Guava 的 API 对字符串去空格，去空值，list去空值null

String a = ",abcd,,efg,l";System.out.println(Splitter.on(",").trimResults().omitEmptyStrings().splitToList(a));// 依次 join 多个字符串，Joiner 是 Guava 提供的 APIJoiner joiner = Joiner.on(",").skipNulls();String

飞翔的羽翼

1335人浏览 · 2020-09-23 11:11:25

飞翔的羽翼 · 2020-09-23 11:11:25 发布

 String a = ",abcd,,efg,l";
     System.out.println(Splitter.on(",").trimResults().omitEmptyStrings().splitToList(a));

     // 依次 join 多个字符串，Joiner 是 Guava 提供的 API
     Joiner joiner = Joiner.on(",").skipNulls();
     String result = joiner.join("hello",null,"china");
     System.out.println(  "依次 join 多个字符串:{}"+result  );

     List<String> list = Lists.newArrayList(new String[]{"hello","china",null});
     System.out.println("自动删除 list 中空值:{}" + joiner.join(list));