List转string 逗号分隔

List转string 逗号分隔

1、将list转化为逗号分割的字符串

String str = String.join(",", list);
 
String str = StringUtils.json(list.toArray(), ",");　　

2、将逗号分隔的字符串转换为List

List<String> list = Arrays.asList(str.split(","));
 
List<String> list = Arrays.asList(StringUtils.split(str, ","));

3、将字符串中的字符替换

String newStr = str.replace("需替换的字符", "目标字符");