带有MySQL数据库的ASP.NET身份-如何在启动时添加Admin用户？
作者：互联网
我已经完成了有关如何使用具有ASP.NET标识的MySQL数据库的本教程/示例：
http://www.asp.net/identity/overview/getting-started/aspnet-identity-using-mysql-storage-with-an-entityframework-mysql-provider
现在,我想添加功能,以角色Admin开头创建Admin用户.过去,我使用SimpleMembership和本地“ SQL Server数据库”,这非常简单,现在我试图通过在“ MySqlInitializer”中添加用户来做到这一点.这是我正在尝试的代码：
MySqlInitializer
namespace IdentityMySQLDemo
{
public class MySqlInitializer : IDatabaseInitializer<ApplicationDbContext>
{
public void InitializeDatabase(ApplicationDbContext context)
{
if (!context.Database.Exists())
{
// if database did not exist before - create it
context.Database.Create();
}
else
{
// query to check if MigrationHistory table is present in the database
var migrationHistoryTableExists = ((IObjectContextAdapter)context).ObjectContext.ExecuteStoreQuery<int>(
string.Format(
"SELECT COUNT(*) FROM information_schema.tables WHERE table_schema = '{0}' AND table_name = '__MigrationHistory'",
"17817412_kontadb"));
// if MigrationHistory table is not there (which is the case first time we run) - create it
if (migrationHistoryTableExists.FirstOrDefault() == 0)
{
context.Database.Delete();
context.Database.Create();
}
}
Seed(context);
}
protected void Seed(ApplicationDbContext context)
{
var userManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext()));
var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(new ApplicationDbContext()));
const string name = "admin@example.com";
const string password = "Password";
const string roleName = "Admin";
//Create Role Admin if it does not exist
var role = roleManager.FindByName(roleName);
if (role == null)
{
role = new IdentityRole(roleName);
var roleresult = roleManager.Create(role);
}
var user = userManager.FindByName(name);
if (user == null)
{
user = new ApplicationUser { UserName = name, Email = name };
var result = userManager.Create(user, password);
result = userManager.SetLockoutEnabled(user.Id, false);
}
// Add user admin to Role Admin if not already added
var rolesForUser = userManager.GetRoles(user.Id);
if (!rolesForUser.Contains(role.Name))
{
var result = userManager.AddToRole(user.Id, role.Name);
}
}
}
}
身份模型
using System.Data.Entity;
using System.Security.Claims;
using System.Threading.Tasks;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.EntityFramework;
namespace IdentityMySQLDemo.Models
{
// You can add profile data for the user by adding more properties to your ApplicationUser class, please visit http://go.microsoft.com/fwlink/?LinkID=317594 to learn more.
public class ApplicationUser : IdentityUser
{
public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<ApplicationUser> manager)
{
// Note the authenticationType must match the one defined in CookieAuthenticationOptions.AuthenticationType
var userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
// Add custom user claims here
return userIdentity;
}
}
public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
static ApplicationDbContext()
{
Database.SetInitializer(new MySqlInitializer());
}
public ApplicationDbContext()
: base("DefaultConnection", throwIfV1Schema: false)
{
}
public static ApplicationDbContext Create()
{
return new ApplicationDbContext();
}
}
}
我不知道为什么它不想在应用程序启动时创建Admin用户,我试图将这段代码移到Migrations文件夹中的“ Configuration”或“ MySQLConfiguration”中,我还试图首先创建所有表,然后添加管理员用户使用此功能,但仍然无法使用,请告诉我这段代码的愚蠢错误在哪里？
解决方法:
看起来好像缺少上下文了.SaveChanges()或三个.
您的种子方法有问题吗？如果问题在于您在NuGet软件包管理器控制台中运行update-database命令时,如果没有对context.SaveChanges()的调用,那么它将不会更新数据库.
您还需要调用3次.
>创建角色后
>创建用户后
>将用户分配给角色后
我自己对C#/ ASP.NET MVC还是一个相对较新的人,所以如果这是正确的解决方法(因为目前无法测试我的想法),则不是100％,但这似乎是我过去遇到的类似问题.
更新
我玩了一圈,这成功地将3个表更新为种子方法的一部分.
我认为另一个问题是,您没有在几个地方调用方法,而是只是将它们分配给变量,然后不使用.例如在以下代码段中：
var rolesForUser = userManager.GetRoles(user.Id);
if (!rolesForUser.Contains(role.Name))
{
var result = userManager.AddToRole(user.Id, role.Name);
}
我将其更改为：
var rolesForUser = userManager.GetRoles(user.Id);
if (!rolesForUser.Contains(role.Name))
{
userManager.AddToRole(user.Id, role.Name);
}
因此删除var结果=
这是完整的代码：
protected override void Seed( MySqlInitializer context)
{
var userManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext("DefaultConnection")));
var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(new ApplicationDbContext("DefaultConnection")));
const string name = "admin@example.com";
const string password = "Password";
const string roleName = "Admin";
//Create Role Admin if it does not exist
var role = roleManager.FindByName(roleName);
if (role == null)
{
role = new IdentityRole(roleName);
roleManager.Create(role);
}
context.SaveChanges();
var user = userManager.FindByName(name);
if (user == null)
{
user = new ApplicationUser { UserName = name, Email = name };
userManager.Create(user, password);
userManager.SetLockoutEnabled(user.Id, false);
}
context.SaveChanges();
// Add user admin to Role Admin if not already added
var rolesForUser = userManager.GetRoles(user.Id);
if (!rolesForUser.Contains(role.Name))
{
userManager.AddToRole(user.Id, role.Name);
}
context.SaveChanges();
}
在某些方面,我要感谢您,因为通过帮助您,我帮助了自己:)
标签：asp-net-identity,asp-net,c,asp-net-mvc,mysql 来源： https://codeday.me/bug/20191119/2039352.html