新增对账重复提醒采用Set去除重复数据

src/main/java/com/uas/platform/b2b/controller/SaleApCheckController.java

@@ -211,7 +211,7 @@ public class SaleApCheckController {
 	@RequestMapping(value = "/operation/save", method = RequestMethod.POST)
 	public ModelMap saveApCheck(@RequestBody String json) {
 		ModelMap map = new ModelMap();
-		List<String> alters = new ArrayList<String>();
+		Set<String> alters = new HashSet<>();
 		PurchaseApCheck apCheck = FlexJsonUtils.fromJson(json, PurchaseApCheck.class);
 		if (apCheck != null) {
 			for (PurchaseApCheckItem item : apCheck.getItems()) {