AngularJS-在每个路由和控制器中的登录和身份验证?

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有一个AngularJS应用程序创建

app.js

'use strict';
//Define Routing for app
angular.module('myApp', []).config(['$routeProvider', '$locationProvider',
  function($routeProvider,$locationProvider) {
    $routeProvider
    .when('/login', {
        templateUrl: 'login.html',
        controller: 'LoginController'
    })
    .when('/register', {
        templateUrl: 'register.html',
        controller: 'RegisterController'
      })
    .when('/forgotPassword', {
        templateUrl: 'forgotpassword.html',
        controller: 'forgotController'
      })
   .when('/home', {
       templateUrl: 'views/home.html',
       controller: 'homeController'
    })
    .otherwise({
       redirectTo: '/login'
    });
//    $locationProvider.html5Mode(true); //Remove the '#' from URL.
}]);

angular.module('myApp').factory("page", function($rootScope){
    var page={};
    var user={};
    page.setPage=function(title,bodyClass){
        $rootScope.pageTitle = title;
        $rootScope.bodylayout=bodyClass;
    };
    page.setUser=function(user){
        $rootScope.user=user;
    }
    return page;
});

LoginControler.js

'use strict';

angular.module('myApp').controller('LoginController', function($scope, $location, $window,page) {
    page.setPage("Login","login-layout");
    $scope.user = {};
    $scope.loginUser=function()
    {
        var username=$scope.user.name;
        var password=$scope.user.password;
        if(username=="admin" && password=="admin123")
        {
            page.setUser($scope.user);
            $location.path( "/home" );
        }
        else
        {
            $scope.message="Error";
            $scope.messagecolor="alert alert-danger";
        }
    }
});

在我的主页上

<span class="user-info">
    <small>Welcome,</small>
    {{user.name}}
</span>
<span class="logout"><a href="" ng-click="logoutUser()">Logout</a></span>
提问于
用户回答回答于

在主控制器中查看用户的状态是否发生变化。

app.run(['$rootScope', '$location', 'Auth', function ($rootScope, $location, Auth) {
    $rootScope.$on('$routeChangeStart', function (event) {

        if (!Auth.isLoggedIn()) {
            console.log('DENY');
            event.preventDefault();
            $location.path('/login');
        }
        else {
            console.log('ALLOW');
            $location.path('/home');
        }
    });
}]);
 .factory('Auth', function(){
var user;

return{
    setUser : function(aUser){
        user = aUser;
    },
    isLoggedIn : function(){
        return(user)? user : false;
    }
  }
})

LOGIN控制器:

.controller('loginCtrl', [ '$scope', 'Auth', function ($scope, Auth) {
  //submit
  $scope.login = function () {
    // Ask to the server, do your job and THEN set the user

    Auth.setUser(user); //Update the state of the user in the app
  };
}])

从主控制器中,可以侦听用户状态是否发生变化

.controller('mainCtrl', ['$scope', 'Auth', '$location', function ($scope, Auth, $location) {

  $scope.$watch(Auth.isLoggedIn, function (value, oldValue) {

    if(!value && oldValue) {
      console.log("Disconnect");
      $location.path('/login');
    }

    if(value) {
      console.log("Connect");
      //Do something when the user is connected
    }

  }, true);
用户回答回答于

下面是另一个可能的解决方案,使用resolve属性的$stateProvider或者$routeProvider

.config(["$stateProvider", function ($stateProvider) {

  $stateProvider

  .state("forbidden", {
    /* ... */
  })

  .state("signIn", {
    /* ... */
    resolve: {
      access: ["Access", function (Access) { return Access.isAnonymous(); }],
    }
  })

  .state("home", {
    /* ... */
    resolve: {
      access: ["Access", function (Access) { return Access.isAuthenticated(); }],
    }
  })

  .state("admin", {
    /* ... */
    resolve: {
      access: ["Access", function (Access) { return Access.hasRole("ROLE_ADMIN"); }],
    }
  });

}])

Access根据当前的用户权限决定或拒绝承诺:

.factory("Access", ["$q", "UserProfile", function ($q, UserProfile) {

  var Access = {

    OK: 200,

    // "we don't know who you are, so we can't say if you're authorized to access
    // this resource or not yet, please sign in first"
    UNAUTHORIZED: 401,

    // "we know who you are, and your profile does not allow you to access this resource"
    FORBIDDEN: 403,

    hasRole: function (role) {
      return UserProfile.then(function (userProfile) {
        if (userProfile.$hasRole(role)) {
          return Access.OK;
        } else if (userProfile.$isAnonymous()) {
          return $q.reject(Access.UNAUTHORIZED);
        } else {
          return $q.reject(Access.FORBIDDEN);
        }
      });
    },

    hasAnyRole: function (roles) {
      return UserProfile.then(function (userProfile) {
        if (userProfile.$hasAnyRole(roles)) {
          return Access.OK;
        } else if (userProfile.$isAnonymous()) {
          return $q.reject(Access.UNAUTHORIZED);
        } else {
          return $q.reject(Access.FORBIDDEN);
        }
      });
    },

    isAnonymous: function () {
      return UserProfile.then(function (userProfile) {
        if (userProfile.$isAnonymous()) {
          return Access.OK;
        } else {
          return $q.reject(Access.FORBIDDEN);
        }
      });
    },

    isAuthenticated: function () {
      return UserProfile.then(function (userProfile) {
        if (userProfile.$isAuthenticated()) {
          return Access.OK;
        } else {
          return $q.reject(Access.UNAUTHORIZED);
        }
      });
    }

  };

  return Access;

}])

UserProfile复制当前用户属性,并实现$hasRole,,,$hasAnyRole,,,$isAnonymous$isAuthenticated方法逻辑(加上$refresh方法,稍后解释):

.factory("UserProfile", ["Auth", function (Auth) {

  var userProfile = {};

  var clearUserProfile = function () {
    for (var prop in userProfile) {
      if (userProfile.hasOwnProperty(prop)) {
        delete userProfile[prop];
      }
    }
  };

  var fetchUserProfile = function () {
    return Auth.getProfile().then(function (response) {
      clearUserProfile();
      return angular.extend(userProfile, response.data, {

        $refresh: fetchUserProfile,

        $hasRole: function (role) {
          return userProfile.roles.indexOf(role) >= 0;
        },

        $hasAnyRole: function (roles) {
          return !!userProfile.roles.filter(function (role) {
            return roles.indexOf(role) >= 0;
          }).length;
        },

        $isAnonymous: function () {
          return userProfile.anonymous;
        },

        $isAuthenticated: function () {
          return !userProfile.anonymous;
        }

      });
    });
  };

  return fetchUserProfile();

}])

Auth负责请求服务器,以了解用户配置文件(例如,链接到附加到请求的访问令牌):

.service("Auth", ["$http", function ($http) {

  this.getProfile = function () {
    return $http.get("api/auth");
  };

}])

当请求时,服务器将返回这样一个JSON对象GET api/auth:

{
  "name": "John Doe", // plus any other user information
  "roles": ["ROLE_ADMIN", "ROLE_USER"], // or any other role (or no role at all, i.e. an empty array)
  "anonymous": false // or true
}

最后,当Access拒绝承诺,如果使用ui.router$stateChangeError事件将被触发:

.run(["$rootScope", "Access", "$state", "$log", function ($rootScope, Access, $state, $log) {

  $rootScope.$on("$stateChangeError", function (event, toState, toParams, fromState, fromParams, error) {
    switch (error) {

    case Access.UNAUTHORIZED:
      $state.go("signIn");
      break;

    case Access.FORBIDDEN:
      $state.go("forbidden");
      break;

    default:
      $log.warn("$stateChangeError event catched");
      break;

    }
  });

}])

如果使用ngRoute$routeChangeError事件将被触发:

.run(["$rootScope", "Access", "$location", "$log", function ($rootScope, Access, $location, $log) {

  $rootScope.$on("$routeChangeError", function (event, current, previous, rejection) {
    switch (rejection) {

    case Access.UNAUTHORIZED:
      $location.path("/signin");
      break;

    case Access.FORBIDDEN:
      $location.path("/forbidden");
      break;

    default:
      $log.warn("$stateChangeError event catched");
      break;

    }
  });

}])

还可以在控制器中访问用户配置文件:

.state("home", {
  /* ... */
  controller: "HomeController",
  resolve: {
    userProfile: "UserProfile"
  }
})

UserProfile然后包含服务器在请求时返回的属性。GET api/auth:

.controller("HomeController", ["$scope", "userProfile", function ($scope, userProfile) {

  $scope.title = "Hello " + userProfile.name; // "Hello John Doe" in the example

}])

UserProfile需要在用户登录或退出时刷新,以便Access可以使用新的用户配置文件处理路由。您可以重新加载整个页面,或者调用UserProfile.$refresh()...。在登录时的示例:

.service("Auth", ["$http", function ($http) {

  /* ... */

  this.signIn = function (credentials) {
    return $http.post("api/auth", credentials).then(function (response) {
      // authentication succeeded, store the response access token somewhere (if any)
    });
  };

}])
.state("signIn", {
  /* ... */
  controller: "SignInController",
  resolve: {
    /* ... */
    userProfile: "UserProfile"
  }
})
.controller("SignInController", ["$scope", "$state", "Auth", "userProfile", function ($scope, $state, Auth, userProfile) {

  $scope.signIn = function () {
    Auth.signIn($scope.credentials).then(function () {
      // user successfully authenticated, refresh UserProfile
      return userProfile.$refresh();
    }).then(function () {
      // UserProfile is refreshed, redirect user somewhere
      $state.go("home");
    });
  };

}])

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