fix

wholesale/src/main/java/com/yhlxj/service/code/impl/ExchangeCodeServiceImpl.java

@@ -63,7 +63,7 @@ public class ExchangeCodeServiceImpl implements ExchangeCodeService {
 		int update = webWholesaleOrderDonCodeRelateMapper.update(null, Wrappers.lambdaUpdate(WebWholesaleOrderDonCodeRelate.class)
 				.set(WebWholesaleOrderDonCodeRelate::getDhUserId, userId)
 				.eq(WebWholesaleOrderDonCodeRelate::getId, webWholesaleOrderDonCodeRelate.getId())
-				.eq(WebWholesaleOrderDonCodeRelate::getDhUserId, 0));
+				.isNull(WebWholesaleOrderDonCodeRelate::getDhUserId));
 		if (update == 0) {
 			throw BusinessRuntimeException.getInstance("兑换码已使用");
 		}