java中将List<String>中的元素拼接成字符串,逗号隔开 2022-08-15 11:49:54 List<String> list=newArrayList<>(); list.add("张三"); list.add("李四");String name= list.stream().map(String::valueOf).collect(Collectors.joining(","));System.out.println(name);//输出 张三,李四