回滚联系人修改内容，单独提交

src/main/java/cn/quantgroup/xyqb/service/user/impl/ContactServiceImpl.java

@@ -35,23 +35,6 @@ public class ContactServiceImpl implements IContactService {
         if (trim) {
             trim(contacts);
         }
-        // 按修改时间倒序排列
-        if(!CollectionUtils.isEmpty(contacts)){
-            Collections.sort(contacts, (o1, o2) -> {
-                Date paidAt1 = o1.getUpdateAt();
-                Date paidAt2 = o2.getUpdateAt();
-                if(paidAt1 == null && paidAt2 == null) {
-                    return 0;
-                }
-                if(paidAt1 == null) {
-                    return -1;
-                }
-                if(paidAt2 == null) {
-                    return -1;
-                }
-                return paidAt1.compareTo(paidAt2);
-            });
-        }
         return contacts;
     }
 
@@ -118,17 +101,21 @@ public class ContactServiceImpl implements IContactService {
      * @param contacts - 新联系人列表
      */
     private void mergeContacts(Long userId, List<Contact> contacts) {
+        // 当前联系人列表
+        List<Contact> userContact = contactRepository.findByUserId(userId);
+        int userContactCount = (userContact == null) ? 0 : userContact.size();
         Timestamp now = new Timestamp(System.currentTimeMillis());
         for (int i = 0; i < contacts.size(); i++) {
             Contact c = contacts.get(i);
+            c.setId(null);
             c.setUserId(userId);
-            if(Objects.isNull(c.getRelation())){
-                c.setRelation(Relation.OTHER);
-            }
-            if(Objects.isNull(c.getId())){
+            c.setRelation(c.getRelation() == null ? Relation.OTHER : c.getRelation());
             c.setCreatedAt(now);
-            }
             c.setUpdateAt(now);
+            if (userContactCount > i) {
+                c.setId(userContact.get(i).getId());
+                c.setCreatedAt(userContact.get(i).getCreatedAt() == null ? now : userContact.get(i).getCreatedAt());
+            }
         }
     }
 }