📄 sessionservlet.java

📁 利用servlet写的用户注册登陆

💻 JAVA

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package com.tarena.serv.state;

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;
import javax.servlet.http.HttpSession;

public class SessionServlet extends HttpServlet{

	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		HttpSession session=request.getSession();
		
		
		Integer count=(Integer)session.getAttribute("count");
		if(count==null){
			count=1;
			session.setAttribute("count", count);
			
		}else{
		count=	count+1;
		}
		response.setContentType("text/html;charset=utf-8");
		PrintWriter out=response.getWriter();
		out.println("<html>");
		out.println("<head>");
		out.println("<title>session</title>");
		out.println("</head>");
		out.println("<body>");
		out.println("<h3 align=\"center\" >"+count+"</h3>");
		String url="/serv-guides/state/session";
		url=response.encodeURL(url);
		out.println("<hr>");
		out.println("<a href=\"" + url + "\">refresh</a>");
		out.println("<hr>");
		out.println("</body>");
		out.println("</html>");
		out.flush();
		out.close();
		
	}

}

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