com.eryansky.common.web.utils.RequestUtil.java Source code

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Here is the source code for com.eryansky.common.web.utils.RequestUtil.java

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/**
 *  Copyright (c) 2012-2014 http://www.eryansky.com
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 */
package com.eryansky.common.web.utils;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

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

public final class RequestUtil {
    private static final Log logger = LogFactory.getLog(RequestUtil.class);

    public static void setCookie(HttpServletResponse response, String name, String value, String path) {
        if (logger.isDebugEnabled()) {
            logger.debug("Cookie '" + name + "',?: '" + path + "'");
        }

        Cookie cookie = new Cookie(name, value);
        cookie.setSecure(false);
        cookie.setPath(path);
        cookie.setMaxAge(2592000);

        response.addCookie(cookie);
    }

    public static Cookie getCookie(HttpServletRequest request, String name) {
        Cookie[] cookies = request.getCookies();
        Cookie returnCookie = null;

        if (cookies == null) {
            return returnCookie;
        }

        for (Cookie thisCookie : cookies) {
            if (thisCookie.getName().equals(name)) {
                if (!thisCookie.getValue().equals("")) {
                    returnCookie = thisCookie;

                    break;
                }
            }
        }

        return returnCookie;
    }

    public static void deleteCookie(HttpServletResponse response, Cookie cookie, String path) {
        if (cookie != null) {
            cookie.setMaxAge(0);
            cookie.setPath(path);
            response.addCookie(cookie);
        }
    }

    public static String getAppURL(HttpServletRequest request) {
        StringBuffer url = new StringBuffer();
        int port = request.getServerPort();
        if (port < 0) {
            port = 80;
        }
        String scheme = request.getScheme();
        url.append(scheme);
        url.append("://");
        url.append(request.getServerName());
        if (((scheme.equals("http")) && (port != 80)) || ((scheme.equals("https")) && (port != 443))) {
            url.append(':');
            url.append(port);
        }
        url.append(request.getContextPath());
        return url.toString();
    }
}