sessionservlet.java.001

来自「利用servlet写的用户注册登陆」· 001 代码 · 共 43 行

001
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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 {
	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;
		} else {
			count = count + 1;
		}
		session.setAttribute("count", count);

		response.setContentType("text/html;charset=gbk");
		PrintWriter out = response.getWriter();
		out.println("<html>");
		out.println("<head>");
		out.println("<title>counter</title>");
		out.println("</head>");
		out.println("<body>");
		out.println("<h3 align=\"center\">" + count + "</h3>");
		out.println("<hr>");
		String pageURL = "/serv-guides/state/session";
		pageURL = response.encodeURL(pageURL);
		
		out.println("<a href=\"" + pageURL + "\">refresh</a>");
		out.println("<hr>");
		out.println(session.getId());
		out.println("</body>");
		out.println("</html>");
	}
}

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