.net core2.0下使用Identity改用dapper存储数据(实例讲解)

前言、

已经好多天没写博客了，鉴于空闲无聊之时又兴起想写写博客，也当是给自己做个笔记。过了这么些天，我的文笔还是依然那么烂就请多多谅解了。今天主要是分享一下在使用.net core2.0下的实际遇到的情况。在使用webapi时用了identity做用户验证。官方文档是的是用EF存储数据来使用dapper，因为个人偏好原因所以不想用EF。于是乎就去折腾。改成使用dapper做数据存储。于是就有了以下的经验。

一、使用Identity服务

先找到Startup.cs 这个类文件 找到 ConfigureServices 方法

services.AddIdentity<ApplicationUser, ApplicationRole>().AddDefaultTokenProviders();//添加Identityservices.AddTransient<IUserStore<ApplicationUser>, CustomUserStore>();services.AddTransient<IRoleStore<ApplicationRole>, CustomRoleStore>();string connectionString = Configuration.GetConnectionString("SqlConnectionStr");services.AddTransient<SqlConnection>(e => new SqlConnection(connectionString));services.AddTransient<DapperUsersTable>();

然后在 Configure 方法 的 app.UseMvc() 前加入下列代码，net core 1.0的时候是app.UseIdentity() 现在已经弃用改为以下方法。

//使用验证app.UseAuthentication();

这里的 ApplicationUser 是自定义的一个用户模型 具体是继承 IdentityUser 继承它的一些属性

public class ApplicationUser :IdentityUser {  public string AuthenticationType { get; set; }  public bool IsAuthenticated { get; set; }  public string Name { get; set; } }

这里的 CustomUserStore 是自定义提供用户的所有数据操作的方法的类它需要继承三个接口：IUserStore，IUserPasswordStore，IUserEmailStore

IUserStore<TUser>接口是在用户存储中必须实现的唯一接口。 它定义了用于创建、 更新、 删除和检索用户的方法。

IUserPasswordStore<TUser>接口定义实现以保持经过哈希处理的密码的方法。 它包含用于获取和设置工作经过哈希处理的密码，以及用于指示用户是否已设置密码的方法的方法。

IUserEmailStore<TUser>接口定义实现以存储用户电子邮件地址的方法。 它包含用于获取和设置的电子邮件地址和是否确认电子邮件的方法。

这里跟.net core 1.0的实现接口方式有点不同。需要多实现 IUserEmailStore 才能不报错

具体代码如下。以供大家参考。

CustomUserStore

using Microsoft.AspNetCore.Identity;using System;using System.Threading.Tasks;using System.Threading;namespace YepMarsCRM.Web.CustomProvider{ /// <summary> /// This store is only partially implemented. It supports user creation and find methods. /// </summary> public class CustomUserStore : IUserStore<ApplicationUser>,  IUserPasswordStore<ApplicationUser>,  IUserEmailStore<ApplicationUser> {  private readonly DapperUsersTable _usersTable;  public CustomUserStore(DapperUsersTable usersTable)  {   _usersTable = usersTable;  }  #region createuser  public async Task<IdentityResult> CreateAsync(ApplicationUser user,   CancellationToken cancellationToken = default(CancellationToken))  {   cancellationToken.ThrowIfCancellationRequested();   if (user == null) throw new ArgumentNullException(nameof(user));   return await _usersTable.CreateAsync(user);  }  #endregion  public async Task<IdentityResult> DeleteAsync(ApplicationUser user,   CancellationToken cancellationToken = default(CancellationToken))  {   cancellationToken.ThrowIfCancellationRequested();   if (user == null) throw new ArgumentNullException(nameof(user));   return await _usersTable.DeleteAsync(user);  }  public void Dispose()  {  }  public Task<ApplicationUser> FindByEmailAsync(string normalizedEmail, CancellationToken cancellationToken)  {   throw new NotImplementedException();  }  public async Task<ApplicationUser> FindByIdAsync(string userId,   CancellationToken cancellationToken = default(CancellationToken))  {   cancellationToken.ThrowIfCancellationRequested();   if (userId == null) throw new ArgumentNullException(nameof(userId));   Guid idGuid;   if (!Guid.TryParse(userId, out idGuid))   {    throw new ArgumentException("Not a valid Guid id", nameof(userId));   }   return await _usersTable.FindByIdAsync(idGuid);  }  public async Task<ApplicationUser> FindByNameAsync(string userName,   CancellationToken cancellationToken = default(CancellationToken))  {   cancellationToken.ThrowIfCancellationRequested();   if (userName == null) throw new ArgumentNullException(nameof(userName));   return await _usersTable.FindByNameAsync(userName);  }  public Task<string> GetEmailAsync(ApplicationUser user, CancellationToken cancellationToken)  {   cancellationToken.ThrowIfCancellationRequested();   if (user == null) throw new ArgumentNullException(nameof(user));   return Task.FromResult(user.Email);  }  public Task<bool> GetEmailConfirmedAsync(ApplicationUser user, CancellationToken cancellationToken)  {   throw new NotImplementedException();  }  public Task<string> GetNormalizedEmailAsync(ApplicationUser user, CancellationToken cancellationToken)  {   throw new NotImplementedException();  }  public Task<string> GetNormalizedUserNameAsync(ApplicationUser user, CancellationToken cancellationToken)  {   throw new NotImplementedException();  }  public Task<string> GetPasswordHashAsync(ApplicationUser user, CancellationToken cancellationToken)  {   cancellationToken.ThrowIfCancellationRequested();   if (user == null) throw new ArgumentNullException(nameof(user));   return Task.FromResult(user.PasswordHash);  }  public Task<string> GetUserIdAsync(ApplicationUser user, CancellationToken cancellationToken)  {   cancellationToken.ThrowIfCancellationRequested();   if (user == null) throw new ArgumentNullException(nameof(user));   return Task.FromResult(user.Id.ToString());  }  public Task<string> GetUserNameAsync(ApplicationUser user, CancellationToken cancellationToken)  {   cancellationToken.ThrowIfCancellationRequested();   if (user == null) throw new ArgumentNullException(nameof(user));   return Task.FromResult(user.UserName);  }  public Task<bool> HasPasswordAsync(ApplicationUser user, CancellationToken cancellationToken)  {   throw new NotImplementedException();  }  public Task SetEmailAsync(ApplicationUser user, string email, CancellationToken cancellationToken)  {   throw new NotImplementedException();  }  public Task SetEmailConfirmedAsync(ApplicationUser user, bool confirmed, CancellationToken cancellationToken)  {   throw new NotImplementedException();  }  public Task SetNormalizedEmailAsync(ApplicationUser user, string normalizedEmail, CancellationToken cancellationToken)  {   cancellationToken.ThrowIfCancellationRequested();   if (user == null) throw new ArgumentNullException(nameof(user));   if (normalizedEmail == null) throw new ArgumentNullException(nameof(normalizedEmail));   user.NormalizedEmail = normalizedEmail;   return Task.FromResult<object>(null);  }  public Task SetNormalizedUserNameAsync(ApplicationUser user, string normalizedName, CancellationToken cancellationToken)  {   cancellationToken.ThrowIfCancellationRequested();   if (user == null) throw new ArgumentNullException(nameof(user));   if (normalizedName == null) throw new ArgumentNullException(nameof(normalizedName));   user.NormalizedUserName = normalizedName;   return Task.FromResult<object>(null);  }  public Task SetPasswordHashAsync(ApplicationUser user, string passwordHash, CancellationToken cancellationToken)  {   cancellationToken.ThrowIfCancellationRequested();   if (user == null) throw new ArgumentNullException(nameof(user));   if (passwordHash == null) throw new ArgumentNullException(nameof(passwordHash));   user.PasswordHash = passwordHash;   return Task.FromResult<object>(null);  }  public Task SetUserNameAsync(ApplicationUser user, string userName, CancellationToken cancellationToken)  {   throw new NotImplementedException();  }  public Task<IdentityResult> UpdateAsync(ApplicationUser user, CancellationToken cancellationToken)  {   return _usersTable.UpdateAsync(user);  } }}