$http 是 AngularJS 中的一个核心服务,用于读取远程服务器的数据。
读取 JSON 文件
下是存储在web服务器上的 JSON 文件:
{
"records": [
{
"Name": "Alfreds Futterkiste",
"City": "Berlin",
"Country": "Germany"
},
{
"Name": "Ana Trujillo Emparedados y helados",
"City": "Mxico D.F.",
"Country": "Mexico"
},
{
"Name": "Antonio Moreno Taquera",
"City": "Mxico D.F.",
"Country": "Mexico"
},
{
"Name": "Around the Horn",
"City": "London",
"Country": "UK"
},
{
"Name": "B's Beverages",
"City": "London",
"Country": "UK"
},
{
"Name": "Berglunds snabbk枚p",
"City": "Lule",
"Country": "Sweden"
},
{
"Name": "Blauer See Delikatessen",
"City": "Mannheim",
"Country": "Germany"
},
{
"Name": "Blondel pre et fils",
"City": "Strasbourg",
"Country": "France"
},
{
"Name": "Blido Comidas preparadas",
"City": "Madrid",
"Country": "Spain"
},
{
"Name": "Bon app'",
"City": "Marseille",
"Country": "France"
},
{
"Name": "Bottom-Dollar Marketse",
"City": "Tsawassen",
"Country": "Canada"
},
{
"Name": "Cactus Comidas para llevar",
"City": "Buenos Aires",
"Country": "Argentina"
},
{
"Name": "Centro comercial Moctezuma",
"City": "Mxico D.F.",
"Country": "Mexico"
},
{
"Name": "Chop-suey Chinese",
"City": "Bern",
"Country": "Switzerland"
},
{
"Name": "Comrcio Mineiro",
"City": "So Paulo",
"Country": "Brazil"
}
]
}
AngularJS $http
AngularJS $http 是一个用于读取web服务器上数据的服务。
$http.get(url) 是用于读取服务器数据的函数。
<div ng-app="myApp" ng-controller="customersCtrl">
<ul>
<li ng-repeat="x in names">
{{ x.Name ', ' x.Country }}
</li>
</ul>
</div>
<script type="text/javascript" src="js/angular.min.js"></script>
<script>
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope, $http) {
$http.get("js/text.json")
.success(function(response) {$scope.names = response.records;});
});
</script>
结果:
- Alfreds Futterkiste, Germany
- Ana Trujillo Emparedados y helados, Mexico
- Antonio Moreno Taquera, Mexico
- Around the Horn, UK
- B's Beverages, UK
- Berglunds snabbk枚p, Sweden
- Blauer See Delikatessen, Germany
- Blondel pre et fils, France
- Blido Comidas preparadas, Spain
- Bon app', France
- Bottom-Dollar Marketse, Canada
- Cactus Comidas para llevar, Argentina
- Centro comercial Moctezuma, Mexico
- Chop-suey Chinese, Switzerland
- Comrcio Mineiro, Brazil
应用解析:
AngularJS 应用通过 ng-app 定义。应用在 <div> 中执行。
ng-controller 指令设置了 controller 对象 名。
函数 customersController 是一个标准的 JavaScript 对象构造器。
控制器对象有一个属性: $scope.names。
$http.get() 从web服务器上读取静态 JSON 数据。
服务器数据文件为: 我这儿是写了text.json。
当从服务端载入 JSON 数据时,$scope.names 变为一个数组。
注:以上代码也可以用于读取数据库数据。
转载地址:http://www.runoob.com/angularjs/angularjs-http.html
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