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https://github.com/chillzhuang/blade-tool
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⚡ 根据P3C优化代码
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smallchill
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/**
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* Copyright (c) 2018-2028, DreamLu 卢春梦 (qq596392912@gmail.com).
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* <p>
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* Licensed under the GNU LESSER GENERAL PUBLIC LICENSE;
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p>
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* http://www.gnu.org/licenses/lgpl.html
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* <p>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springblade.core.tool.utils;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Locale;
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import java.util.Queue;
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import java.util.TimeZone;
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import java.util.concurrent.ConcurrentLinkedQueue;
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/**
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* 参考tomcat8中的并发DateFormat
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* <p>
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* {@link SimpleDateFormat}的线程安全包装器。
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* 不使用ThreadLocal，创建足够的SimpleDateFormat对象来满足并发性要求。
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* </p>
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*
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* @author L.cm
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*/
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public class ConcurrentDateFormat {
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private final String format;
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private final Locale locale;
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private final TimeZone timezone;
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private final Queue<SimpleDateFormat> queue = new ConcurrentLinkedQueue<>();
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private ConcurrentDateFormat(String format, Locale locale, TimeZone timezone) {
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this.format = format;
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this.locale = locale;
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this.timezone = timezone;
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SimpleDateFormat initial = createInstance();
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queue.add(initial);
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}
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public static ConcurrentDateFormat of(String format) {
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return new ConcurrentDateFormat(format, Locale.getDefault(), TimeZone.getDefault());
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}
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public static ConcurrentDateFormat of(String format, TimeZone timezone) {
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return new ConcurrentDateFormat(format, Locale.getDefault(), timezone);
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}
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public static ConcurrentDateFormat of(String format, Locale locale, TimeZone timezone) {
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return new ConcurrentDateFormat(format, locale, timezone);
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}
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public String format(Date date) {
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SimpleDateFormat sdf = queue.poll();
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if (sdf == null) {
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sdf = createInstance();
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}
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String result = sdf.format(date);
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queue.add(sdf);
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return result;
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}
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public Date parse(String source) throws ParseException {
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SimpleDateFormat sdf = queue.poll();
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if (sdf == null) {
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sdf = createInstance();
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}
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Date result = sdf.parse(source);
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queue.add(sdf);
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return result;
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}
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private SimpleDateFormat createInstance() {
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SimpleDateFormat sdf = new SimpleDateFormat(format, locale);
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sdf.setTimeZone(timezone);
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return sdf;
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}
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}
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/**
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* Copyright (c) 2018-2028, DreamLu 卢春梦 (qq596392912@gmail.com).
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* <p>
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* Licensed under the GNU LESSER GENERAL PUBLIC LICENSE;
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p>
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* http://www.gnu.org/licenses/lgpl.html
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* <p>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springblade.core.tool.utils;
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import org.springframework.util.Assert;
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import java.text.ParseException;
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import java.util.Calendar;
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import java.util.Date;
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/**
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* 日期工具类
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*
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* @author L.cm
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*/
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public class DateUtil {
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/**
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* 设置年
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*
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* @param date 时间
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* @param amount 年数，-1表示减少
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* @return 设置后的时间
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*/
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public static Date setYears(Date date, int amount) {
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return set(date, Calendar.YEAR, amount);
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}
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/**
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* 设置月
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*
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* @param date 时间
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* @param amount 月数，-1表示减少
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* @return 设置后的时间
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*/
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public static Date setMonths(Date date, int amount) {
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return set(date, Calendar.MONTH, amount);
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}
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/**
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* 设置周
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*
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* @param date 时间
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* @param amount 周数，-1表示减少
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* @return 设置后的时间
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*/
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public static Date setWeeks(Date date, int amount) {
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return set(date, Calendar.WEEK_OF_YEAR, amount);
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}
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/**
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* 设置天
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*
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* @param date 时间
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* @param amount 天数，-1表示减少
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* @return 设置后的时间
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*/
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public static Date setDays(Date date, int amount) {
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return set(date, Calendar.DATE, amount);
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}
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/**
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* 设置小时
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*
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* @param date 时间
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* @param amount 小时数，-1表示减少
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* @return 设置后的时间
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*/
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public static Date setHours(Date date, int amount) {
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return set(date, Calendar.HOUR_OF_DAY, amount);
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}
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/**
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* 设置分钟
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*
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* @param date 时间
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* @param amount 分钟数，-1表示减少
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* @return 设置后的时间
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*/
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public static Date setMinutes(Date date, int amount) {
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return set(date, Calendar.MINUTE, amount);
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}
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/**
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* 设置秒
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*
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* @param date 时间
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* @param amount 秒数，-1表示减少
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* @return 设置后的时间
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*/
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public static Date setSeconds(Date date, int amount) {
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return set(date, Calendar.SECOND, amount);
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}
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/**
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* 设置毫秒
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*
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* @param date 时间
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* @param amount 毫秒数，-1表示减少
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* @return 设置后的时间
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*/
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public static Date setMilliseconds(Date date, int amount) {
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return set(date, Calendar.MILLISECOND, amount);
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}
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/**
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* 设置日期属性
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*
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* @param date 时间
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* @param calendarField 更改的属性
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* @param amount 更改数，-1表示减少
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* @return 设置后的时间
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*/
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private static Date set(Date date, int calendarField, int amount) {
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Assert.notNull(date, "The date must not be null");
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Calendar c = Calendar.getInstance();
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c.setLenient(false);
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c.setTime(date);
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c.add(calendarField, amount);
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return c.getTime();
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}
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public static final String PATTERN_DATETIME = "yyyy-MM-dd HH:mm:ss";
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public static final String PATTERN_DATE = "yyyy-MM-dd";
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public static final String PATTERN_TIME = "HH:mm:ss";
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public static final ConcurrentDateFormat DATETIME_FORMAT = ConcurrentDateFormat.of(PATTERN_DATETIME);
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public static final ConcurrentDateFormat DATE_FORMAT = ConcurrentDateFormat.of(PATTERN_DATE);
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public static final ConcurrentDateFormat TIME_FORMAT = ConcurrentDateFormat.of(PATTERN_TIME);
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/**
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* 日期时间格式化
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*
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* @param date 时间
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* @return 格式化后的时间
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*/
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public static String formatDateTime(Date date) {
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return DATETIME_FORMAT.format(date);
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}
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/**
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* 日期格式化
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*
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* @param date 时间
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* @return 格式化后的时间
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*/
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public static String formatDate(Date date) {
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return DATE_FORMAT.format(date);
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}
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/**
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* 时间格式化
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*
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* @param date 时间
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* @return 格式化后的时间
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*/
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public static String formatTime(Date date) {
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return TIME_FORMAT.format(date);
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}
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/**
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* 日期格式化
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*
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* @param date 时间
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* @param pattern 表达式
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* @return 格式化后的时间
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*/
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public static String format(Date date, String pattern) {
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return ConcurrentDateFormat.of(pattern).format(date);
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}
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/**
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* 将字符串转换为时间
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*
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* @param dateStr 时间字符串
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* @param pattern 表达式
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* @return 时间
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*/
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public static Date parse(String dateStr, String pattern) {
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ConcurrentDateFormat format = ConcurrentDateFormat.of(pattern);
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try {
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return format.parse(dateStr);
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} catch (ParseException e) {
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throw Exceptions.unchecked(e);
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}
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}
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/**
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* 将字符串转换为时间
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*
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* @param dateStr 时间字符串
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* @param format ConcurrentDateFormat
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* @return 时间
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*/
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public static Date parse(String dateStr, ConcurrentDateFormat format) {
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try {
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return format.parse(dateStr);
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} catch (ParseException e) {
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throw Exceptions.unchecked(e);
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}
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}
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}
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