1,將數組的長度定義成集合的長度
List<ElemeterInfo> eleSeqList = elemeterMapper.getEleSeqByterminaluuid(terminaluuid);
String[] eleseqArray = new String[eleSeqList.size()];
2,循環集合
int i = 0; for (ElemeterInfo elemeterInfo : eleSeqList) { Integer eleseq = elemeterInfo.getSerialportseq(); eleseqArray[i++]=String.valueOf(eleseq); }