Java web.xml详解

转载自:http://blog.189pt.com/975/ 

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

<web-app 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" version="2.4">

<display-name>网站名称</display-name>
<description>网站描述</description>

<!-- icon元素包含small-icon和large-icon两个子元素.用来指定web站台中小图标和大图标的路径. -->
<icon>
<!--small-icon元素应指向web站台中某个小图标的路径,大小为16 X 16 pixel,但是图象文件必须为GIF或JPEG格式,扩展名必须为:.gif或.jpg. -->
<small-icon>路径/small.gif</small-icon>
<!--large-icon元素应指向web站台中某个大图表路径,大小为32 X 32 pixel,但是图象文件必须为GIF或JPEG的格式,扩展名必须为; gif或jpg.-->
<large-icon>路径/large.jpg</large-icon>
</icon>

<!-- 配置集群的时候,要用到,在这篇文章:“apache+tomcat集群、负载均衡及session复制”里的第三条(http://jiajun.iteye.com/admin/blogs/278586) -->
<distributable/>

<!-- context-param 元素用来设定web站台的环境参数(context),它包含两个子元素:param-name和param-value.,如spring的典型配置 -->
<context-param>
<!-- 设定Context名称 -->
<param-name>contextConfigLocation</param-name>
<!-- 设定Context名称的值 -->
<param-value>/WEB-INF/spring-config.xml</param-value>
</context-param>
<!-- 备注:此所设定的参数,在JSP网页中可以使用下列方法来取得:${initParam.param_name}
若在Servlet可以使用下列方法来获得:String param_name=getServletContext().getInitParamter("param_name");
-->

&nbsp; &nbsp;<!-- filter元素用来声明filter的相关设定.filter元素除了下面介绍的的子元素之外,还包括下面<servlet>绍过的<icon>,<display-name>,<description>,<init-param>,其用途一样.-->
<filter>
<!-- 定义Filter的名称. -->
<filter-name>URIFilter</filter-name>
<!-- 定义Filter的类名称 -->
<filter-class>org.cjj.filter.URIFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<!-- filter-mapping 元素的两个主要子元素filter-name和url-pattern.用来定义Filter所对应的URL.和下面的servlet-mapping一样 -->
<filter-mapping>
<!-- 定义Filter的名称,和上面定义的Filter名称要一致 -->
<filter-name>URIFilter</filter-name>
<!-- ilter所对应的RUL,这里是所有的URL -->
<url-pattern>/*</url-pattern>
</filter-mapping>

<!-- 这里配置和上面的Filter配置一样 -->
<servlet>
<description><![CDATA[Application Setup]]></description>
<servlet-name>HTML Action Servlet</servlet-name>
<servlet-class>org.cjj.servlet.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<!-- 和上面的filter-mapping,一样 -->
<servlet-mapping>
<servlet-name>HTML Action Servlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<!-- listener元素用来定义Listener接口,它的主要子元素为<listener-class> -->
<listener>
<!-- ServletContextListener接口的实现,监听Content -->
<listener-class>org.cjj.listener.ContextListener</listener-class>
</listener>
<listener>
<!-- HttpSessionListener, HttpSessionAttributeListener接口的实现,监听session -->
<listener-class>org.cjj.listener.SessionListener</listener-class>
</listener>

<!-- session-config包含一个子元素session-timeout.定义web站台中的session参数. -->
<session-config>
<!-- 定义这个web站台所有session的有效期限.单位为分钟. 例子中为600分钟 -->
<session-timeout>600</session-timeout>
</session-config>

<!-- mime-mapping包含两个子元素extension和mime-type.定义某一个扩展名和某一MIME Type做对映. -->
<mime-mapping>
<!-- 扩展名称 -->
<extension>htm</extension>
<!-- MIME格式 -->
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>flv</extension>
<mime-type>video/x-flv</mime-type>
</mime-mapping>
<mime-mapping>
<extension>doc</extension>
<mime-type>application/vnd.ms-word</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xls</extension>
<mime-type>application/vnd.ms-excel</mime-type>
</mime-mapping>

<!-- welcome-file-list包含子元素welcome-file,用来定义首页列单,如: -->
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
<welcome-file>index.html</welcome-file>
</welcome-file-list>

<!-- error-page元素包含三个子元素error-code,exception-type和location.将错误代码(Error Code)或异常(Exception)的种类对应到web站台资源路径.-->
<error-page>
<!-- HTTP Error code -->
<error-code>403</error-code>
<!-- 在web站点内的相关资源路径 -->
<location>路径/403.jsp</location>
</error-page>
<error-page>
<error-code>404</error-code>
<location>路径/404.jsp</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>路径/500.jsp</location>
</error-page>
<error-page>
<!-- 一个完整名称的Java异常类型 -->
<exception-type>java.lang.Exception</exception-type>
<location>路径/exception.jsp</location>
</error-page>

<!-- jsp-config元素主要用来设定JSP的相关配置,<jsp:config>包括<taglib>和<jsp-property-group>两个子元素.
其中<taglib>元素在JSP 1.2时就已经存在了;而<jsp-property-group>是JSP 2.0新增的元素.
-->
<jsp-config>
<!-- taglib元素包含两个子元素taglib-uri和taglib-location.用来设定JSP网页用到的Tag Library路径. -->
<taglib>
<!-- 定义TLD文件的URI,JSP网页的taglib指令可以经由这个URI存取到TLD文件. -->
<taglib-uri>core</taglib-uri>
<!-- TLD文件对应Web站台的存放位置. -->
<taglib-location>/WEB-INF/tld/jstl-1-core.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>bean</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-bean.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>html</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-html.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>logic</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-logic.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>tiles</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-tiles.tld</taglib-location>
</taglib>
<!-- jsp-property-group元素包含8个元素 -->
<jsp-property-group>
<!-- 此设定的说明 -->
<description>Special property group for JSP Configuration JSP example.</description>
<!-- 此设定的名称 -->
<display-name>JSPConfiguration</display-name>
<!-- 设定值所影响的范围,如:/CH2 或者/*.jsp -->
<uri-pattern>/*</uri-pattern>
<!-- 若为true,表示不支持EL语法. -->
<el-ignored>true</el-ignored>
<!-- 若为true表示不支持<%scription%>语法. -->
<scripting-invalid>false</scripting-invalid>
<!-- 设置JSP网页的抬头,扩展名为.jspf -->
<include-prelude>.jspf</include-prelude>
<!-- 设置JSP网页的结尾,扩展名为.jspf -->
<include-coda>.jspf</include-coda>
<!-- 编码 -->
<page-encoding>utf-8</page-encoding>
</jsp-property-group>
</jsp-config>

<!-- esource-ref元素包括五个子元素description,res-ref-name,res-type,res-auth,res-sharing-scope.利用JNDI取得站台可 -->
<resource-ref>
<!-- 资源说明 -->
<description>JNDI JDBC DataSource of JSPBook</description>
<!-- 资源名称 -->
<res-ref-name>jdbc/sample_db</res-ref-name>
<!-- 资源种类 -->
<res-type>javax.sql.DataSoruce</res-type>
<!-- 资源由Application或Container来许可,如下面为Container -->
<res-auth>Container</res-auth>
<!-- 资源是否可以共享.默认值为 Shareable 可选择Shareable|Unshareable -->
<res-sharing-scope>Unshareable</res-sharing-scope>
</resource-ref>

</web-app>
posted on 2012-09-03 17:06  nami  阅读(317)  评论(0编辑  收藏  举报