package servlet_test; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.annotation.WebInitParam; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @WebServlet(urlPatterns={"/servlet03.do"},initParams={@WebInitParam(name="username",value="zhangsan")}) public class servlet03 extends HttpServlet { /** * */ private static final long serialVersionUID = 3802813738414410662L; @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { // TODO Auto-generated method stub doPost(req, resp); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { ServletConfig config=this.getServletConfig(); PrintWriter out=resp.getWriter(); out.println(config.getInitParameter("username")); } }