java8 新特性 之 将指定格式的字符串转化成List

import org.apache.commons.lang3.StringUtils;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;


public class StringConvertList {




   public static void main(String[] args) {
      //java8特性//将以逗号分割的字符串转换成List<Long>类型
      String ids= "1,2,3,4,5,6";
      List<Long> idList = Arrays.asList(ids.split(",")).stream().map(s -> Long.parseLong(s.trim())).collect(Collectors.toList());
      System.out.println( idList.toString());

     //将List<Long>类型转换成以逗号分割的字符串
      String list = StringUtils.join(idList, ",");
      String str= StringUtils.strip(list.toString(), "[]");
      System.out.println(str);

   }