abp vnext默认是用邮箱是必填项，但是有时候邮箱不一定是必填项目，所以为了解决这个问题，对新增用户的时候进行字段的重写。当然用户编辑的时候，也要修改对接的接口。这里我出入参数据不变，修改了字段的校验。

代码粘贴这里，因为用户信息这里需要扩展用户头像、微信等字段。扩展字段也在里面体现了。不需要该字段的，删除即可。

用户的创建修改，需要相应的权限，这里的权限也是abp字段的权限，如果不想用abp自带的权限，删除即可。

例如：[Authorize(IdentityPermissions.Users.Create)]

    /// <summary>
    /// 创建用户
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [Authorize(IdentityPermissions.Users.Create)]
    public async Task<IdentityUserDto> CreateUsersAsync(UserInfoCreateDto input)
    {
        var userEntity = await _userManager.FindByNameAsync(input.UserName);
        if (userEntity != null) throw new Exception("用户名已被创建，请修改后重试");
        await _identityOptions.SetAsync();
        var entity = new UsersInfoDto()
        {
            Email = input.Email,
            Name = input.Name,
            PasswordHash = input.Password,
            PhoneNumber = input.PhoneNumber,
            UserName = input.UserName,
            EmpNo = (string)(input.ExtraProperties.FirstOrDefault(x => x.Key == "EmpNo").Value??"".ToString()),
            WeChat = (string)(input.ExtraProperties.FirstOrDefault(x => x.Key == "WeChat").Value ?? "".ToString()),
            Avatar = (string)(input.ExtraProperties.FirstOrDefault(x => x.Key == "Avatar").Value ?? "".ToString())
        };
        entity.SetProperty("EmpNo", entity.EmpNo);
        entity.SetProperty("WeChat", entity.WeChat);
        entity.SetProperty("Avatar", entity.Avatar);
        var user = ObjectMapper.Map<UsersInfoDto, IdentityUser>(entity);
        entity.PasswordHash = _passwordHasher.HashPassword(user, entity.PasswordHash);

        var userPasswordHash = ObjectMapper.Map<UsersInfoDto, IdentityUser>(entity);
        await _identityUserRepository.InsertAsync(userPasswordHash);

        if (input.RoleNames.Length > 0)
        {
            await _userManager.SetRolesAsync(user, input.RoleNames);
        }

        await CurrentUnitOfWork.SaveChangesAsync();
        return ObjectMapper.Map<IdentityUser, IdentityUserDto>(userPasswordHash);
    }
    /// <summary>
    /// 检查用户名是否存在
    /// </summary>
    /// <param name="username">用户名</param>
    /// <returns></returns>
    public async Task<bool> CheckUserNameIsExist(string username)
    {
        var user = await _userManager.FindByNameAsync(username);
        if (user == null) return false;
        return true;
    }
    /// <summary>
    /// 密码重置
    /// </summary>
    /// <param name="id"></param>
    /// <param name="input"></param>
    /// <returns></returns>
    [Authorize(IdentityPermissions.Users.Update)]
    public async Task<string> PasswordReset(Guid id, UserInfoUpdateDto input)
    {
        var user = await _userManager.FindByIdAsync(id.ToString());
        if (user == null) throw new Exception("该用户不存在");
        if (input.Password.IsNullOrEmpty())
        {
            input.Password = "1q2w3e*";
        }
        await _userManager.RemovePasswordAsync(user);
        await _userManager.AddPasswordAsync(user, input.Password);
        return input.Password;
    }
    /// <summary>
    /// 更新用户，用户名禁止编辑
    /// </summary>
    /// <param name="id"></param>
    /// <param name="input"></param>
    /// <returns></returns>
    [Authorize(IdentityPermissions.Users.Update)]
    public async Task<IdentityUserDto> UpdateUsersAsync(Guid id, UserInfoUpdateDto input)
    {

        var user = await _userManager.FindByIdAsync(id.ToString());
        if (user == null) return default;

        await _identityOptions.SetAsync();
        await _userManager.SetEmailAsync(user, input.Email);
        await _userManager.SetPhoneNumberAsync(user, input.PhoneNumber);

        user.Name = input.Name;
        user.Surname = input.Surname;

        input.MapExtraPropertiesTo(user);
        user.SetProperty("EmpNo", input.ExtraProperties.FirstOrDefault(x => x.Key == "EmpNo").Value??"".ToString());
        user.SetProperty("WeChat", input.ExtraProperties.FirstOrDefault(x => x.Key == "WeChat").Value??"".ToString());
        user.SetProperty("Avatar", input.ExtraProperties.FirstOrDefault(x => x.Key == "Avatar").Value??"".ToString());

        if (!input.Password.IsNullOrEmpty())
        {
            await _userManager.RemovePasswordAsync(user);
            await _userManager.AddPasswordAsync(user, input.Password);
        }

        if (input.RoleNames.Length > 0)
        {
            await _userManager.SetRolesAsync(user, input.RoleNames);
        }

        await _userManager.UpdateAsync(user);

        await CurrentUnitOfWork.SaveChangesAsync();

        return ObjectMapper.Map<IdentityUser, IdentityUserDto>(user);
    }

相关的构造函数如下所示：

 private readonly IdentityUserManager _userManager;
    private readonly IOptions<IdentityOptions> _identityOptions;
    private readonly IConfiguration _configuration;
    private readonly IHttpContextAccessor _httpContextAccessor;
    private readonly IIdentityUserRepository _identityUserRepository;
    private readonly IPasswordHasher<IdentityUser> _passwordHasher;

最重要的一点是，using引用命名空间的时候，优先选择 Volo.Abp.xxx的命名，不要选择using Microsoft.AspNetCore.Identity....微软自带的，因为abp默认继承了Microsoft，会造成代码冲突。