cookie

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(urlPatterns="/cookie.do")
public class CookieServlet extends HttpServlet {

/**
*
*/
private static final long serialVersionUID = -125045494438403062L;

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
doPost(req, resp);
}

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
Cookie cookie=new Cookie("jsessionid","zhangsanlisi");
cookie.setMaxAge(100);
cookie.setPath(req.getContextPath());
resp.addCookie(cookie);
}

}

package session_demo;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(urlPatterns="/getcookie.do")
public class GetCookie extends HttpServlet {

/**
*
*/
private static final long serialVersionUID = -6768741812361862809L;

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
doPost(req, resp);
}

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
Cookie[]cookie=req.getCookies();
resp.setCharacterEncoding("UTF-8");
resp.setContentType("text/html;charset=utf-8");
PrintWriter out=resp.getWriter();
for(Cookie c:cookie){
out.print("cookie名称:"+c.getName()+"<br/>");
out.print("cookie值:"+c.getValue()+"<br/>");
out.print("cookie url:"+c.getPath()+"<br/>");
}
}

}