List转string 逗号分隔(转载)
转载来源:https://www.cnblogs.com/hmgx/p/11942342.html
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");
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