MVC 5 中Filter控制 action的访问权限
1,创建一个继承自 FilterAttribute, IActionFilter的类
namespace HeatMetering2.Filters
{
public class HMV2AuthenticationAttribute : FilterAttribute, IActionFilter
{
int notAuthentication = 0; //设置未认证标志,用于区分返回不同的未认证页面
public void OnActionExecuted(ActionExecutedContext filterContext)
{
}
public void OnActionExecuting(ActionExecutingContext filterContext)
{
//if (true)
//{
// // 已登录,并且查询数据库后具有操作权限或者设置了Anonymouse,以及当前用户是admin
//}
//else
//{
// context.Result = new HttpUnauthorizedResult(); // mark unauthorized
//}
notAuthentication = 0;
if (notAuthentication == 0
&& filterContext.ActionDescriptor.ControllerDescriptor.ControllerName == "basLoginUsers"
&& filterContext.ActionDescriptor.ActionName == "EditBasLoginUser")
{
filterContext.Result = new RedirectToRouteResult("Default",
new System.Web.Routing.RouteValueDictionary{
{"controller", "Account"},
{"action", "NotAuthentication"},
{"returnUrl", filterContext.HttpContext.Request.RawUrl}
});
}
}
}
}
2,在controller中这样引用该类
[HMV2Authentication]
public class basLoginUsersController : Controller
{
private HeatMeteringV2DBContext db = new HeatMeteringV2DBContext("HeatMeteringV2DBContext");
// GET: basLoginUsers
public ActionResult Index()
{
return View();
}
public ActionResult EditBasLoginUser(basLoginUser _basLoginUser)
{
if (ModelState.IsValid)
{
try
{
db.Entry(_basLoginUser).State = EntityState.Modified;
string _password = _basLoginUser.Password;
//随机 "盐",生成自GUID
string salt = Guid.NewGuid().ToString();
string strPasswordHash = CommFunc.GetPasswordEncryptByHashWithSalt(_password, salt);
_basLoginUser.PasswordHash = strPasswordHash;
_basLoginUser.PasswordSalt = salt;
db.SaveChanges();
var json = new
{
okMsg = "修改成功"
};
return Json(json, "text/html", JsonRequestBehavior.AllowGet);
}
catch(Exception ex)
{
var json = new
{
errorMsg = "保存数据出错:"+ex.Message.ToString()
};
return Json(json, "text/html", JsonRequestBehavior.AllowGet);
}
}
else
{
var json = new
{
errorMsg = "验证错误"
};
return Json(json, "text/html", JsonRequestBehavior.AllowGet);
}
}
}
3,在Account controller中定义如下Action,这样引用basLoginUsersController 的EditBasLoginUser 这个Action都会被提示当前用户没有此项操作权限,
这里仅仅举了个例子,再实际应用中我们可以在我们定义的类的OnActionExecuting方法里面获取我们已经设定好的对controller->action的权限设定,来决定是否禁用该Action,以达到设定权限的目的。但是这样做的不好之处是,用户仍然可以执行操作,只是我们在用户操作以后才可以告诉用户啥啥不能用种种,有点不好。
目前想到的方法是在页面上用Ajax请求权限数据,利用Javascript(Jquery)来利用元素ID选择器选择操作元素,并且使元素不可操作/编辑
[AllowAnonymous]
public ActionResult NotAuthentication()
{
var json = new
{
errorMsg = "当前用户没有此项操作权限"
};
return Json(json, "text/html", JsonRequestBehavior.AllowGet);
}

浙公网安备 33010602011771号