修改新增时，如选了默认地址，先清除当前默认地址

src/main/java/com/peanut/modules/common/service/UserAddressService.java

@@ -12,6 +12,6 @@ public interface UserAddressService extends IService<UserAddress> {
 
     UserAddressVo getAddressName(UserAddressVo vo, String regionCode);
 
-    int getUserDefaultAddressCount(Integer userId);
+    boolean clearUserDefaultAddress(Integer userId);
 
 }

src/main/java/com/peanut/modules/common/service/impl/UserAddressServiceImpl.java

@@ -63,10 +63,12 @@ public class UserAddressServiceImpl extends ServiceImpl<UserAddressDao, UserAddr
         return vo;
     }
 
-    public int getUserDefaultAddressCount(Integer userId) {
+    public boolean clearUserDefaultAddress(Integer userId) {
         QueryWrapper<UserAddress> queryWrapper = new QueryWrapper<>();
         queryWrapper.eq("user_id", userId);
         queryWrapper.eq("is_default", 1);
-        return this.count(queryWrapper);
+        UserAddress userAddress = this.getOne(queryWrapper);
+        userAddress.setIsDefault(0);
+        return this.updateById(userAddress);
     }
 }