package Bean;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class Showtime
*/
@WebServlet("/Showtime")
public class Showtime extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public Showtime() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doPost(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
ServletContext context=getServletContext();
//ServletContext 这个对象全局唯一，内部的所有Servlet都共享这个对象。
//ServletContext 1.是一个域对象 2.可以读取全局配置参数
Integer count=(Integer)context.getAttribute("count");
if(count==null) {
count=new Integer(1);
}else {
count=new Integer(count.intValue()+1);
}
response.setContentType("text/html;charset=utf-8");
PrintWriter out=response.getWriter();
out.print("<html><head><title>");
out.print("显示页面被访问次数");
out.println("</title></head><body>");
out.print("访问第"+count+"次");
context.setAttribute("count", count);
}
}