package servlet_demo03;import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;public class Servlet_Context extends HttpServlet {/*** */private static final long serialVersionUID = -4997823504444105170L;@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {// TODO Auto-generated method stubdoPost(req, resp);}@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {//获取上下文对象ServletContext sc=this.getServletContext();sc.setAttribute("name", "zhangsan");PrintWriter out=resp.getWriter();out.print(sc.getInitParameter("version"));}}

package servlet_demo03;import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;public class Servlet_Context02 extends HttpServlet {/*** */private static final long serialVersionUID = 7562320935883704783L;@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {// TODO Auto-generated method stubdoPost(req, resp);}@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {ServletContext sc=this.getServletContext();PrintWriter out=resp.getWriter();out.println(sc.getInitParameter("version"));out.print(sc.getAttribute("name"));}}