1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3     xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 4     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 5     id="WebApp_ID" version="2.5"> 6     <display-name>CloudService</display-name> 7     <context-param> 8         <param-name>contextConfigLocation</param-name> 9         <param-value>classpath:/config/spring/applicationContext.xml</param-value>10     </context-param>11     <context-param>12         <param-name>log4jRefreshInterval</param-name>13         <param-value>6000</param-value>14     </context-param>15     <listener>16         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>17     </listener>18     <filter>19         <filter-name>struts-prepare</filter-name>20         <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter</filter-class>21     </filter>22     <filter>23         <filter-name>struts-execute</filter-name>24         <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter</filter-class>25     </filter>26     <filter>27         <filter-name>AuthFilter</filter-name>28         <filter-class>com.apple.sqm.web.filter.AuthFilter</filter-class>29     </filter>30     <filter-mapping>31         <filter-name>struts-prepare</filter-name>32         <url-pattern>*.action</url-pattern>33     </filter-mapping>34     <filter-mapping>35         <filter-name>struts-execute</filter-name>36         <url-pattern>*.action</url-pattern>37     </filter-mapping>38     <filter-mapping>39         <filter-name>AuthFilter</filter-name>40         <url-pattern>*.action</url-pattern>41     </filter-mapping>42     <servlet>43         <servlet-name>CXFServlet</servlet-name>44         <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>45         <load-on-startup>1</load-on-startup>46     </servlet>47     <servlet>48         <servlet-name>ChartViewer</servlet-name>49         <servlet-class>com.apple.sqm.web.servlets.ChartViewer</servlet-class>50     </servlet>51     <servlet>52         <servlet-name>DisplayChart</servlet-name>53         <servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>54     </servlet>55     <servlet-mapping>56         <servlet-name>CXFServlet</servlet-name>57         <url-pattern>/services/*</url-pattern>58     </servlet-mapping>59     <servlet-mapping>60         <servlet-name>ChartViewer</servlet-name>61         <url-pattern>/servlet/ChartViewer</url-pattern>62     </servlet-mapping>63     <servlet-mapping>64         <servlet-name>DisplayChart</servlet-name>65         <url-pattern>/servlet/DisplayChart</url-pattern>66     </servlet-mapping>67     <welcome-file-list>68         <welcome-file>index.jsp</welcome-file>69     </welcome-file-list>70 </web-app>

1.

<display-name></display-name>：定义了WEB应用的名字

<display-name>CloudService</display-name>

2.

<context-param></context-param>

context-param元素：声明应用范围内的初始化参数。

7      <context-param>
8         <param-name>contextConfigLocation</param-name>
9         <param-value>classpath:/config/spring/applicationContext.xml</param-value>
10     </context-param>
11     <context-param>
12         <param-name>log4jRefreshInterval</param-name>
13         <param-value>6000</param-value>
14     </context-param>

3.

<filter></filter>

过滤器元素将一个名字与一个实现javax.servlet.Filter接口的类相关联。

18     <filter>
19         <filter-name>struts-prepare</filter-name>
20         <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter</filter-class>
21     </filter>
22     <filter>
23         <filter-name>struts-execute</filter-name>
24         <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter</filter-class>
25     </filter>
26     <filter>
27         <filter-name>AuthFilter</filter-name>
28         <filter-class>com.apple.sqm.web.filter.AuthFilter</filter-class>
29     </filter>

4.

<filter-mapping></filter-mapping>

一旦命名了一个过滤器，就要利用filter-mapping元素把它与一个或多个servlet或JSP页面相关联。

30     <filter-mapping>
31         <filter-name>struts-prepare</filter-name>
32         <url-pattern>*.action</url-pattern>
33     </filter-mapping>
34     <filter-mapping>
35         <filter-name>struts-execute</filter-name>
36         <url-pattern>*.action</url-pattern>
37     </filter-mapping>
38     <filter-mapping>
39         <filter-name>AuthFilter</filter-name>
40         <url-pattern>*.action</url-pattern>
41     </filter-mapping>

5.

<listener></listener>

servlet API的版本2.3增加了对事件监听程序的支持，事件监听程序在建立、修改和删除会话或servlet环境时得到通知。  
Listener元素指出事件监听程序类。

15     <listener>
16 　　　　<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
17     </listener>

6.

<servlet></servlet>

在向servlet或JSP页面制定初始化参数或定制URL时，必须首先命名servlet或JSP页面。

Servlet元素就是用来完成此项任务的。

42     <servlet>
43         <servlet-name>CXFServlet</servlet-name>
44         <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
45         <load-on-startup>1</load-on-startup>
46     </servlet>
47     <servlet>
48         <servlet-name>ChartViewer</servlet-name>
49         <servlet-class>com.apple.sqm.web.servlets.ChartViewer</servlet-class>
50     </servlet>
51     <servlet>
52         <servlet-name>DisplayChart</servlet-name>
53         <servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>
54     </servlet>

7.

<servlet-mapping></servlet-mapping>

服务器一般为servlet提供一个缺省的URL：http://host/webAppPrefix/servlet/ServletName。 
但是，常常会更改这个URL，以便servlet可以访问初始化参数或更容易地处理相对URL。在更改缺省URL时，使用servlet-mapping元素。

55     <servlet-mapping>
56         <servlet-name>CXFServlet</servlet-name>
57         <url-pattern>/services/*</url-pattern>
58     </servlet-mapping>
59     <servlet-mapping>
60         <servlet-name>ChartViewer</servlet-name>
61         <url-pattern>/servlet/ChartViewer</url-pattern>
62     </servlet-mapping>
63     <servlet-mapping>
64         <servlet-name>DisplayChart</servlet-name>
65         <url-pattern>/servlet/DisplayChart</url-pattern>
66     </servlet-mapping>

8.