我在套接字事件中订阅了我的控制器。 当某个事件发生时,我需要从服务器获取一些数据(我尝试将lb.get()作为函数调用到某个工厂中。)
$scope.counter = 0;
$scope.$on('lEvent', function (event, response) { // socket event
$scope.counter ++;
console.log('counter '+$scope.counter);
lb.get(response[0]).then(function(response){
var Item = {
id: response.id,
mime: response.mime,
name: response.name,
};
$scope.items.push(Item);
console.log("$scope.items"+$scope.items.length);
});
});
// here is a function in my factory
get: function(id) {
deferred = $q.defer();
$http({
method: "post",
url: url,
data: $.param({id: id}),
headers: header
})
.success(function (data) {
deferred.resolve(data);
})
.error(function (data) {
deferred.reject(data);
});
return deferred.promise;
}

想象一下,我有5个套接字事件,但是函数lb.get()调用了4(或3)次而不是5次。你可以在控制台中看到调用的结果:
如您所见,函数lb.get()被调用了4次而不是5次。
我想,我需要像请求队列这样的东西。
答案 0 :(得分:0)
您没有handle
的错误回复方法get
。也许在这种情况下,你的反应就会消失。
您不需要请求队列。
请参阅jsfiddle上的示例。
angular.module('ExampleApp', [])
.controller('ExampleOneController', function($scope, ServiceExample) {
$scope.counter = 0;
$scope.successCounter = 0;
$scope.errorCounter = 0;
$scope.$on('raise.event', function(event, value) {
console.log('counter', $scope.counter);
$scope.counter++;
ServiceExample.get(value).then(function() {
console.log('success response:', $scope.successCounter);
$scope.successCounter++;
}).catch(function() {
console.log('error response:', $scope.errorCounter);
$scope.errorCounter++;
});
});
})
.controller('ExampleTwoController', function($scope) {
$scope.raiseValue = "www.google.com"
$scope.raise = function(val) {
$scope.$emit('raise.event', val);
};
})
.service('ServiceExample', function($http) {
return {
get: function(url) {
return $http({
method: "GET",
url: url
});
}
}
});

.errors {
color: maroon
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="ExampleApp">
<div ng-controller="ExampleOneController">
<h3>
ExampleOneController
</h3>
<form name="ExampleForm" id="ExampleForm">
<pre>counter : {{counter}}</pre>
<pre>successCounter: {{successCounter}}</pre>
<pre class="errors">errorCounter: {{errorCounter}}</pre>
</form>
<div ng-controller="ExampleTwoController">
<h3>
ExampleTwoController
</h3>
<form name="ExampleForm" id="ExampleForm">
<input ng-model="raiseValue">
<br>
<button ng-click="raise(raiseValue)" simple>
Send request to "{{raiseValue}}"
</button>
</form>
</div>
</div>
</body>
&#13;