public class Login extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType(\ request.setCharacterEncoding(\ PrintWriter out = response.getWriter(); }
}
out.println(\用户登录\
out.println(\out.println(\用户名:
\out.println(\密 码:
\out.println(\登录'>\out.println(\
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); }
LoginCl
package com.xueye.testServletcontext.wangzhanjishu;
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 LoginCl extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
response.setContentType(\PrintWriter out = response.getWriter();
String name=request.getParameter(\String pwd=request.getParameter(\if(\
//1先取出来 2然后加一3再放回去 ServletContext sc=this.getServletContext(); String nums=(String)sc.getAttribute(\ if(nums==null){ sc.setAttribute(\ request.getRequestDispatcher(\ }else{ int a=Integer.parseInt(nums)+1; sc.setAttribute(\ request.getRequestDispatcher(\ } }else{ request.getRequestDispatcher(\ } }
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); }
Manager
package com.xueye.testServletcontext.wangzhanjishu;
import java.io.IOException; import java.io.PrintWriter;
import javax.servlet.ServletException; import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;
public class Manage extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response)
}
throws ServletException, IOException {
response.setContentType(\PrintWriter out = response.getWriter();
String nums=(String) this.getServletContext().getAttribute(\
out.println(\访问的次数是\}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); }
注意，当我们刷新的时候计数器会变，那门我们怎么防止这个问题 response.sendRedirect(\