cookieutil.java

一个留言板 系统平台： JSP+SQLServer 支持开通无限个数的留言板

/*
 * CookieUtil.java
 *
 * Created on 2006年7月25日, 下午3:58
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */

package tot.util;
import java.beans.*;
import java.io.Serializable;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
/**
 *
 * @author  wy1
 */
public class CookieUtil {
    
    /** Creates a new instance of CookieUtil */
    public CookieUtil() {
    }
    private static String cookieEncode(String encodestr) {
        return StringUtils.base64Encode(encodestr);
    }
    
    private static String cookiedecode(String encodestr) {
        return StringUtils.base64Decode(encodestr);
    }
    /** 获得指定Cookie的值 */
    public static String getCookieValue(Cookie[] cookies,String cookieName,String defaultValue) {
        if(cookies!=null){
            for(int i=0;i<cookies.length;i++) {
                Cookie cookie = cookies[i];
                if (cookieName.equals(cookie.getName())){
                    return(cookiedecode(cookie.getValue()));}
            }
        } else{
            return(null);
        }
         return(defaultValue);
    }
    public static void setCookie(HttpServletResponse response, String cookieName, String cookievalue) {
        Cookie cookie = new Cookie(cookieName,cookievalue);
        cookie.setPath("/");
        response.addCookie(cookie);
    }
    
    public static void setCookie(HttpServletResponse response, String cookieName, String cookievalue, int maxtime) {
        Cookie cookie = new Cookie(cookieName,cookieEncode(cookievalue));
        cookie.setMaxAge(maxtime);
        cookie.setPath("/");
        response.addCookie(cookie);
    }
}