读取Web.xml中各种类型参数的方法

1.JSP 讀取 web.xml 的方法:
<context-param>
            <param-name>test</param-name>
            <param-value>test_value</param-value>
</context-param>

 

String test = new String(application.getInitParameter("test"));

 

2.用 Servlet 讀取 web.xml 的方法

<servlet>
            <servlet-name>ServletName</servlet-name>
            <servlet-class>com.xxx.ServletName</servlet-class>
            <init-param>
            <param-name>test</param-name>
            <param-value>test_value</param-value>
            </init-param>
</servlet>

 

public void init(javax.servlet.ServletConfig config)
            throws ServletException {
            super.init( config );
            test = config.getInitParameter("test");
            }

 

 

3.用 Struts 讀取 web.xml 的方法

<servlet>
            <servlet-name>action</servlet-name>
            <servlet-class>org.apache.struts.action.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>FINAL</param-name>
            <param-value>XXX</param-value>
            </init-param>
</servlet>

 

import javax.servlet.ServletConfig;
            ...
javax.servlet.ServletConfig config = this.getServlet().getServletConfig();
String test = config.getInitParameter("FINAL");