两个时间相比，只精确到天以上，忽略时分秒

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package com.business;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;import java.util.List;import org.apache.commons.lang3.StringUtils;import org.apache.commons.lang3.time.DateUtils;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import com.google.common.collect.Lists;@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations= "classpath:spring/applicationContext.xml")public class DateUtilTest {        public static void main(String[] args) {        System.out.println("************************************************");        System.out.println("************************************************");        List<Long> ids = Lists.newArrayList(12L,123L,23L,432L,235L,235L);        String itemIds = StringUtils.join(ids.toArray(), ",");        System.out.println(itemIds);        System.out.println("************************************************");        System.out.println("************************************************");    }    @Test    public void getSomeDateTest(){        //截去一个时间的时分秒        Date t = new Date();        Date tt = DateUtils.truncate(t1, Calendar.DATE);        //2017-05-24 10:26:50        System.out.println(t);        //2017-05-24 00:00:00        System.out.println(tt);        Date t1 = new Date();        Calendar cal = new GregorianCalendar();        cal.add(Calendar.DATE, 1);        cal.add(Calendar.HOUR_OF_DAY, -1);        Date t2 = cal.getTime();        System.out.println(t1.toString());        System.out.println(t2.toString());        //时间比较，忽略时分秒        System.out.println(DateUtils.truncatedCompareTo(t1, t2, Calendar.DATE));    }}
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