S3K3针对用户注册案例简单介绍了如何使用 DDD

原文：S3K3针对用户注册案例简单介绍了如何使用 DDD

S3K3针对用户注册案例简单介绍了如何使用 DDD，接下来我将继续针对这个例子做一下补充。s3k3 先将User模型丰富起来，因为目前看上去他和贫血模型还没有啥大的区别。

首先还是由领域专家来说明业务，他由提出了用户注册成功后需要完善个人信息，这些信息包括姓名、生日、手机号。还需要用户提供一些联系信息，如果地址，邮编等。那么我们就可以根据业务定义方法了。昨天netfocus兄指正了loginid所产生的歧义，表示认为，所以今天一并修改了一下。

public class AddressInfo

{

public AddressInfo(string province, string city, string address, string postcode)

{

this.Province = province;

this.City = city;

this.Address = address;

this.Postcode = postcode;

}

public string Province { get; private set; }

public string City { get; private set; }

public string Address { get; private set; }

public string Postcode { get; private set; }

}

public class User

{

public User(string name, string password, string email)

{

this.Name = name;

this.Password = password;

this.Email = email;

}

public string Id { get; private set; }

public string Name { get; private set; }

public string Password { get; private set; }

public string RealName { get; private set; }

public string Email { get; private set; }

public string Cellphone { get; private set; }

public string Birthday { get; private set; }

public AddressInfo Address { get; private set; }

public void UpdateBasicInfo(string realName, string birthday, string cellphone)

{

this.RealName = realName;

this.Birthday = birthday;

this.Cellphone = cellphone;

}

public void UpdateAddress(AddressInfo address)

{

this.Address = address;

}

}

那么前端的代码也很简单

public class UserController

{

private readonly IUserRepository _userRepository;

public void SetProfile(FormCollection form)

{

var user = _userRepository.Get(form.Get("id"));

user.UpdateBasicInfo(form.Get("name"), form.Get("birthday"), form.Get("cellphone"));

}

public void SetAddress(FormCollection form)

{

var user = _userRepository.Get(form.Get("id"));

var address = new AddressInfo(form.Get("province"), form.Get("city"),

form.Get("address"), form.Get("postcode"));

user.UpdateAddress(address);

}

}

以上的代码很好理解，只是设计了一个AddressInfo的值对象。

接下来将演示一下用户登录验证和修改密码。一般的做法：

public interface IUserRepository

{

User GetByName(string loginId);

}

public class UserController

{

private readonly IUserRepository _userRepository;

public UserController(IUserRepository userRepository)

{

this._userRepository = userRepository;

}

public void Logon(FormCollection form)

{

User user = _userRepository.GetByName(form.Get("LoginId"));

if (user == null)

throw new Exception("loginId", "账号不存在。");

if (user.Password != form.Get("Password"))

throw new Exception("password", "密码不正确。");

FormsAuthentication.SetAuthCookie(user.Name, createPersistentCookie);

}

}

请注意上述代码比较密码是错误的方式，因为上一篇说明了密码是加过密的。所以要修改一下，首先要注入IEncryptionService，那么就会这样判断