描述：取出 cp中非 DataTime，下面程式碼是否合理，是否有對deviceDataMap 並發問題？

Map> deviceDataMap = new HashMap<>();
String cp = "DataTime=20040506010101;SB1-RT=1.1;SB2-RT=2.1";

List cpValusList = Arrays.asList(cp.split(";"));

cpValusList.stream().filter(item -> !item.contains("DataTime=")).forEach(item ->{ String deviceId = item.substring(0,item.indexOf("-")); if(!deviceDataMap.containsKey(deviceId)){ Map oneDeviceIdValusMap = new HashMap<>(); List deviceIdValueList = Arrays.asList(item.split(",")); deviceIdValueList.forEach(value->{ String[] temp = value.split("="); oneDeviceIdValusMap.put(temp[0], temp[1]); }); deviceDataMap.put(deviceId, oneDeviceIdValusMap); } });