问题相关代码，请勿粘贴截图
public class ContextServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
ServletContext context = getServletConfig().getServletContext();
// 1、获取 web.xml 中配置的上下文参数 context-param
String username = context.getInitParameter("username");
System.out.println("context-param 参数 username 的值是:" + username);
System.out.println("context-param 参数 password 的值是:" + context.getInitParameter("password"));
}
}
<context-param>
<param-name>username</param-name>
<param-value>context</param-value>
</context-param>
<context-param>
<param-name>password</param-name>
<param-value>root</param-value>
</context-param>
<servlet>
<servlet-name>ContextServlet</servlet-name>
<servlet-class>com.atguigu.servlet.ContextServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ContextServlet</servlet-name>
<url-pattern>/contextServlet</url-pattern>
</servlet-mapping>
运行结果及报错内容
部署后没有报错，也没有输出
我想要达到的结果
正确的输出应该如下：
context-param 参数 username 的值是:context
context-param 参数 password 的值是:root
