数组:

public static void main(String[] args) {
 List<String> list = new ArrayList<String>();
 list.add("1");
 list.add("2");
 list.add("3"); System.out.println(list.toString());
 System.out.println(StringUtils.strip(list.toString(),"[]"));
}

结果:[1, 2, 3]   1, 2, 3

字符串:

String str=list.get(0).get("phoneList");
String phoneIdList =StringUtils.strip(str,"[]");