config
config在JSP中代表配置信息,在JSP中通常很少配置。在servlet中用處最多
(1)在web.xml中配置如下
<servlet>
<!--指定servlet的名字-->
<servlet-name>config</servlet-name>
<!--指定servlet的名字-->
<jsp-file>/01/config.jsp</jsp-file>
<!--配置名爲username的參數,值爲cxg-->
<init-param>
<param-name>username</param-name>
<param-value>cxg</param-value>
</init-param>
<!--配置名爲passward的參數,值爲1234-->
<init-param>
<param-name>passward</param-name>
<param-value>1234</param-value>
</init-param>
</servlet>
<!--指定將config Servlet配置到/config路徑-->
<servlet-mapping>
<servlet-name>config</servlet-name>
<url-pattern>/01/*</url-pattern>
</servlet-mapping>
(2)創建config.jsp
<body>
<%=config.getInitParameter("username") %>
<%=config.getInitParameter("passward") %>
</body>