servlet学习笔记（三）-Context

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/* * 向servlet context中添加属性 */package com.tsinghua;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;public class ServletContextTest1 extends HttpServlet{//处理get请求//req：用于获得客户端（浏览器）的信息//res：用于向客户端（浏览器）返回信息public void doGet(HttpServletRequest req,HttpServletResponse res){//业务逻辑try {//解决中文乱码res.setContentType("text/html;charset=gbk");PrintWriter pw=res.getWriter();//1.得到servletcontextServletContext sc=this.getServletContext();//2添加属性sc.setAttribute("myInfo", "我是XXX");pw.println("给servlet context 中添加一个属性 myInfo 该属性的值为：我是韩逸俊");} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public void doPose(HttpServletRequest req,HttpServletResponse res){this.doGet(req, res);}}

package com.tsinghua;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;public class ServletContextTest2 extends HttpServlet{public void doGet(HttpServletRequest req,HttpServletResponse res){try {//解决中文乱码res.setContentType("text/html;charset=gbk");PrintWriter pw=res.getWriter();//1.得到servlet contextServletContext sc=this.getServletContext();String Info=(String) sc.getAttribute("myInfo");pw.println("从servlet context中得到属性 myInfo,他的属性是："+Info);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public void doPose(HttpServletRequest req,HttpServletResponse res){this.doGet(req, res);}}

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