集合分段

int size = b2BSettlementDetails.size();
for (int begin = 0; begin < size; begin = begin + 10000) {
　　int end = (begin + 10000 > size ? size : begin + 10000);
　　List<B2BSettlementDetail> list = new ArrayList(b2BSettlementDetails.subList(begin, end));
　　b2bSettlementDetailExtendMapper.updateSettlementDetailExtendByDetails(settlementNo, settlement.getCreateBy(),list);
}