无法在我的控制器中访问我的服务(未定义) [英] Can't access my service in my controller (undefined)

问题描述

我正在尝试创建一个服务来执行一些 AJAX 请求.但是，当我尝试在我的控制器中用它做一些事情时，我的服务总是变得未定义.这是我的代码.

I am trying to create a service to do some AJAX requests. However, my service keeps getting undefined when I try to do something with it in my controllers. Here is my code.

我在这里找到了很多示例，并且我尝试遵循其中的很多示例，但是无论我做什么，我的服务都一直未定义.

I have found a lot of examples on here, and I've tried to follow a lot of them but no matter what I do my service keeps getting undefined.

我的服务:

MyApp.factory('myService', function($http) {

return {
    findAll: function() {
        return $http.get('/findAll')
        .then(function(result) {
            return result.data;
        });
    }
   }
});

我的控制器:

MyApp.controller('UserController', ['$scope', '$http', 'myService', function($scope, $http, $log, myService) {

// Whatever I do with myService here it gets undefined.
//$scope.test = myService.findAll();
//myService.findAll();


}]);

我认为我没有正确注入它，但我看不出有什么问题.我对 Angular 还很陌生，所以..任何指针将不胜感激.

I assume I don't inject it correctly but I can't see whats wrong. I'm fairly new to Angular so.. Any pointers would be appreciated.

推荐答案

从注入中删除 $log.您当前正在将 myService 服务命名"为 $log，因此控制器内的 myService 是 undefined.

Remove $log from the injection. You are currently "naming" the myService service to $log and therefore myService inside the controller is undefined.

MyApp.controller('UserController', ['$scope', '$http', 'myService',
    function($scope, $http, myService) {

    // Whatever I do with myService here it gets undefined.
    //$scope.test = myService.findAll();
    //myService.findAll();
}]);

第二种解决方案
为了避免像这样命名"服务，可以不命名地注入它们.

2nd solution
To avoid having to "name" the services like this it's acceptable to inject them without naming them.

MyApp.controller('UserController', function($scope, $http, myService) {

    // Whatever I do with myService here it gets undefined.
    //$scope.test = myService.findAll();
    //myService.findAll();
});

只要记得去掉右括号.

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