业务背景:
某个数据库字段,存储的是逗号分隔的id,可能是Integer也可能是Long型的,比如:1,2,3等;需要转换成Long型的List或者Integer型的List,怎么做更简便??
见代码:
//You can use the Lambda functions of Java 8 to achieve this without looping
//来自:http://stackoverflow.com/questions/19946980/convert-string-to-listlong
String ids= "1,2,3,4,5,6";
List<Long> listIds = Arrays.asList(ids.split(",")).stream().map(s -> Long.parseLong(s.trim())).collect(Collectors.toList());
System.out.println(Arrays.toString(listIds .toArray()));//[1,2,3,3,4,5,6]