Java将原数组变小 java怎么把数组转字符串

java 把字符串数组转List

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String idsStringList = “1,2,3,4,5”;
 List idsList = new ArrayList<>();
 if(StringUtils.isNotBlank(menuIdStr)){
 List idsStringList = Arrays.asList(menuIdStr.split(","));
 CollectionUtils.collect(idsStringList, new Transformer() {
 @Override
 public Object transform(Object o) {
 return Integer.valueOf(o.toString());
 }
 }, idsList);
 }