list和以逗号分割的String相互转换(guava)

代码以下:

import com.alibaba.fastjson.JSON;
import com.google.common.base.Joiner;
import com.google.common.collect.Lists;
import com.google.common.base.Splitter;

   List<String> list = Lists.newArrayList("a","b","c"," ");
   String s = Joiner.on(",").join(list); // 以逗号分割
   System.out.println(s); // a,b,c, 
   // 去先后空格&&去空string
   Splitter split = Splitter.on(',').trimResults().omitEmptyStrings();
   List<String> list1 = split.splitToList(s);
   System.out.println(JSON.toJSONString(list1)); // ["a","b","c"]