读取url信息：
<html ng-app="myApp">
<head>
<title>angularjs-demo</title>
<script type="text/javascript" src="../../lib/ionic/js/angular/angular.min.js" charset="utf-8"></script>
</head>
<body ng-controller="ctrl">
<div>绝对地址：{{absUrl}}</div>
<div>页面路径：{{path}}</div>
<div>请求主机：{{host}}</div>
<div>主机端口：{{port}}</div>
<div>查询字段：{{search}}</div>
<script>
var app = angular.module('myApp',[]);
app.controller("ctrl",function($scope,$location){
$scope.absUrl = $location.absUrl();
$scope.path = $location.path();
$scope.host = $location.host();
$scope.port = $location.port();
$scope.search = $location.search();
});
</script>
</body>
</html>