cookie乱码处理示例

package com.log;

import java.io.IOException;

import java.net.URLEncoder;

import java.util.ArrayList;

import java.util.Enumeration;

import java.util.List;

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;

import javax.servlet.http.HttpSession;

/**

 * Servlet implementation class LoginServlet

 */

@WebServlet("/LoginServlet.do")

public class LoginServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

    /**

     * @see HttpServlet#HttpServlet()

     */

    public LoginServlet() {

        super();

        // TODO Auto-generated constructor stub

    }

    /**

     * @see HttpServlet#doGet(HttpServletRequest request, 

HttpServletResponse response)

     */

    protected void doGet(HttpServletRequest request, HttpServletResponse 

response) throws ServletException, IOException {

       //首先设置响应和请求页面的编码格式：

        request.setCharacterEncoding("utf-8");

        response.setCharacterEncoding("utf-8");

        response.setContentType("text/html charset='utf-8'");

       //获取表单控件的数据

        Enumeration<String> nameEnu = request.getParameterNames();

        //创建list对象

        List<Object> list = new ArrayList<>();

        while(nameEnu.hasMoreElements())

        {

               list.add(request.getParameter(nameEnu.nextElement()));

        }

        //把数据放在session对象

        HttpSession session = request.getSession();

        if(list.size()>0){

        session.setAttribute("uName", list.get(0));

        }

        //第二种方式，通过Cookie保存用户信息

        Cookie cook1 = new Cookie("userName", URLEncoder.encode

(list.get(0).toString(),"utf-8"));

        cook1.setMaxAge(3*3600);

        response.addCookie(cook1);

//        request.getRequestDispatcher("/main.jsp").forward(request, 

response);

        response.sendRedirect(request.getContextPath()+"/welcome.jsp");

    }

    /**

     * @see HttpServlet#doPost(HttpServletRequest request, 

HttpServletResponse response)

     */

    protected void doPost(HttpServletRequest request, HttpServletResponse 

response) throws ServletException, IOException {

        doGet(request, response);

    }

}

接受页面：

<%@page import="java.net.URLDecoder"%>

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 

"http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Insert title here</title>

</head>

<%

  session.setAttribute("uName", "你好");

  System.out.print(session.getId());

%>

<%

   //获取cookie对象

  Cookie[] getCooks = request.getCookies();

  String user = null;

  if(getCooks.length > 0)

  {

      user = getCooks[0].getValue();

      user = URLDecoder.decode(user, "utf-8");

  }

%>

<body>

  <%=session.getAttribute("uName") %>已进入主页！

  <%=user%>

  <button onclick="location.href='main.jsp?u1=<%=user %>'" type="button">跳转传

参</button>

</body>

</html>
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cookie乱码处理示例

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cookie乱码处理 示例

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cookie乱码处理示例
