欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

CookieUtils工具类

程序员文章站 2022-07-05 21:20:19
CookieUtilspackage com.zkx.utils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.UnsupportedEncodin...

CookieUtils

package com.zkx.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;


/**
 * 
 * @Title: CookieUtils.java
 * @Description: Cookie 工具类
 * Copyright: Copyright (c)
 * @version V1.0
 */
public final class CookieUtils {

    final static Logger logger = LoggerFactory.getLogger(CookieUtils.class);
	
	/**
	 * 
	 * @Description: 得到Cookie的值, 不编码
	 * @param request
	 * @param cookieName
	 * @return
	 */
    public static String getCookieValue(HttpServletRequest request, String cookieName) {
        return getCookieValue(request, cookieName, false);
    }
    
    /**
     * 
     * @Description: 得到Cookie的值
     * @param request
     * @param cookieName
     * @param isDecoder
     * @return
     */
    public static String getCookieValue(HttpServletRequest request, String cookieName, boolean isDecoder) {
        Cookie[] cookieList = request.getCookies();
        if (cookieList == null || cookieName == null) {
            return null;
        }
        String retValue = null;
        try {
            for (int i = 0; i < cookieList.length; i++) {
                if (cookieList[i].getName().equals(cookieName)) {
                    if (isDecoder) {
                        retValue = URLDecoder.decode(cookieList[i].getValue(), "UTF-8");
                    } else {
                        retValue = cookieList[i].getValue();
                    }
                    break;
                }
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return retValue;
    }

    /**
     * 
     * @Description: 得到Cookie的值
     * @param request
     * @param cookieName
     * @param encodeString
     * @return
     */
    public static String getCookieValue(HttpServletRequest request, String cookieName, String encodeString) {
        Cookie[] cookieList = request.getCookies();
        if (cookieList == null || cookieName == null) {
            return null;
        }
        String retValue = null;
        try {
            for (int i = 0; i < cookieList.length; i++) {
                if (cookieList[i].getName().equals(cookieName)) {
                    retValue = URLDecoder.decode(cookieList[i].getValue(), encodeString);
                    break;
                }
            }
        } catch (UnsupportedEncodingException e) {
        	 e.printStackTrace();
        }
        return retValue;
    }

    /**
     * 
     * @Description: 设置Cookie的值 不设置生效时间默认浏览器关闭即失效,也不编码
     * @param request
     * @param response
     * @param cookieName
     * @param cookieValue
     */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue) {
        setCookie(request, response, cookieName, cookieValue, -1);
    }

    /**
     * 
     * @Description: 设置Cookie的值 在指定时间内生效,但不编码
     * @param request
     * @param response
     * @param cookieName
     * @param cookieValue
     * @param cookieMaxage
     */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue, int cookieMaxage) {
        setCookie(request, response, cookieName, cookieValue, cookieMaxage, false);
    }

    /**
     * 
     * @Description: 设置Cookie的值 不设置生效时间,但编码
     * 在服务器被创建,返回给客户端,并且保存客户端
     * 如果设置了SETMAXAGE(int seconds),会把cookie保存在客户端的硬盘中
     * 如果没有设置,会默认把cookie保存在浏览器的内存中
     * 一旦设置setPath():只能通过设置的路径才能获取到当前的cookie信息
     * @param request
     * @param response
     * @param cookieName
     * @param cookieValue
     * @param isEncode
     */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue, boolean isEncode) {
        setCookie(request, response, cookieName, cookieValue, -1, isEncode);
    }

   /**
    * 
    * @Description: 设置Cookie的值 在指定时间内生效, 编码参数
    * @param request
    * @param response
    * @param cookieName
    * @param cookieValue
    * @param cookieMaxage
    * @param isEncode
    */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue, int cookieMaxage, boolean isEncode) {
        doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, isEncode);
    }

    /**
     * 
     * @Description: 设置Cookie的值 在指定时间内生效, 编码参数(指定编码)
     * @param request
     * @param response
     * @param cookieName
     * @param cookieValue
     * @param cookieMaxage
     * @param encodeString
     */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue, int cookieMaxage, String encodeString) {
        doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, encodeString);
    }

    /**
     * 
     * @Description: 删除Cookie带cookie域名
     * @param request
     * @param response
     * @param cookieName
     */
    public static void deleteCookie(HttpServletRequest request, HttpServletResponse response,
            String cookieName) {
        doSetCookie(request, response, cookieName, null, -1, false);
//        doSetCookie(request, response, cookieName, "", -1, false);
    }

    
    /**
     * 
     * @Description: 设置Cookie的值,并使其在指定时间内生效
     * @param request
     * @param response
     * @param cookieName
     * @param cookieValue
     * @param cookieMaxage	cookie生效的最大秒数
     * @param isEncode
     */
    private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response,
            String cookieName, String cookieValue, int cookieMaxage, boolean isEncode) {
        try {
            if (cookieValue == null) {
                cookieValue = "";
            } else if (isEncode) {
                cookieValue = URLEncoder.encode(cookieValue, "utf-8");
            }
            Cookie cookie = new Cookie(cookieName, cookieValue);
            if (cookieMaxage > 0)
                cookie.setMaxAge(cookieMaxage);
            if (null != request) {// 设置域名的cookie
            	String domainName = getDomainName(request);
                logger.info("========== domainName: {} ==========", domainName);
                if (!"localhost".equals(domainName)) {
                	cookie.setDomain(domainName);
                }
            }
            cookie.setPath("/");
            response.addCookie(cookie);
        } catch (Exception e) {
        	 e.printStackTrace();
        }
    }

    /**
     * 
     * @Description: 设置Cookie的值,并使其在指定时间内生效
     * @param request
     * @param response
     * @param cookieName
     * @param cookieValue
     * @param cookieMaxage	cookie生效的最大秒数
     * @param encodeString
     */
    private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response,
            String cookieName, String cookieValue, int cookieMaxage, String encodeString) {
        try {
            if (cookieValue == null) {
                cookieValue = "";
            } else {
                cookieValue = URLEncoder.encode(cookieValue, encodeString);
            }
            Cookie cookie = new Cookie(cookieName, cookieValue);
            if (cookieMaxage > 0)
                cookie.setMaxAge(cookieMaxage);
            if (null != request) {// 设置域名的cookie
            	String domainName = getDomainName(request);
                logger.info("========== domainName: {} ==========", domainName);
                if (!"localhost".equals(domainName)) {
                	cookie.setDomain(domainName);
                }
            }
            cookie.setPath("/");
            response.addCookie(cookie);
        } catch (Exception e) {
        	 e.printStackTrace();
        }
    }

    /**
     * 
     * @Description: 得到cookie的域名
     * @return
     */
    private static final String getDomainName(HttpServletRequest request) {
        String domainName = null;

        String serverName = request.getRequestURL().toString();
        if (serverName == null || serverName.equals("")) {
            domainName = "";
        } else {
            serverName = serverName.toLowerCase();
            serverName = serverName.substring(7);
            final int end = serverName.indexOf("/");
            serverName = serverName.substring(0, end);
            if (serverName.indexOf(":") > 0) {
            	String[] ary = serverName.split("\\:");
            	serverName = ary[0];
            }

            final String[] domains = serverName.split("\\.");
            int len = domains.length;
            if (len > 3 && !isIp(serverName)) {
            	// www.xxx.com.cn
                domainName = "." + domains[len - 3] + "." + domains[len - 2] + "." + domains[len - 1];
            } else if (len <= 3 && len > 1) {
                // xxx.com or xxx.cn
                domainName = "." + domains[len - 2] + "." + domains[len - 1];
            } else {
                domainName = serverName;
            }
        }
        return domainName;
    }
    
    public static String trimSpaces(String IP){//去掉IP字符串前后所有的空格  
        while(IP.startsWith(" ")){  
               IP= IP.substring(1,IP.length()).trim();  
            }  
        while(IP.endsWith(" ")){  
               IP= IP.substring(0,IP.length()-1).trim();  
            }  
        return IP;  
    }  
    
    public static boolean isIp(String IP){//判断是否是一个IP  
        boolean b = false;  
        IP = trimSpaces(IP);  
        if(IP.matches("\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}")){  
            String s[] = IP.split("\\.");  
            if(Integer.parseInt(s[0])<255)  
                if(Integer.parseInt(s[1])<255)  
                    if(Integer.parseInt(s[2])<255)  
                        if(Integer.parseInt(s[3])<255)  
                            b = true;  
        }  
        return b;  
    }  

}

 

本文地址:https://blog.csdn.net/IT_world_/article/details/110825406

相关标签: 工具类