com.taobao.itest.util.DateConverter.java Source code

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Here is the source code for com.taobao.itest.util.DateConverter.java

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/*
 * Copyright 2011 Alibaba Group Holding Limited.
 * All rights reserved.
 *
 * 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 com.taobao.itest.util;

import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;

import org.apache.commons.beanutils.ConversionException;
import org.apache.commons.beanutils.Converter;
import org.apache.commons.lang.StringUtils;
import org.springframework.context.i18n.LocaleContextHolder;

public class DateConverter implements Converter {
    private static String resource = "envParams";
    private static String defaultDateTimePattern = null;
    private static String defaultDatePattern = null;

    public static synchronized String getDatePattern() {
        Locale locale = LocaleContextHolder.getLocale();
        try {
            defaultDatePattern = ResourceBundle.getBundle(resource, locale).getString("datePattern");
        } catch (MissingResourceException mse) {
            defaultDatePattern = "yyyy-MM-dd";
        }

        return defaultDatePattern;
    }

    public static synchronized String getDateTimePattern() {
        Locale locale = LocaleContextHolder.getLocale();
        try {
            defaultDateTimePattern = ResourceBundle.getBundle(resource, locale).getString("dateTimePattern");
        } catch (MissingResourceException mse) {
            defaultDateTimePattern = "yyyy-MM-dd HH:mm:ss";
        }

        return defaultDateTimePattern;
    }

    @Override
    public Object convert(@SuppressWarnings("rawtypes") Class type, Object value) {
        if (value == null) {
            return null;
        } else if (type == Timestamp.class) {
            return convertToDate(type, value);
        } else if (type == Date.class) {
            return convertToDate(type, value);
        } else if (type == String.class) {
            return convertToString(type, value);
        } else {
            return value;
        }

        // throw new ConversionException("Could not convert "
        // + value.getClass().getName() + " to " + type.getName());
    }

    protected Object convertToDate(@SuppressWarnings("rawtypes") Class type, Object value) {
        if (value instanceof String) {
            try {
                if (StringUtils.isEmpty(value.toString())) {
                    return null;
                }
                String pattern = getDatePattern();
                if (value.toString().contains(":")) {
                    pattern = getDateTimePattern();
                }
                DateFormat df = new SimpleDateFormat(pattern);
                Date date = df.parse((String) value);
                if (type.equals(Timestamp.class)) {
                    return new Timestamp(date.getTime());
                }
                return date;
            } catch (Exception pe) {
                pe.printStackTrace();
                throw new ConversionException("Error converting String to Date");
            }
        } else if (value instanceof Date) {
            return value;
        } else if (value instanceof Long) {
            return getGmtDate((Long) value);
        }

        throw new ConversionException("Could not convert " + value.getClass().getName() + " to " + type.getName());
    }

    public Object convertToString(@SuppressWarnings("rawtypes") Class type, Object value) {

        if (value instanceof Date) {
            DateFormat df = new SimpleDateFormat(getDatePattern());
            if (value instanceof Timestamp) {
                df = new SimpleDateFormat(getDateTimePattern());
            }

            try {
                return df.format(value);
            } catch (Exception e) {
                e.printStackTrace();
                throw new ConversionException("Error converting Date to String");
            }
        } else {
            return value.toString();
        }
    }

    public static String dateToStr(Date date, String pattern) {
        if (pattern == null) {
            pattern = "yyyy-MM-dd HH:mm:ss.SSS";
        }
        DateFormat ymdhmsFormat = new SimpleDateFormat(pattern);

        return ymdhmsFormat.format(date);
    }

    public static Date strToDate(String str, String pattern) throws ParseException {
        if (pattern == null) {
            pattern = "yyyy-MM-dd HH:mm:ss.SSS";
        }
        DateFormat ymdhmsFormat = new SimpleDateFormat(pattern);
        return ymdhmsFormat.parse(str);
    }

    public static Date getToday() {
        Calendar ca = Calendar.getInstance();
        return ca.getTime();
    }

    public static Date mkDate(int year, int month, int date) {
        Calendar ca = Calendar.getInstance();
        ca.set(year, month - 1, date);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
        sdf.format(ca.getTime());
        return ca.getTime();
    }

    /**
     * get GMT Time
     * 
     * @param calendar
     * @return
     */
    public Date getGmtDate(Long time) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(time);
        int offset = calendar.get(Calendar.ZONE_OFFSET) / 3600000 + calendar.get(Calendar.DST_OFFSET) / 3600000;
        calendar.add(Calendar.HOUR, -offset);
        Date date = calendar.getTime();

        return date;
    }

}