不同版本(2.3,2.4,2.5,3.0)的Servlet web.xml 头信息

web.xml v2.3

 xml version="1.0" encoding="ISO-8859-1"?>
 >

 <web-app>

 web-app>

 

web.xml v2.4

 

 xml version="1.0" encoding="UTF-8"?>
 <web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

 web-app>

 

web.xml v2.5

 

 xml version="1.0" encoding="UTF-8"?>

 <web-app xmlns="http://java.sun.com/xml/ns/javaee"

 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

 version="2.5">

 web-app>

 

web.xml v3.0

 

 xml version="1.0" encoding="UTF-8"?>

 <web-app
         version="3.0"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

 web-app>

 

 

web-fragment.xml

 

 <web-fragment xmlns="http://java.sun.com/xml/ns/javaee"
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="
         http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-fragment_3_0.xsd" version="3.0">

 web-fragment>