List<String> stuList = java.util.Arrays.asList( map.get("stus").toString().split("、"));
仅针对特定的 String
String str = "199,99,243,34,52,57,193,277,194,284,275,270,274,54,238,259,225,262,32,53,31,196,33,286,246,285,94,200,276,269,242,271,40,272,278,251,5,288,11,283,245,253,58,241,282,197,237,93,55,198,273,235,250,4,287,293,291,290,298,292,294,297,305,257,309,302,304,300,318,301,307,310,311,312,303,295,316,317,324,327,321,254";
List<String> strList = java.util.Arrays.asList(str.split(","));