我怎么知道我的Tomcat是否支持Servlet 3.0？

Question

我正在使用Tomcat 6.33，我想知道如何检查它是否支持Servlet 3.0或El 2.2？

Answer 1

You can check by reading the Tomcat documentation - see the Apache Tomcat Versions page ... which lists the versions of the JSP and Servlet specs supported by each major version of Tomcat.

(Answer from the list: Tomcat 6.x supports Servlet 2.5 and JSP/EL 2.1)

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If you want to find out the Servlet spec version at runtime, the ServletContext API has methods called getMajorVersion() and getMinorVersion() that should tell you.

I also found this recipe for displaying various version numbers using a JSP:

Server info: <%= application.getServerInfo() %><br>
Servlet version: <%= application.getMajorVersion() %>.<%= application.getMinorVersion() %><br>
JSP version: <%= JspFactory.getDefaultFactory().getEngineInfo().getSpecificationVersion() %><br>
Java version: <%= System.getProperty("java.version") %><br>

Answer 2

来自http://tomcat.apache.org/whichversion.html:Tomcat 6支持Servlet 2.5

Answer 3

Apache Tomcat 7.0.x onwords支持Servlet 3.0 API， Apache Tomcat 7.0.65是实际的发行版本。