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update 计算退款金额

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autumn.g@foxmail.com
2023-09-14 17:36:45 +08:00
parent ed031749e6
commit 74cf20b8a5
2 changed files with 63 additions and 43 deletions
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32
jsowell-pile/src/main/java/com/jsowell/pile/service/orderlogic/AbstractOrderLogic.java
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@@ -405,41 +405,41 @@ public abstract class AbstractOrderLogic implements InitializingBean {
return resultMap;
}
public static void main(String[] args) {
BigDecimal orderAmount= new BigDecimal("0.06");
List<OrderPayRecord> payRecordList = Lists.newArrayList();
payRecordList.add(OrderPayRecord.builder().deductionRecord("[{\"paymentId\":\"002212023091416010010548305359259512832\",\"amount\":0.97},{\"paymentId\":\"002212023091416110010548307874223849472\",\"amount\":1.00}]").build());
}
/**
* 计算解冻金额
* @param orderAmount 订单消费金额
* @param payRecordList 订单支付记录
*/
protected List<Map<String, Object>> calculateUnfreezeAmount(BigDecimal orderAmount, List<OrderPayRecord> payRecordList) {
public List<Map<String, Object>> calculateUnfreezeAmount(BigDecimal orderAmount, List<OrderPayRecord> payRecordList) {
List<Map<String, Object>> resultList = Lists.newArrayList();
BigDecimal tempAmount = new BigDecimal(orderAmount.toString()); // 临时金额
for (OrderPayRecord record : payRecordList) {
// String deductionRecord = record.getDeductionRecord();
// JSONObject jsonObject = JSON.parseObject(deductionRecord);
List<JSONObject> jsonObjects = parseDeductionRecord(record.getDeductionRecord());
for (JSONObject object : jsonObjects) {
String paymentId = object.getString("paymentId");
BigDecimal payAmount = object.getBigDecimal("amount"); // 此交易单支付的金额
// 该笔支付扣除金额
BigDecimal deductionAmount;
// 该笔支付解冻金额
BigDecimal unfreezeAmount = null;
// 临时消费金额 = 临时消费金额 - 该笔交易的剩余金额
tempAmount = tempAmount.subtract(payAmount);
if (tempAmount.compareTo(BigDecimal.ZERO) >= 0) {
// 计算以后，大于等于0，说明这笔支付剩余金额需要扣完，还要继续扣下一笔
deductionAmount = payAmount;
unfreezeAmount = payAmount.subtract(deductionAmount); // 支付金额 - 扣除金额 = 需要退回的金额
BigDecimal unfreezeAmount;
if (tempAmount.compareTo(BigDecimal.ZERO) <= 0) {
unfreezeAmount = payAmount;
Map<String, Object> map = Maps.newHashMap();
map.put("paymentId", paymentId);
map.put("unfreezeAmount", unfreezeAmount);
resultList.add(map);
} else {
// 如果小于0，则说明该笔交易的剩余金额用不完，扣除金额等于临时消费金额，并结束循环
deductionAmount = payAmount.add(tempAmount); // 该笔交易的剩余金额加上一个负数临时消费金额，就是该笔交易扣除金额
unfreezeAmount = payAmount.subtract(deductionAmount); // 支付金额 - 扣除金额 = 需要退回的金额
BigDecimal refundPerPayment = tempAmount.min(payAmount);
unfreezeAmount = payAmount.subtract(refundPerPayment);
tempAmount = tempAmount.subtract(refundPerPayment);
Map<String, Object> map = Maps.newHashMap();
map.put("paymentId", paymentId);
map.put("unfreezeAmount", unfreezeAmount);