源码在这里：https://github.com/darrenji/UseIdentityCRUDUserInMVC，本地下载
在VS2013中创建一个MVC项目，用默认的"无身份验证"作为身份验证机制。
通过控制台下载Bootstrap。
Install-Package -version 3.0.3 bootstrap
下载成功后，在解决方案下的Content和Scripts多了该版本的css和js文件。
把创建项目默认HomeController中的所有Action以及/Views/Home下的所有视图删除。
热热身
先来做一个简单练习。
在HomeController中的Index方法中，把一个字典传递给视图。
public class HomeController : Controller
{
public ActionResult Index()
{
Dictionary data = new Dictionary();
data.Add("placeholder", "placeholder");
return View(data);
}
}
_Layout.cshtml设置如下：
ASP.NET Identity实战
.container {padding-top:10px;}
.validation-summary-errors{color:red;}
@RenderBody()
@Scripts.Render("~/bundles/jquery")
@Scripts.Render("~/bundles/bootstrap")
@RenderSection("scripts", required: false)
Home/Index.cshtml视图中：
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
用户明细
@foreach (string key in Model.Keys)
{
@key
@Model[key]
}
20221022164636911.png
前期准备
分别安装如下组件。
Install-Package Microsoft.AspNet.Identity.EntityFramework –Version 2.0.0
Install-Package Microsoft.AspNet.Identity.OWIN -Version 2.0.0
Install-Package Microsoft.Owin.Host.SystemWeb -Version 2.1.0
配置Web.config如下：
以上，
增加了connectionStrings节点，将自动创建localdb数据库在appSettings节点中增加了一个key为owin:AppStartup项，这是确保OWIN运行正常的全局配置
在Models文件夹下创建如下类。
public class AppUser : IdentityUser
{
}
在解决方案下创建Infrastructure文件夹。
在Infrastructure文件夹下创建一个上下文类，需要实现IdentityDbContext接口。
public class AppIdentityDbContext : IdentityDbContext
{
public AppIdentityDbContext()
: base("IdentityDb")
{
}
static AppIdentityDbContext()
{
//使用EF Code First第一次创建的时候调用
Database.SetInitializer(new IdentityDbInit());
}
public static AppIdentityDbContext Create()
{
return new AppIdentityDbContext();
}
}
//初始化
public class IdentityDbInit : DropCreateDatabaseIfModelChanges
{
protected override void Seed(AppIdentityDbContext context)
{
PerformInitialSetup(context);
base.Seed(context);
}
//初始化工作
public void PerformInitialSetup(AppIdentityDbContext context)
{ }
}
在Infrastructure文件夹下创建一个管理用户的类，需要继承UserManager类。
还记得，先前在appSettings节点中配置了一个如下方式：
OWIN需要一个全局启动文件，默认会到项目的顶级命名空间下找IdentityConfig这个类。
那就在App_Start中创建IdentityConfig这个类，这个类在WebApplication4这个命名空间下。
namespace WebApplication4
{
public class IdentityConfig
{
public void Configuration(IAppBuilder app)
{
app.CreatePerOwinContext(AppIdentityDbContext.Create);
app.CreatePerOwinContext(AppUserManager.Create);
app.UseCookieAuthentication(new CookieAuthenticationOptions {
AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
LoginPath = new Microsoft.Owin.PathString("/Account/Login")
});
}
}
}
显示用户
创建AdminController，现在可以向视图传递所有的用户了，编写如下：
public class AdminController : Controller
{
public ActionResult Index()
{
return View(UserManager.Users);
}
private AppUserManager UserManager
{
get
{
return HttpContext.GetOwinContext().GetUserManager();
}
}
}
再创建Admin/Index.cshtml类型为IEnumerable的强类型视图。
@model IEnumerable
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
所有用户账户
| ID | Name | Email | | @if (Model.Count() == 0)
{
| 还没有创建用户 | }
else
{
foreach (WebApplication4.Models.AppUser user in Model)
{
| @user.Id | @user.UserName | @user.Email |
@using (Html.BeginForm("Delete", "Admin",
new { id = user.Id }))
{
@Html.ActionLink("编辑", "Edit", new { id = user.Id },
new { @class = "btn btn-primary btn-xs" })
删除
}
| }
}
@Html.ActionLink("创建用户", "Create", null, new { @class = "btn btn-primary" })
20221022164636912.png
创建用户
在Models文件夹下创建一个视图模型。
namespace WebApplication4.Models
{
public class CreateModel
{
public string Id { get; set; }
[Required]
public string Name { get; set; }
[Required]
public string Email { get; set; }
[Required]
public string Password { get; set; }
}
}
在AdminController中添加创建用户相关的方法。
public class AdminController : Controller
{
public ActionResult Index()
{
return View(UserManager.Users);
}
//创建显示
public ActionResult Create()
{
return View();
}
[HttpPost]
public async Task Create(CreateModel model)
{
if(ModelState.IsValid)
{
var user = new AppUser{UserName = model.Name, Email = model.Email};
IdentityResult result = await UserManager.CreateAsync(user, model.Password);
if(result.Succeeded)
{
return RedirectToAction("Index");
}else{
AddErrorsFromResult(result);
}
}
return View(model);
}
//创建接收
private void AddErrorsFromResult(IdentityResult result)
{
foreach(var error in result.Errors)
{
ModelState.AddModelError("", error);
}
}
private AppUserManager UserManager
{
get
{
return HttpContext.GetOwinContext().GetUserManager();
}
}
}
在Admin/Create.cshtml视图页中：
@model WebApplication4.Models.CreateModel
@{
ViewBag.Title = "Create";
Layout = "~/Views/Shared/_Layout.cshtml";
}
Create
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
创建用户
@Html.ValidationSummary(true)
@Html.LabelFor(model => model.Name, new { @class = "control-label col-md-2" })
@Html.EditorFor(model => model.Name)
@Html.ValidationMessageFor(model => model.Name)
@Html.LabelFor(model => model.Email, new { @class = "control-label col-md-2" })
@Html.EditorFor(model => model.Email)
@Html.ValidationMessageFor(model => model.Email)
@Html.LabelFor(model => model.Password, new { @class = "control-label col-md-2" })
@Html.EditorFor(model => model.Password)
@Html.ValidationMessageFor(model => model.Password)
}
@Html.ActionLink("返回", "Index")
20221022164636913.png
点击"创建"按钮，创建成功返回显示用户页面。
20221022164636914.png
oh, my god,只是配置了一下就有数据了？ 数据在哪呢？
点击左上角的"服务器资源管理器"，右键"IdentityDb"，点击"刷新"。
20221022164636915.png
再打开AspNetUsers表，刚创建的用户赫然在列。
20221022164636916.png
好像还有点欠缺，用户输入密码的时候，总应该有些限制吧。
能想到的，ASP.NET Identity都为我们准备好了。有一个PasswordValidator类就是干这个的。
在Infrastructure文件夹中创建一个PasswordValidator类的继承子类。
namespace WebApplication4.Infrastructure
{
public class CustomPasswordValidator : PasswordValidator
{
public override async Task[I] ValidateAsync(string pass)
{
IdentityResult result = await base.ValidateAsync(pass);
if (pass.Contains("12345"))
{
var errors = result.Errors.ToList();
errors.Add("密码中包含太多连续数字");
result = new IdentityResult(errors);
}
return result;
}
}
}
然后需要把这个规则告诉UserManager。
namespace WebApplication4.Infrastructure
{
public class AppUserManager : UserManager
{
public AppUserManager(IUserStore store) : base(store) { }
public static AppUserManager Create(IdentityFactoryOptions options, IOwinContext context)
{
//identity ef上下文
AppIdentityDbContext db = context.Get();
//与identity ef相关的UserStore
IUserStore us = new UserStore(db);
AppUserManager manager = new AppUserManager(us);
//密码相关
manager.PasswordValidator = new CustomPasswordValidator {
RequiredLength = 6,
RequireNonLetterOrDigit = false,
RequireDigit = false,
RequireLowercase = true,
RequireUppercase = true
};
return manager;
}
}
}
再次运行程序，创建用户页面，尝试输入不通过的密码。
20221022164636917.png
不过，关于密码的规则，似乎可以在View Model的验证层面就可以解决掉。
编辑和删除用户
在AdminController中增加编辑和删除的部分。
public class AdminController : Controller
{
public ActionResult Index()
{
return View(UserManager.Users);
}
//创建显示
public ActionResult Create()
{
return View();
}
//创建接收
[HttpPost]
public async Task Create(CreateModel model)
{
if(ModelState.IsValid)
{
var user = new AppUser{UserName = model.Name, Email = model.Email};
IdentityResult result = await UserManager.CreateAsync(user, model.Password);
if(result.Succeeded)
{
return RedirectToAction("Index");
}else{
AddErrorsFromResult(result);
}
}
return View(model);
}
//编辑显示
public async Task Edit(string id)
{
AppUser user = await UserManager.FindByIdAsync(id);
if(User != null)
{
CreateModel createModel = new CreateModel();
createModel.Id = user.Id;
createModel.Email = user.Email;
createModel.Name = user.UserName;
createModel.Password = user.PasswordHash;
return View(createModel);
}
else
{
return RedirectToAction("Index");
}
}
//接收编辑
[HttpPost]
public async Task Edit(CreateModel createModel)
{
if(ModelState.IsValid)
{
AppUser user = await UserManager.FindByIdAsync(createModel.Id);
if (user != null)
{
//关于邮箱
user.Email = createModel.Email;
IdentityResult validEmail = await UserManager.UserValidator.ValidateAsync(user);
if (!validEmail.Succeeded)
{
AddErrorsFromResult(validEmail);
}
user.UserName = createModel.Name;
//关于密码
IdentityResult validPass = null;
if (createModel.Password != string.Empty)
{
validPass = await UserManager.PasswordValidator.ValidateAsync(createModel.Password);
if (validPass.Succeeded)
{
user.PasswordHash = UserManager.PasswordHasher.HashPassword(createModel.Password);
}
else
{
AddErrorsFromResult(validPass);
}
}
user.Email = createModel.Email;
//验证结果
if ((validEmail.Succeeded && validPass == null) || (validEmail.Succeeded
&& createModel.Password != string.Empty && validPass.Succeeded))
{
IdentityResult result = await UserManager.UpdateAsync(user);
if (result.Succeeded)
{
return RedirectToAction("Index");
}
else
{
AddErrorsFromResult(result);
}
}
else
{
ModelState.AddModelError("", "无此用户");
}
}
return View(createModel);
}
else
{
return View(createModel);
}
}
//删除
[HttpPost]
public async Task Delete(string id)
{
AppUser user = await UserManager.FindByIdAsync(id);
if(user != null)
{
IdentityResult result = await UserManager.DeleteAsync(user);
if(result.Succeeded)
{
return RedirectToAction("Index");
}
else
{
return View("Error", result.Errors);
}
}
else
{
return View("Error", new string[] { "没有此用户" });
}
}
private void AddErrorsFromResult(IdentityResult result)
{
foreach(var error in result.Errors)
{
ModelState.AddModelError("", error);
}
}
private AppUserManager UserManager
{
get
{
return HttpContext.GetOwinContext().GetUserManager();
}
}
}
Admin/Edit.cshtml视图。
@model WebApplication4.Models.CreateModel
@{
ViewBag.Title = "Edit";
Layout = "~/Views/Shared/_Layout.cshtml";
}
Edit
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
@Html.HiddenFor(model => model.Id)
@Html.LabelFor(model => model.Name, new { @class = "control-label col-md-2" })
@Html.EditorFor(model => model.Name)
@Html.ValidationMessageFor(model => model.Name)
@Html.LabelFor(model => model.Email, new { @class = "control-label col-md-2" })
@Html.EditorFor(model => model.Email)
@Html.ValidationMessageFor(model => model.Email)
@Html.LabelFor(model => model.Password, new { @class = "control-label col-md-2" })
@Html.EditorFor(model => model.Password)
@Html.ValidationMessageFor(model => model.Password)
}
@Html.ActionLink("返回", "Index")
另外，如果删除失败，跳转到Shared/Error.cshtml视图页。
@model IEnumerable
@{ ViewBag.Title = "Error";}
@switch (Model.Count())
{
case 0:
@: Something went wrong. Please try again
break;
case 1:
@Model.First();
break;
default:
@: 发现如下错误:
@foreach (string error in Model)
{
@error
}
break;
}
@Html.ActionLink("确定", "Index", null, new { @class = "btn btn-default" })
至此，使用ASP.NET Identy实现对用户的增删改查完毕，ASP.NET Identity真的很好很强大！
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发表于 2023-5-4 11:24:05