dynamic web module version版本之间的区别

  这个dynamic web module version是与你的servlet版本有关的，若使用tomcat7.0，一般是3.0；若tomcat6，则一般是2.4或2.5.

  选择的不同，则生成web.xml中的dtd文件也不同，如：

[html] view plain copy print ?

1.    <? xml   version= "1.0"   encoding = "UTF-8" ?>   
2. < web-app   xmlns:xsi=  "http://www.w3.org/2001/XMLSchema-instance"  xmlns =  "http://java.sun.com/xml/ns/javaee"  xmlns:web =  "http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  xsi:schemaLocation = "http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"  id =  "WebApp_ID"  version  = "3.0" >   
3. </ web-app >   

  或者   

[html] view plain copy print ?

1. <? xml   version = "1.0"   encoding =  "UTF-8" ?>   
2. < web-app   xmlns:xsi=  "http://www.w3.org/2001/XMLSchema-instance"  xmlns =  "http://java.sun.com/xml/ns/javaee"  xmlns:web =  "http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  xsi:schemaLocation = "http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  id =  "WebApp_ID"  version  = "2.5" >   
3. </ web-app >   

Servlet 3.0December 2009JavaEE 6, JavaSE 6Pluggability, Ease of development, Async Servlet, Security, File UploadingServlet 2.5September 2005JavaEE 5, JavaSE 5Requires JavaSE 5, supports annotationsServlet 2.4November 2003J2EE 1.4, J2SE 1.3

web.xml