fouad 给出的答案：Java EE 7 确实引入了 Servlet 3.1，但它也由本身不是 Java EE 产品的各种服务器独立实现，例如Tomcat 8或Jetty 9.1。
As for the changes, I collected a number or articles on my ZEEF pagethat are specifically about the new things in Servlet 3.1.
至于变化，我在我的 ZEEF 页面上收集了一些或文章，专门关于 Servlet 3.1 中的新事物。
As a short summary; non-blocking IO and some security features like the '*' role and the possibility to deny HTTP methods not explicitly covered by security constraints were some of the major changes.
作为一个简短的总结；非阻塞 IO 和一些安全功能（如“*”角色）以及拒绝安全约束未明确涵盖的 HTTP 方法的可能性是一些主要变化。
回答by Premraj
Servlet 3.1 vs Servlet 3.0 along with others too
Servlet 3.1 与 Servlet 3.0 以及其他
+=============+================+====================+=============================================================================+
| VERSION | DATE | JAVA EE / JDK | FEATURES / CHANGES |
+=============+================+====================+=============================================================================+
| Servlet 3.1 | May 2013 | JavaEE 7 | Non-blocking I/O, HTTP protocol upgrade mechanism |
+-------------+----------------+--------------------+-----------------------------------------------------------------------------+
| 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 | | |
+-------------+----------------+--------------------+-----------------------------------------------------------------------------+
