JDK8的lambda方式List多字段排序List.stream().sorted()

多字段排序

List<HumanDetailDownloadVO> collect = dataList.stream().sorted(// 日期 倒序  Comparator.comparing(HumanDetailDownloadVO::getDate_str, Comparator.reverseOrder())// 仓id 倒序 .thenComparing(HumanDetailDownloadVO::getSite_code, Comparator.reverseOrder())// 用户名升序  自定义比较器  拼音排序.thenComparing(HumanDetailDownloadVO::getUser_name, new ChineseComparator())// 大类code 升序.thenComparing(HumanDetailDownloadVO::getPosition_code, Comparator.naturalOrder())// 小类code 升序.thenComparing(HumanDetailDownloadVO::getTask_code, Comparator.naturalOrder())).collect(Collectors.toList());

拼音排序：

引入jar包:

<!--        汉字拼音排序--><dependency><groupId>com.belerweb</groupId><artifactId>pinyin4j</artifactId><version>2.5.1</version></dependency>

自定义比较器：

package XXXXXXXXXXXXXXXX;import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;public class ChineseComparator implements Comparator<String> {HanyuPinyinOutputFormat pinyinOutputFormat = new HanyuPinyinOutputFormat();@Overridepublic int compare(String o1, String o2) {String pinyin1 = null;String pinyin2 = null;try {pinyin1 = PinyinHelper.toHanYuPinyinString(o1, pinyinOutputFormat, " ", true);pinyin2 = PinyinHelper.toHanYuPinyinString(o2, pinyinOutputFormat, " ", true);System.out.println("pinyin1=" + pinyin1 + ", pinyin2=" + pinyin2);} catch (Exception e) {e.printStackTrace();}return pinyin1.compareTo(pinyin2);}}

结束。