Cookie

package cookies;


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


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


public class Cookie1 extends HttpServlet {


/**
* Constructor of the object.
*/
public Cookie1() {
super();
}


/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}


/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
* 
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {


this.doPost(request, response);
}


/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
* 
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {


response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();

//设置cookie（第一次响应客户端发送的cookie信息）
String name=request.getParameter("name");
String nickname=request.getParameter("nickname");
if(name==null||nickname==null){
out.println("请传递参数name和nickname");
return;
}
if("".equals(name.trim())||"".equals(nickname.trim())){
out.println("请不要传递过来");
return;
}else{
Cookie ckname=new Cookie("name",name);
Cookie cknickname=new Cookie("nickname",nickname);
cknickname.setMaxAge(365*24*3600);
Cookie ckemail=new Cookie("email", "111@qq.com");
Cookie ckphone=new Cookie("phone", "119");

response.addCookie(ckname);
response.addCookie(cknickname);
response.addCookie( ckemail);
response.addCookie(ckphone);

}

//获取客户端cookie（第二次或更多次的访问，服务器端读取客户端浏览器发送的kookie）
String lastnickname=null;
Cookie []cks=request.getCookies();
for(int i=0;cks!=null&&i<cks.length;i++){
if("nickname".equals(cks[i].getName())){
lastnickname=cks[i].getValue();
break;
}
}
if(lastnickname!=null){
out.println("欢迎你，"+lastnickname);
}else{
out.println("欢迎你，新客人！");
}
}


/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}


}