这是我在StackOverflow中的第一个问题:)所以请不要判断我强大:)好的。我们走了。
我是ASP.NET MVC Framework的新手，并尝试在我的网站中实现多语言。所以我将下拉语言列表添加到_LoginPartial.cshtml：
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">@(MEDONET.Resources.IndexTexts.Language)<b class="caret"></b></a>
<ul class="dropdown-menu">
<li>@Html.ActionLink("Кыргызча", "Change", "Language", new { lang = "ky" }, null)</li>
<li>@Html.ActionLink("Русский", "Change", "Language", new { lang = "ru" }, null)</li>
<li>@Html.ActionLink("English", "Change", "Language", new { lang = "en" }, null)</li>
<li>@Html.ActionLink("O'zbekcha", "Change", "Language", new { lang = "uz" }, null)</li>
</ul>
</li>
如您所见，我将选定的语言缩写传递给语言控制器的Change方法。在LanguageController中，我的代码如下所示：
public ActionResult Change(string lang)
{
if (lang != null)
{
if (User.Identity.IsAuthenticated)
{
//var user = _userManager.FindByName(User.Identity.Name);
//_userManager.AddClaim(user.Id, new Claim("Language", lang));
//var claims = _userManager.GetClaims(user.Id);
////User.RemoveClaimIfExists("Language");
////var claims = new List<Claim>();
ApplicationDbContext mycontext = new ApplicationDbContext();
UserStore<ApplicationUser> mystore = new UserStore<ApplicationUser>(mycontext);
ApplicationUserManager UserMan = new ApplicationUserManager(mystore);
//ApplicationUser _user = UserMan.FindById(User.Identity.GetUserId());
UserMan.AddClaim(User.Identity.GetUserId(), new Claim("Language", lang));
//UserMan.RemoveClaim(User.Identity.GetUserId(), User.GetClaim("Language"));
//User.AddClaim(lang);
}
Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(lang);
Thread.CurrentThread.CurrentUICulture = new CultureInfo(lang);
HttpCookie cookie = new HttpCookie("Language");
cookie.Value = lang;
Response.Cookies.Add(cookie);
return Redirect(Request.UrlReferrer.ToString());
}
return Redirect(Request.UrlReferrer.ToString());
}
正如您所注意到的，我尝试了很多不同的方法来实现该功能。经过一天的煎熬，它开始发挥作用。但我不确定我的Frankenshtain是向AspNetUserClaims表写一个Claim的最佳方法。所以这是我的第一个问题：
1）如何改进我的写作索赔代码？
第二个问题与第一个问题非常接近：
2）如何更新现有用户声明？
最后，对于我的知识水平问题显而易见的最后三分之一是：
3）如何阅读存储的声明？
一旦设置声明需要在下一个会话中阅读。因此我创建了Claims类，并在此处添加了
public static string GetClaimValue(this IPrincipal currentPrincipal, string key)
{
var identity = currentPrincipal.Identity as ClaimsIdentity;
if (identity == null)
return null;
var claim = identity.Claims.FirstOrDefault(c => c.Type == key);
return claim?.Value;
}
代码并从AccountController的Login方法调用它：
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
{
if (!ModelState.IsValid)
{
return View(model);
}
// This doesn't count login failures towards account lockout
// To enable password failures to trigger account lockout, change to shouldLockout: true
var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout: false);
switch (result)
{
case SignInStatus.Success:
HttpCookie cookie = new HttpCookie("Language");
string lang = GetClaimValue("Language");
if (lang == null) // language was not selected befor
lang = "ru";
Response.Cookies.Add(cookie);
Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(cookie.Value);
Thread.CurrentThread.CurrentUICulture = new CultureInfo(cookie.Value);
return RedirectToLocal(returnUrl);
case SignInStatus.LockedOut:
return View("Lockout");
case SignInStatus.RequiresVerification:
return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe });
case SignInStatus.Failure:
default:
ModelState.AddModelError("", "Invalid login attempt.");
return View(model);
}
}
你可以猜到我总是得到俄语，而不是吉尔吉斯语，而不是吉尔吉斯语＆＃34; ky＆＃34;存储在AspNetUserClaims表中。
那就是它:)我希望这里没有太多的桌面谈话。请帮帮我！
答案 0 :(得分：0)
我将跳过你的第一个问题，因为我很难回答你没有查看使用你的声明代码的所有背景。但是，对于你的其他问题：
2）如何更新现有用户声明？
你可以使用这样的方法：
public static void AddUpdateClaim(this IPrincipal currentPrincipal, string key, string value)
{
var identity = currentPrincipal.Identity as ClaimsIdentity;
if (identity == null)
return;
// check for existing claim and remove it
var existingClaim = identity.FindFirst(key);
if (existingClaim != null)
identity.RemoveClaim(existingClaim);
// add new claim
identity.AddClaim(new Claim(key, value));
var authenticationManager = HttpContext.Current.GetOwinContext().Authentication;
authenticationManager.AuthenticationResponseGrant = new AuthenticationResponseGrant(new ClaimsPrincipal(identity), new AuthenticationProperties() { IsPersistent = true });
}
现在你可以从任何这样的控制器中使用它：
User.AddUpdateClaim("Language", "ru");
3）如何阅读存储的声明？
这样的事情：
public static string GetClaimValue(this IPrincipal principal, string type)
{
var user = principal as ClaimsPrincipal;
var claim = user.Claims.FirstOrDefault(x => x.Type == type);
if (claim != null) return claim.Value;
throw new Exception($"Claim with type {type} not set");
}
这两种方法都是扩展方法，可以在Controller.User对象上使用。
编辑：作为对您的评论的回复，您可以通过以下方式创建声明标识：
var ident = new ClaimsIdentity(
new[] {
new Claim("http://schemas.microsoft.com/accesscontrolservice/2010/07/claims/identityprovider", "ASP.NET Identity", "http://www.w3.org/2001/XMLSchema#string"),
},
DefaultAuthenticationTypes.ApplicationCookie);
//Add default language to claims
ident.AddClaim(new Claim("Language", "ru"));
HttpContext.GetOwinContext().Authentication.SignIn(ident);
答案 1 :(得分：0)
用于更新声明
// GET: Language
public ActionResult Change(string lang)
{
if(lang != null)
{
if(User.Identity.IsAuthenticated)
{
var claims = new List<Claim>();
ApplicationDbContext mycontext = new ApplicationDbContext();
UserStore<ApplicationUser> mystore = new UserStore<ApplicationUser>(mycontext);
ApplicationUserManager UserMan = new ApplicationUserManager(mystore);
ApplicationUser _user = UserMan.FindById(User.Identity.GetUserId());
var claim = _user.Claims.FirstOrDefault(c => c.ClaimType == "Language");
if (claim != null) // User have Language claim the table
{
if (claim.ClaimValue != lang) // and chosen language doesn't match it
{
UserMan.RemoveClaim(User.Identity.GetUserId(), new Claim("Language", claim.ClaimValue));
UserMan.AddClaimAsync(User.Identity.GetUserId(), new Claim("Language", lang));
}
}
else if(claim == null)
{
UserMan.AddClaimAsync(User.Identity.GetUserId(), new Claim("Language", lang));
}
}
Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(lang);
Thread.CurrentThread.CurrentUICulture = new CultureInfo(lang);
HttpCookie cookie = new HttpCookie("Language");
cookie.Value = lang;
Response.Cookies.Add(cookie);
return Redirect(Request.UrlReferrer.ToString());
}
return Redirect(Request.UrlReferrer.ToString());
}
在此更改操作中，我实际上正在阅读声明，但如果想在登录时阅读，我会这样做：
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
{
if (!ModelState.IsValid)
{
return View(model);
}
// This doesn't count login failures towards account lockout
// To enable password failures to trigger account lockout, change to shouldLockout: true
var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout: false);
switch (result)
{
case SignInStatus.Success:
HttpCookie cookie = new HttpCookie("Language");
cookie.Value = "ru";
var user = UserManager.FindByEmail(model.Email);
var claim = user.Claims.FirstOrDefault(c => c.ClaimType == "Language");
if (claim == null)
{
cookie.Value = Thread.CurrentThread.CurrentCulture.Name.ToString(); // interface language used befor logining in
}
else
cookie.Value = claim.ClaimValue; // Language from the UserClaim
Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(cookie.Value);
Thread.CurrentThread.CurrentUICulture = new CultureInfo(cookie.Value);
Response.Cookies.Add(cookie);
return RedirectToLocal(returnUrl);
case SignInStatus.LockedOut:
return View("Lockout");
case SignInStatus.RequiresVerification:
return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe });
case SignInStatus.Failure:
default:
ModelState.AddModelError("", "Invalid login attempt.");
return View(model);
}
}