使用javascript和AngularJS检测重写规则背后是否存在资源

我正在尝试只使用javascript和AngularJS覆盖我的单页应用程序的某些部分

覆盖基于子域

每个子域都指向同一个文档根

controllers.js

controller('AppController', ['$scope','$route','$routeParams','$location', function($scope, $route, $routeParams, $location) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    render();
  });
  var render = function(){
    //Is it actually a subdomain?
    if($location.host().split(".",1).length>2){ 
      //Use subdomain folder if it is.
      var url = "views/"+$location.host().split(".",1)+"/"+$route.current.template;
      var http = new XMLHttpRequest();    
      http.onreadystatechange=function(){
        if (http.readyState==4){
          //If there isn't an overwrite, use the original.
          $scope.page = (http.status!=404)?url:("views/"+$route.current.template);
        }
      }
      http.open('HEAD', url, true);
      http.send();
    }
    else{
      //Else we are on the parent domain.
      $scope.page  = "views/"+$route.current.template;
    }
  };
}])

config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
  $locationProvider.html5Mode(true);
  $routeProvider.when('/', {
    template: 'home.html'
  });
  $routeProvider.when('/services', {
    template: 'services.html'
  });
  $routeProvider.otherwise({redirectTo: '/'});
}]);

factory('Views', function($location,$route,$routeParams,objExistsFilter) {

  var viewsService = {};
  var views = {
    subdomain1:{
      'home.html':'/views/subdomain1/home.html'
      },
    subdomain2:{

    },
    'home.html':'/views/home.html',
  };

  viewsService.returnView = function() {
    var y = $route.current.template;
    var x = $location.host().split(".");
    return (x.length>2)?(objExistsFilter(views[x[0]][y]))?views[x[0]][y]:views[y]:views[y];
  };

  viewsService.returnViews = function() {
    return views;
  };

  return viewsService;
}).

controller('AppController', ['$scope','Views', function($scope, Views) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    $scope.page = Views.returnView();
  });
}]).

filter('objExists', function () {
  return function (property) {
    try {
      return property;
    } catch (err) {
      return null
    }
  };
});

config.js

controller('AppController', ['$scope','$route','$routeParams','$location', function($scope, $route, $routeParams, $location) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    render();
  });
  var render = function(){
    //Is it actually a subdomain?
    if($location.host().split(".",1).length>2){ 
      //Use subdomain folder if it is.
      var url = "views/"+$location.host().split(".",1)+"/"+$route.current.template;
      var http = new XMLHttpRequest();    
      http.onreadystatechange=function(){
        if (http.readyState==4){
          //If there isn't an overwrite, use the original.
          $scope.page = (http.status!=404)?url:("views/"+$route.current.template);
        }
      }
      http.open('HEAD', url, true);
      http.send();
    }
    else{
      //Else we are on the parent domain.
      $scope.page  = "views/"+$route.current.template;
    }
  };
}])

config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
  $locationProvider.html5Mode(true);
  $routeProvider.when('/', {
    template: 'home.html'
  });
  $routeProvider.when('/services', {
    template: 'services.html'
  });
  $routeProvider.otherwise({redirectTo: '/'});
}]);

factory('Views', function($location,$route,$routeParams,objExistsFilter) {

  var viewsService = {};
  var views = {
    subdomain1:{
      'home.html':'/views/subdomain1/home.html'
      },
    subdomain2:{

    },
    'home.html':'/views/home.html',
  };

  viewsService.returnView = function() {
    var y = $route.current.template;
    var x = $location.host().split(".");
    return (x.length>2)?(objExistsFilter(views[x[0]][y]))?views[x[0]][y]:views[y]:views[y];
  };

  viewsService.returnViews = function() {
    return views;
  };

  return viewsService;
}).

controller('AppController', ['$scope','Views', function($scope, Views) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    $scope.page = Views.returnView();
  });
}]).

filter('objExists', function () {
  return function (property) {
    try {
      return property;
    } catch (err) {
      return null
    }
  };
});

index.html

<html lang="en" ng-app="myApp" ng-controller="AppController">
<body>
<div ng-include src="page" class="container"></div>
</body>
</html>

当我不在子域上时，这非常有效，但我也没有发送

XMLHttpRequest

。当我使用子域时，现在我们需要检查覆盖

这里棘手的部分是重写规则迫使XMLHttpRequest返回一个200。

---

关于如何既吃蛋糕又吃蛋糕的想法？

出于两个原因，我决定选择当地的斯特拉德吉餐厅：

XML请求没有额外的开销

404当资源不存在时，消息不会发送控制台日志

services.js

controller('AppController', ['$scope','$route','$routeParams','$location', function($scope, $route, $routeParams, $location) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    render();
  });
  var render = function(){
    //Is it actually a subdomain?
    if($location.host().split(".",1).length>2){ 
      //Use subdomain folder if it is.
      var url = "views/"+$location.host().split(".",1)+"/"+$route.current.template;
      var http = new XMLHttpRequest();    
      http.onreadystatechange=function(){
        if (http.readyState==4){
          //If there isn't an overwrite, use the original.
          $scope.page = (http.status!=404)?url:("views/"+$route.current.template);
        }
      }
      http.open('HEAD', url, true);
      http.send();
    }
    else{
      //Else we are on the parent domain.
      $scope.page  = "views/"+$route.current.template;
    }
  };
}])

config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
  $locationProvider.html5Mode(true);
  $routeProvider.when('/', {
    template: 'home.html'
  });
  $routeProvider.when('/services', {
    template: 'services.html'
  });
  $routeProvider.otherwise({redirectTo: '/'});
}]);

factory('Views', function($location,$route,$routeParams,objExistsFilter) {

  var viewsService = {};
  var views = {
    subdomain1:{
      'home.html':'/views/subdomain1/home.html'
      },
    subdomain2:{

    },
    'home.html':'/views/home.html',
  };

  viewsService.returnView = function() {
    var y = $route.current.template;
    var x = $location.host().split(".");
    return (x.length>2)?(objExistsFilter(views[x[0]][y]))?views[x[0]][y]:views[y]:views[y];
  };

  viewsService.returnViews = function() {
    return views;
  };

  return viewsService;
}).

controller('AppController', ['$scope','Views', function($scope, Views) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    $scope.page = Views.returnView();
  });
}]).

filter('objExists', function () {
  return function (property) {
    try {
      return property;
    } catch (err) {
      return null
    }
  };
});

controllers.js

controller('AppController', ['$scope','$route','$routeParams','$location', function($scope, $route, $routeParams, $location) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    render();
  });
  var render = function(){
    //Is it actually a subdomain?
    if($location.host().split(".",1).length>2){ 
      //Use subdomain folder if it is.
      var url = "views/"+$location.host().split(".",1)+"/"+$route.current.template;
      var http = new XMLHttpRequest();    
      http.onreadystatechange=function(){
        if (http.readyState==4){
          //If there isn't an overwrite, use the original.
          $scope.page = (http.status!=404)?url:("views/"+$route.current.template);
        }
      }
      http.open('HEAD', url, true);
      http.send();
    }
    else{
      //Else we are on the parent domain.
      $scope.page  = "views/"+$route.current.template;
    }
  };
}])

config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
  $locationProvider.html5Mode(true);
  $routeProvider.when('/', {
    template: 'home.html'
  });
  $routeProvider.when('/services', {
    template: 'services.html'
  });
  $routeProvider.otherwise({redirectTo: '/'});
}]);

factory('Views', function($location,$route,$routeParams,objExistsFilter) {

  var viewsService = {};
  var views = {
    subdomain1:{
      'home.html':'/views/subdomain1/home.html'
      },
    subdomain2:{

    },
    'home.html':'/views/home.html',
  };

  viewsService.returnView = function() {
    var y = $route.current.template;
    var x = $location.host().split(".");
    return (x.length>2)?(objExistsFilter(views[x[0]][y]))?views[x[0]][y]:views[y]:views[y];
  };

  viewsService.returnViews = function() {
    return views;
  };

  return viewsService;
}).

controller('AppController', ['$scope','Views', function($scope, Views) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    $scope.page = Views.returnView();
  });
}]).

filter('objExists', function () {
  return function (property) {
    try {
      return property;
    } catch (err) {
      return null
    }
  };
});

filters.js

controller('AppController', ['$scope','$route','$routeParams','$location', function($scope, $route, $routeParams, $location) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    render();
  });
  var render = function(){
    //Is it actually a subdomain?
    if($location.host().split(".",1).length>2){ 
      //Use subdomain folder if it is.
      var url = "views/"+$location.host().split(".",1)+"/"+$route.current.template;
      var http = new XMLHttpRequest();    
      http.onreadystatechange=function(){
        if (http.readyState==4){
          //If there isn't an overwrite, use the original.
          $scope.page = (http.status!=404)?url:("views/"+$route.current.template);
        }
      }
      http.open('HEAD', url, true);
      http.send();
    }
    else{
      //Else we are on the parent domain.
      $scope.page  = "views/"+$route.current.template;
    }
  };
}])

config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
  $locationProvider.html5Mode(true);
  $routeProvider.when('/', {
    template: 'home.html'
  });
  $routeProvider.when('/services', {
    template: 'services.html'
  });
  $routeProvider.otherwise({redirectTo: '/'});
}]);

factory('Views', function($location,$route,$routeParams,objExistsFilter) {

  var viewsService = {};
  var views = {
    subdomain1:{
      'home.html':'/views/subdomain1/home.html'
      },
    subdomain2:{

    },
    'home.html':'/views/home.html',
  };

  viewsService.returnView = function() {
    var y = $route.current.template;
    var x = $location.host().split(".");
    return (x.length>2)?(objExistsFilter(views[x[0]][y]))?views[x[0]][y]:views[y]:views[y];
  };

  viewsService.returnViews = function() {
    return views;
  };

  return viewsService;
}).

controller('AppController', ['$scope','Views', function($scope, Views) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    $scope.page = Views.returnView();
  });
}]).

filter('objExists', function () {
  return function (property) {
    try {
      return property;
    } catch (err) {
      return null
    }
  };
});

---

我决定和当地的斯特拉德吉一起去，原因有两个：

XML请求没有额外的开销

404当资源不存在时，消息不会发送控制台日志

services.js

controller('AppController', ['$scope','$route','$routeParams','$location', function($scope, $route, $routeParams, $location) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    render();
  });
  var render = function(){
    //Is it actually a subdomain?
    if($location.host().split(".",1).length>2){ 
      //Use subdomain folder if it is.
      var url = "views/"+$location.host().split(".",1)+"/"+$route.current.template;
      var http = new XMLHttpRequest();    
      http.onreadystatechange=function(){
        if (http.readyState==4){
          //If there isn't an overwrite, use the original.
          $scope.page = (http.status!=404)?url:("views/"+$route.current.template);
        }
      }
      http.open('HEAD', url, true);
      http.send();
    }
    else{
      //Else we are on the parent domain.
      $scope.page  = "views/"+$route.current.template;
    }
  };
}])

config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
  $locationProvider.html5Mode(true);
  $routeProvider.when('/', {
    template: 'home.html'
  });
  $routeProvider.when('/services', {
    template: 'services.html'
  });
  $routeProvider.otherwise({redirectTo: '/'});
}]);

factory('Views', function($location,$route,$routeParams,objExistsFilter) {

  var viewsService = {};
  var views = {
    subdomain1:{
      'home.html':'/views/subdomain1/home.html'
      },
    subdomain2:{

    },
    'home.html':'/views/home.html',
  };

  viewsService.returnView = function() {
    var y = $route.current.template;
    var x = $location.host().split(".");
    return (x.length>2)?(objExistsFilter(views[x[0]][y]))?views[x[0]][y]:views[y]:views[y];
  };

  viewsService.returnViews = function() {
    return views;
  };

  return viewsService;
}).

controller('AppController', ['$scope','Views', function($scope, Views) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    $scope.page = Views.returnView();
  });
}]).

filter('objExists', function () {
  return function (property) {
    try {
      return property;
    } catch (err) {
      return null
    }
  };
});

controllers.js

controller('AppController', ['$scope','$route','$routeParams','$location', function($scope, $route, $routeParams, $location) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    render();
  });
  var render = function(){
    //Is it actually a subdomain?
    if($location.host().split(".",1).length>2){ 
      //Use subdomain folder if it is.
      var url = "views/"+$location.host().split(".",1)+"/"+$route.current.template;
      var http = new XMLHttpRequest();    
      http.onreadystatechange=function(){
        if (http.readyState==4){
          //If there isn't an overwrite, use the original.
          $scope.page = (http.status!=404)?url:("views/"+$route.current.template);
        }
      }
      http.open('HEAD', url, true);
      http.send();
    }
    else{
      //Else we are on the parent domain.
      $scope.page  = "views/"+$route.current.template;
    }
  };
}])

config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
  $locationProvider.html5Mode(true);
  $routeProvider.when('/', {
    template: 'home.html'
  });
  $routeProvider.when('/services', {
    template: 'services.html'
  });
  $routeProvider.otherwise({redirectTo: '/'});
}]);

factory('Views', function($location,$route,$routeParams,objExistsFilter) {

  var viewsService = {};
  var views = {
    subdomain1:{
      'home.html':'/views/subdomain1/home.html'
      },
    subdomain2:{

    },
    'home.html':'/views/home.html',
  };

  viewsService.returnView = function() {
    var y = $route.current.template;
    var x = $location.host().split(".");
    return (x.length>2)?(objExistsFilter(views[x[0]][y]))?views[x[0]][y]:views[y]:views[y];
  };

  viewsService.returnViews = function() {
    return views;
  };

  return viewsService;
}).

controller('AppController', ['$scope','Views', function($scope, Views) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    $scope.page = Views.returnView();
  });
}]).

filter('objExists', function () {
  return function (property) {
    try {
      return property;
    } catch (err) {
      return null
    }
  };
});

filters.js

controller('AppController', ['$scope','$route','$routeParams','$location', function($scope, $route, $routeParams, $location) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    render();
  });
  var render = function(){
    //Is it actually a subdomain?
    if($location.host().split(".",1).length>2){ 
      //Use subdomain folder if it is.
      var url = "views/"+$location.host().split(".",1)+"/"+$route.current.template;
      var http = new XMLHttpRequest();    
      http.onreadystatechange=function(){
        if (http.readyState==4){
          //If there isn't an overwrite, use the original.
          $scope.page = (http.status!=404)?url:("views/"+$route.current.template);
        }
      }
      http.open('HEAD', url, true);
      http.send();
    }
    else{
      //Else we are on the parent domain.
      $scope.page  = "views/"+$route.current.template;
    }
  };
}])

config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
  $locationProvider.html5Mode(true);
  $routeProvider.when('/', {
    template: 'home.html'
  });
  $routeProvider.when('/services', {
    template: 'services.html'
  });
  $routeProvider.otherwise({redirectTo: '/'});
}]);

factory('Views', function($location,$route,$routeParams,objExistsFilter) {

  var viewsService = {};
  var views = {
    subdomain1:{
      'home.html':'/views/subdomain1/home.html'
      },
    subdomain2:{

    },
    'home.html':'/views/home.html',
  };

  viewsService.returnView = function() {
    var y = $route.current.template;
    var x = $location.host().split(".");
    return (x.length>2)?(objExistsFilter(views[x[0]][y]))?views[x[0]][y]:views[y]:views[y];
  };

  viewsService.returnViews = function() {
    return views;
  };

  return viewsService;
}).

controller('AppController', ['$scope','Views', function($scope, Views) {    
  $scope.$on("$routeChangeSuccess",function( $currentRoute, $previousRoute ){
    $scope.page = Views.returnView();
  });
}]).

filter('objExists', function () {
  return function (property) {
    try {
      return property;
    } catch (err) {
      return null
    }
  };
});

---

首先要指出的是不要直接使用XMLHttpRequest，只使用angular提供的$http，同时我检查问题首先要指出的是不要直接使用XMLHttpRequest，只使用angular提供的$http，同时我检查问题