读取ServletContext

//向ServletContext中得到属性
packagecom.tsinghua;

importjavax.servlet.http.*;
importjavax.servlet.*;
importjava.io.*;


publicclassServletContextTest2extendsHttpServlet{

//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
publicvoiddoGet(HttpServletRequestreq,HttpServletResponseres){
//业务处理
try{
//处理中文乱码
res.setContentType("text/html;charset=gbk");
PrintWriterpw=res.getWriter();

//1、得到ServletContext
ServletContextsc=this.getServletContext();
//2、读取属性
Stringinfo=(String)sc.getAttribute("myInfo");
pw.println("给ServletContext中添加一个属性myinfo，该值是一串字符串:"+info);



}catch(Exceptione){
e.printStackTrace();
}
}
//处理Post请求
publicvoiddoPost(HttpServletRequestreq,HttpServletResponseres){

this.doGet(req,res);
}
}