javascript AngularJS：在自定义服务中执行 $http 请求并返回数据
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AngularJS: Performing $http request inside custom service and returning data
提问by AzzyDude
I have defined a custom http service in angular that looks like this:
我在 angular 中定义了一个自定义 http 服务，如下所示：
angular.module('myApp')
.factory('myhttpserv', function ($http) {
var url = "http://my.ip.address/"
var http = {
async: function (webService) {
var promise = $http.get(url + webService, { cache: true }).then(function (response) {
return response.data;
});
return promise;
}
};
return http;
});
And I can access this service in my controller like so:
我可以像这样在我的控制器中访问这个服务：
angular.module('myApp')
.controller('myCtrl', function (myhttpserv) {
var webService = 'getUser?u=3'
myhttpserv.async(webService).then(function (data) {
console.log(data);
})
});
However I now need to streamline this process so that it is ALL contained inside the service with a static url and it simply returns the data. So that I can just call it in the controller like so:
但是，我现在需要简化此过程，以便它全部包含在具有静态 url 的服务中，并且它只返回数据。这样我就可以像这样在控制器中调用它：
angular.module('myApp')
.controller('myCtrl', function ($scope, myhttpserv) {
console.log(myhttpserv.var1);
console.log(myhttpserv.var2);
etc...
});
I can't seem to tweak the service to get this functionality. Anyone know the correct way to do it?
我似乎无法调整服务来获得此功能。有谁知道正确的方法吗？
回答by Robin Rizvi
Option 1 - Use promise API
选项 1 - 使用承诺 API
angular.module('myApp').factory('myhttpserv', function ($http) {
return $http.get('http://my.ip.address/getUser?u=3', { cache: true });
});
Controller:
控制器：
angular.module('myApp').controller('myCtrl', function ($scope, myhttpserv) {
myhttpserv.then(function(response){
console.log(response.data);
});
});
Option 2 - Using route resolve
选项 2 - 使用路由解析
angular.module('myApp', ['ngRoute']).config(['$routeProvider',
function($routeProvider) {
$routeProvider.
when('/myCtrl', {
templateUrl: 'myView.html',
controller: 'myCtrl',
resolve: {
load: function (myhttpserv) {
return myhttpserv;
}
});
}]);
Service:
服务：
angular.module('myApp').factory('myhttpserv', function ($http) {
var data = {};
var url = "http://my.ip.address/";
var promise = $http.get(url + 'getUser?u=3', { cache: true }).then(function (response) {
data = response.data;
});
return data;
});
Controller:
控制器：
angular.module('myApp')
.controller('myCtrl', function ($scope, myhttpserv) {
console.log(myhttpserv.data.var1);
console.log(myhttpserv.data.var1);
etc...
});
Option 3 - Use $interval service
选项 3 - 使用 $interval 服务
angular.module('myApp').factory('myhttpserv', function ($http) {
var data = {};
var url = "http://my.ip.address/";
var promise = $http.get(url + 'getUser?u=3', { cache: true }).then(function (response) {
data = response.data;
});
return data;
});
Controller:
控制器：
angular.module('myApp').controller('myCtrl', function ($scope, $interval, myhttpserv) {
$scope.intervalPromise = $interval(function(){
if (Object.keys(myhttpserv.data).length!=0)
{
console.log(myhttpserv.data);
$interval.cancel($scope.intervalPromise);
}
}, 100);
});
