.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <display-name>javaWeb_dayziji</display-name> <!-- 全局访问 ,为name赋值,可以在 整个工程下使用config访问--> <context-param> <param-name>name</param-name> <param-value>jjjjj</param-value> </context-param> <servlet> <servlet-name>demo</servlet-name> <servlet-class>cn.tedu.servlet.DemoServlet</servlet-class> <!-- 类下的访问 ,为fileName赋值,只能在demo类下使用config访问--> <init-param> <param-name>fileName</param-name> <param-value>dbcp.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>demo</servlet-name> <url-pattern>/demo</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app>