characterIds = "1";
String[] split = characterIds.split(",");
int[] ints = Arrays.asList(split).stream().mapToInt(Integer::parseInt).toArray();
List<Integer> collect = Arrays.stream(ints).boxed().collect(Collectors.toList());
string字符串转Int列表List
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Origin blog.csdn.net/csdnerM/article/details/118152492
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