net.duckling.ddl.util.Utility.java Source code

Introduction

Here is the source code for net.duckling.ddl.util.Utility.java

Source

/*
 * Copyright (c) 2008-2016 Computer Network Information Center (CNIC), Chinese Academy of Sciences.
 * 
 * This file is part of Duckling project.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 *
 */

package net.duckling.ddl.util;

import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.codec.binary.Base64;

/**
 * Introduction Here.
 * 
 * @date Feb 2, 2010
 * @author Sun Peng (sunp@cnic.cn)
 */
public final class Utility {
    private Utility() {
    }

    public static boolean int2bool(int value) {
        return (value != 0);
    }

    public static int bool2int(boolean value) {
        return (value ? 1 : 0);
    }

    public static Timestamp date2Timestamp(Date date) {
        if (date == null) {
            return null;
        } else {
            return new Timestamp(date.getTime());
        }
    }

    //  s  BASE64 ?
    public static String getBASE64(String s) {
        if (s == null) {
            return null;
        }
        return new String(Base64.encodeBase64(s.getBytes()));
    }

    public static String getFromBASE64(String s) {
        if (s == null) {
            return null;
        }
        try {
            return new String(Base64.decodeBase64(s.getBytes()));
        } catch (Exception e) {
            return null;
        }
    }

    public static String getDateShort(Date date) {
        Calendar calToday = Calendar.getInstance();
        calToday.set(Calendar.HOUR_OF_DAY, 0);
        Calendar calYear = Calendar.getInstance();
        calYear.set(Calendar.DAY_OF_YEAR, 1);
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        if (cal.after(calToday)) {
            return (new SimpleDateFormat("HH:mm")).format(cal.getTime());
        } else if (cal.after(calYear)) {
            return (new SimpleDateFormat("MMdd")).format(cal.getTime());
        } else {
            return (new SimpleDateFormat("yyyy")).format(cal.getTime());
        }
    }

    public static String getDateCustom(Date date, String fmt) {
        Calendar calToday = Calendar.getInstance();
        calToday.set(Calendar.HOUR_OF_DAY, 0);
        Calendar calYear = Calendar.getInstance();
        calYear.set(Calendar.DAY_OF_YEAR, 1);
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return (new SimpleDateFormat(fmt)).format(cal.getTime());
    }

    public static String getIpAddr(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }
}