AngularJS $ http导致两次请求？(AngularJS $http cause twice request?)
这是我的JS
var rentalkika = angular.module('rentalkika', ['ngRoute']); rentalkika.config(function ($routeProvider) { $routeProvider .when('/', { templateUrl : 'pages/main.html' }) .when('/sewa_mobil', { templateUrl : 'pages/sewa_mobil.html', controller : 'FilterController' }) .when('/contact', { templateUrl : 'pages/contact.html', controller : 'ContactController' }) .when('/register', { templateUrl : 'pages/register.html' }); }); rentalkika.controller('ContactController', function ($scope, $http) { var config = { headers: { 'X-Parse-Application-Id' : 'secret' } }; $http.get('http://128.199.249.233:1337/parse/classes/vehicle', config).then(function (response){ console.log(response.data.results); }, function (error) { console.log(response); }); });这是我的contact.html
<div> tes about html </div>当我到localhost:3000/#/contact然后检查网络部分的chrome时，它会在http://128.199.249.233:1337/parse/classes/vehicle上显示两次请求，第一次返回200响应，第二次返回304 。
这是我的index.html
<!DOCTYPE HTML>
<html>
<head>
<title>Koupon - Index</title>
<!-- meta info -->
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="keywords" content="Koupon HTML5 Template" />
<meta name="description" content="Koupon - Premiun HTML5 Template for Coupons Website">
<meta name="author" content="Dark Cyber" >
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Google fonts -->
<!-- <link href='http://fonts.googleapis.com/css?family=Open+Sans:400italic,400,600' rel='stylesheet' type='text/css'> -->
<!-- <link href='http://fonts.googleapis.com/css?family=Lato:400,700' rel='stylesheet' type='text/css'> -->
<!-- Bootstrap styles -->
<link rel="stylesheet" href="css/boostrap.css">
<link rel="stylesheet" href="css/boostrap_responsive.css">
<!-- Font Awesome styles (icons) -->
<link rel="stylesheet" href="css/font_awesome.css">
<!-- Main Template styles -->
<link rel="stylesheet" href="css/styles.css">
<!-- IE 8 Fallback -->
<!--[if lt IE 9]>
<link rel="stylesheet" type="text/css" href="css/ie.css" />
<![endif]-->
<!-- Your custom styles (blank file) -->
<link rel="stylesheet" href="css/mystyles.css">
</head>
<body ng-app="rentalkika">
<!-- //////////////////////////////////
//////////////MAIN HEADER/////////////
////////////////////////////////////-->
<header class="main">
<div class="container">
<div class="row">
<div class="span2">
<a href="index.html">
<img src="img/logo-small.png" alt="logo" title="logo" class="logo">
</a>
</div>
<div class="span8">
<!-- MAIN NAVIGATION -->
<div class="flexnav-menu-button" id="flexnav-menu-button">Menu</div>
<nav>
<ul class="nav nav-pills flexnav" id="flexnav" data-breakpoint="800">
<li class="active"><a href="index.html">Home</a>
</li>
<li><a href="#">Layanan</a>
<ul>
<li><a href="#sewa_mobil">Sewa Mobil</a>
</li>
<li><a href="#">Shuttle</a>
</li>
</ul>
</li>
<li><a href="features-typography.html">Paket Wisata</a>
</li>
<li><a href="blog-sidebar-right.html">Blog</a>
</li>
<li><a href="#">FAQ</a>
</li>
<li><a href="#">Tertarik menjadi mitra kami?</a></li>
<li><a href="#contact">Contact</a>
</li>
</ul>
</nav>
<!-- END MAIN NAVIGATION -->
</div>
<div class="span2">
<!-- LOGIN REGISTER LINKS -->
<ul class="login-register">
<li><a class="popup-text" href="#login-dialog" data-effect="mfp-move-from-top"><i class="icon-signin"></i>Sign in</a>
</li>
<li><a href="#register"><i class="icon-edit"></i>Sign up</a>
</li>
</ul>
</div>
</div>
</div>
</header>
<!-- LOGIN REGISTER LINKS CONTENT -->
<div id="login-dialog" class="mfp-with-anim mfp-hide mfp-dialog clearfix">
<i class="icon-signin dialog-icon"></i>
<h3>Member Login</h3>
<h5>Welcome back, friend. Login to get started</h5>
<div class="row-fluid">
<form class="dialog-form">
<label>E-mail</label>
<input type="text" placeholder="email@domain.com" class="span12">
<label>Password</label>
<input type="password" placeholder="My secret password" class="span12">
<label class="checkbox">
<input type="checkbox">Remember me
</label>
<input type="submit" value="Sign in" class="btn btn-primary">
</form>
</div>
<ul class="dialog-alt-links">
<li><a class="popup-text" href="#register-dialog" data-effect="mfp-zoom-out">Not member yet</a>
</li>
<li><a class="popup-text" href="#password-recover-dialog" data-effect="mfp-zoom-out">Forgot password</a>
</li>
</ul>
</div>
<div id="password-recover-dialog" class="mfp-with-anim mfp-hide mfp-dialog clearfix">
<i class="icon-retweet dialog-icon"></i>
<h3>Password Recovery</h3>
<h5>Fortgot your password? Don't worry we can deal with it</h5>
<div class="row-fluid">
<form class="dialog-form">
<label>E-mail</label>
<input type="text" placeholder="email@domain.com" class="span12">
<input type="submit" value="Request new password" class="btn btn-primary">
</form>
</div>
</div>
<!-- END LOGIN REGISTER LINKS CONTENT -->
<!-- //////////////////////////////////
//////////////END MAIN HEADER//////////
////////////////////////////////////-->
<!-- //// START PAGE CONTENT -->
<div ng-view>
</div>
<!-- END PAGE CONTENT /// -->
<!-- //////////////////////////////////
//////////////MAIN FOOTER//////////////
////////////////////////////////////-->
<footer class="main">
<div class="footer-top-area">
<div class="container">
<div class="row row-wrap">
<div class="span3">
<a href="index.html">
<img src="img/logo.png" alt="logo" title="logo" class="logo">
</a>
</div>
<div class="span3">
<h5>Get it Anywhere</h5>
<p>Ultrices varius semper laoreet molestie purus euismod fames odio volutpat eleifend turpis nec cras quam litora dignissim curae lacus platea sociis mauris hendrerit sed fringilla dignissim cum mi amet orci</p>
<ul class="list list-app-download">
<li>
<a href="#" class="icon-windows box-icon" title="Get Windows Phone App" data-toggle="tooltip"></a>
</li>
<li>
<a href="#" class="icon-apple box-icon" title="Get iPhone App" data-toggle="tooltip"></a>
</li>
<li>
<a href="#" class="icon-android box-icon" title="Get Android App" data-toggle="tooltip"></a>
</li>
</ul>
</div>
<div class="span3">
<h5>Koupon on Twitter</h5>
<!-- START TWITTER -->
<div class="twitter-ticker" id="twitter-ticker"></div>
<!-- END TWITTER -->
</div>
<div class="span3">
<h5>Recent News</h5>
<ul class="list post-list">
<li class="post-thumb">
<h5 class="title"><a href="#">Gravida porttitor vulputate</a></h5><small>05 August, 2013</small>
<p class="post-desciption">Dignissim phasellus magnis mus duis nisl ut lacus vehicula velit</p>
</li>
<li class="post-thumb">
<h5 class="title"><a href="#">A duis</a></h5><small>29 July, 2013</small>
<p class="post-desciption">Class augue curae accumsan tempor semper id integer adipiscing mattis</p>
</li>
</ul>
</div>
</div>
</div>
</div>
<div class="container">
<div class="row row-wrap">
<div class="span3">
<h5>About Koupon</h5>
<p>Tellus auctor sem sociosqu cras cursus vitae erat aliquam adipiscing iaculis suscipit curabitur hac hac congue netus integer ridiculus volutpat varius suspendisse velit venenatis facilisi velit quis volutpat enim ipsum</p>
</div>
<div class="span2">
<h5>Company</h5>
<ul class="list">
<li><a href="#">Home</a>
</li>
<li><a href="#">Blog</a>
</li>
<li><a href="#">Press</a>
</li>
<li><a href="#">Jobs</a>
</li>
<li><a href="#">Investors</a>
</li>
</ul>
</div>
<div class="span2">
<h5>For Business</h5>
<ul class="list">
<li><a href="#">Advertising</a>
</li>
<li><a href="#">Runnig a Deal</a>
</li>
<li><a href="#">Accept Payments</a>
</li>
<li><a href="#">Referral Program</a>
</li>
<li><a href="#">Developers/API</a>
</li>
<li><a href="#">Merchant Terms</a>
</li>
</ul>
</div>
<div class="span2">
<h5>Get Help</h5>
<ul class="list">
<li><a href="#">FAQ</a>
</li>
<li><a href="#">Customer Support</a>
</li>
<li><a href="#">Return Policy</a>
</li>
<li><a href="#">Terms Of Use</a>
</li>
<li><a href="#">Privacy Statement</a>
</li>
</ul>
</div>
<div class="span3">
<h5>Keep in touch</h5>
<p>Mauris mus tortor leo augue non sociosqu ridiculus sagittis odio</p>
<ul class="list list-social">
<li>
<a href="#" class="icon-facebook box-icon" data-toggle="tooltip" title="Facebook"></a>
</li>
<li>
<a href="#" class="icon-twitter box-icon" data-toggle="tooltip" title="Twitter"></a>
</li>
<li>
<a href="#" class="icon-flickr box-icon" data-toggle="tooltip" title="Flickr"></a>
</li>
<li>
<a href="#" class="icon-linkedin box-icon" data-toggle="tooltip" title="Linkedin"></a>
</li>
<li>
<a href="#" class="icon-tumblr box-icon" data-toggle="tooltip" title="Tumblr"></a>
</li>
</ul>
</div>
</div>
</div>
</footer>
<!-- //////////////////////////////////
//////////////END MAIN FOOTER/////////
////////////////////////////////////-->
<!-- Scripts queries -->
<script src="js/jquery.js"></script>
<script src="js/boostrap.min.js"></script>
<script src="js/nivo_slider.min.js"></script>
<script src="js/countdown.min.js"></script>
<script src="js/flexnav.min.js"></script>
<script src="js/magnific.min.js"></script>
<script src="js/tweet.min.js"></script>
<!--
<script src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
-->
<script src="js/gmap3.min.js"></script>
<script src="js/wilto_slider.min.js"></script>
<script src="js/mediaelement.min.js"></script>
<script src="js/fitvids.min.js"></script>
<script src="js/mail.min.js"></script>
<script src="js/angular.min.js"></script>
<script src="js/angular-route.js"></script>
<script src="js/app.js"></script>
<!-- Custom scripts -->
<script src="js/custom.js"></script>
</body>
</html>
我的代码有问题或遗漏了吗？
Here is my JS
var rentalkika = angular.module('rentalkika', ['ngRoute']);
rentalkika.config(function ($routeProvider) {
$routeProvider
.when('/', {
templateUrl : 'pages/main.html'
})
.when('/sewa_mobil', {
templateUrl : 'pages/sewa_mobil.html',
controller : 'FilterController'
})
.when('/contact', {
templateUrl : 'pages/contact.html',
controller : 'ContactController'
})
.when('/register', {
templateUrl : 'pages/register.html'
});
});
rentalkika.controller('ContactController', function ($scope, $http) {
var config = {
headers: { 'X-Parse-Application-Id' : 'secret' }
};
$http.get('http://128.199.249.233:1337/parse/classes/vehicle', config).then(function (response){
console.log(response.data.results);
}, function (error) {
console.log(response);
});
});
Here is my contact.html
<div>
tes about html
</div>
When I go to localhost:3000/#/contact then inspect chrome in network section, it show twice request on http://128.199.249.233:1337/parse/classes/vehicle the first return 200 response and second return 304.
Here is my index.html
<!DOCTYPE HTML>
<html>
<head>
<title>Koupon - Index</title>
<!-- meta info -->
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="keywords" content="Koupon HTML5 Template" />
<meta name="description" content="Koupon - Premiun HTML5 Template for Coupons Website">
<meta name="author" content="Dark Cyber" >
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Google fonts -->
<!-- <link href='http://fonts.googleapis.com/css?family=Open+Sans:400italic,400,600' rel='stylesheet' type='text/css'> -->
<!-- <link href='http://fonts.googleapis.com/css?family=Lato:400,700' rel='stylesheet' type='text/css'> -->
<!-- Bootstrap styles -->
<link rel="stylesheet" href="css/boostrap.css">
<link rel="stylesheet" href="css/boostrap_responsive.css">
<!-- Font Awesome styles (icons) -->
<link rel="stylesheet" href="css/font_awesome.css">
<!-- Main Template styles -->
<link rel="stylesheet" href="css/styles.css">
<!-- IE 8 Fallback -->
<!--[if lt IE 9]>
<link rel="stylesheet" type="text/css" href="css/ie.css" />
<![endif]-->
<!-- Your custom styles (blank file) -->
<link rel="stylesheet" href="css/mystyles.css">
</head>
<body ng-app="rentalkika">
<!-- //////////////////////////////////
//////////////MAIN HEADER/////////////
////////////////////////////////////-->
<header class="main">
<div class="container">
<div class="row">
<div class="span2">
<a href="index.html">
<img src="img/logo-small.png" alt="logo" title="logo" class="logo">
</a>
</div>
<div class="span8">
<!-- MAIN NAVIGATION -->
<div class="flexnav-menu-button" id="flexnav-menu-button">Menu</div>
<nav>
<ul class="nav nav-pills flexnav" id="flexnav" data-breakpoint="800">
<li class="active"><a href="index.html">Home</a>
</li>
<li><a href="#">Layanan</a>
<ul>
<li><a href="#sewa_mobil">Sewa Mobil</a>
</li>
<li><a href="#">Shuttle</a>
</li>
</ul>
</li>
<li><a href="features-typography.html">Paket Wisata</a>
</li>
<li><a href="blog-sidebar-right.html">Blog</a>
</li>
<li><a href="#">FAQ</a>
</li>
<li><a href="#">Tertarik menjadi mitra kami?</a></li>
<li><a href="#contact">Contact</a>
</li>
</ul>
</nav>
<!-- END MAIN NAVIGATION -->
</div>
<div class="span2">
<!-- LOGIN REGISTER LINKS -->
<ul class="login-register">
<li><a class="popup-text" href="#login-dialog" data-effect="mfp-move-from-top"><i class="icon-signin"></i>Sign in</a>
</li>
<li><a href="#register"><i class="icon-edit"></i>Sign up</a>
</li>
</ul>
</div>
</div>
</div>
</header>
<!-- LOGIN REGISTER LINKS CONTENT -->
<div id="login-dialog" class="mfp-with-anim mfp-hide mfp-dialog clearfix">
<i class="icon-signin dialog-icon"></i>
<h3>Member Login</h3>
<h5>Welcome back, friend. Login to get started</h5>
<div class="row-fluid">
<form class="dialog-form">
<label>E-mail</label>
<input type="text" placeholder="email@domain.com" class="span12">
<label>Password</label>
<input type="password" placeholder="My secret password" class="span12">
<label class="checkbox">
<input type="checkbox">Remember me
</label>
<input type="submit" value="Sign in" class="btn btn-primary">
</form>
</div>
<ul class="dialog-alt-links">
<li><a class="popup-text" href="#register-dialog" data-effect="mfp-zoom-out">Not member yet</a>
</li>
<li><a class="popup-text" href="#password-recover-dialog" data-effect="mfp-zoom-out">Forgot password</a>
</li>
</ul>
</div>
<div id="password-recover-dialog" class="mfp-with-anim mfp-hide mfp-dialog clearfix">
<i class="icon-retweet dialog-icon"></i>
<h3>Password Recovery</h3>
<h5>Fortgot your password? Don't worry we can deal with it</h5>
<div class="row-fluid">
<form class="dialog-form">
<label>E-mail</label>
<input type="text" placeholder="email@domain.com" class="span12">
<input type="submit" value="Request new password" class="btn btn-primary">
</form>
</div>
</div>
<!-- END LOGIN REGISTER LINKS CONTENT -->
<!-- //////////////////////////////////
//////////////END MAIN HEADER//////////
////////////////////////////////////-->
<!-- //// START PAGE CONTENT -->
<div ng-view>
</div>
<!-- END PAGE CONTENT /// -->
<!-- //////////////////////////////////
//////////////MAIN FOOTER//////////////
////////////////////////////////////-->
<footer class="main">
<div class="footer-top-area">
<div class="container">
<div class="row row-wrap">
<div class="span3">
<a href="index.html">
<img src="img/logo.png" alt="logo" title="logo" class="logo">
</a>
</div>
<div class="span3">
<h5>Get it Anywhere</h5>
<p>Ultrices varius semper laoreet molestie purus euismod fames odio volutpat eleifend turpis nec cras quam litora dignissim curae lacus platea sociis mauris hendrerit sed fringilla dignissim cum mi amet orci</p>
<ul class="list list-app-download">
<li>
<a href="#" class="icon-windows box-icon" title="Get Windows Phone App" data-toggle="tooltip"></a>
</li>
<li>
<a href="#" class="icon-apple box-icon" title="Get iPhone App" data-toggle="tooltip"></a>
</li>
<li>
<a href="#" class="icon-android box-icon" title="Get Android App" data-toggle="tooltip"></a>
</li>
</ul>
</div>
<div class="span3">
<h5>Koupon on Twitter</h5>
<!-- START TWITTER -->
<div class="twitter-ticker" id="twitter-ticker"></div>
<!-- END TWITTER -->
</div>
<div class="span3">
<h5>Recent News</h5>
<ul class="list post-list">
<li class="post-thumb">
<h5 class="title"><a href="#">Gravida porttitor vulputate</a></h5><small>05 August, 2013</small>
<p class="post-desciption">Dignissim phasellus magnis mus duis nisl ut lacus vehicula velit</p>
</li>
<li class="post-thumb">
<h5 class="title"><a href="#">A duis</a></h5><small>29 July, 2013</small>
<p class="post-desciption">Class augue curae accumsan tempor semper id integer adipiscing mattis</p>
</li>
</ul>
</div>
</div>
</div>
</div>
<div class="container">
<div class="row row-wrap">
<div class="span3">
<h5>About Koupon</h5>
<p>Tellus auctor sem sociosqu cras cursus vitae erat aliquam adipiscing iaculis suscipit curabitur hac hac congue netus integer ridiculus volutpat varius suspendisse velit venenatis facilisi velit quis volutpat enim ipsum</p>
</div>
<div class="span2">
<h5>Company</h5>
<ul class="list">
<li><a href="#">Home</a>
</li>
<li><a href="#">Blog</a>
</li>
<li><a href="#">Press</a>
</li>
<li><a href="#">Jobs</a>
</li>
<li><a href="#">Investors</a>
</li>
</ul>
</div>
<div class="span2">
<h5>For Business</h5>
<ul class="list">
<li><a href="#">Advertising</a>
</li>
<li><a href="#">Runnig a Deal</a>
</li>
<li><a href="#">Accept Payments</a>
</li>
<li><a href="#">Referral Program</a>
</li>
<li><a href="#">Developers/API</a>
</li>
<li><a href="#">Merchant Terms</a>
</li>
</ul>
</div>
<div class="span2">
<h5>Get Help</h5>
<ul class="list">
<li><a href="#">FAQ</a>
</li>
<li><a href="#">Customer Support</a>
</li>
<li><a href="#">Return Policy</a>
</li>
<li><a href="#">Terms Of Use</a>
</li>
<li><a href="#">Privacy Statement</a>
</li>
</ul>
</div>
<div class="span3">
<h5>Keep in touch</h5>
<p>Mauris mus tortor leo augue non sociosqu ridiculus sagittis odio</p>
<ul class="list list-social">
<li>
<a href="#" class="icon-facebook box-icon" data-toggle="tooltip" title="Facebook"></a>
</li>
<li>
<a href="#" class="icon-twitter box-icon" data-toggle="tooltip" title="Twitter"></a>
</li>
<li>
<a href="#" class="icon-flickr box-icon" data-toggle="tooltip" title="Flickr"></a>
</li>
<li>
<a href="#" class="icon-linkedin box-icon" data-toggle="tooltip" title="Linkedin"></a>
</li>
<li>
<a href="#" class="icon-tumblr box-icon" data-toggle="tooltip" title="Tumblr"></a>
</li>
</ul>
</div>
</div>
</div>
</footer>
<!-- //////////////////////////////////
//////////////END MAIN FOOTER/////////
////////////////////////////////////-->
<!-- Scripts queries -->
<script src="js/jquery.js"></script>
<script src="js/boostrap.min.js"></script>
<script src="js/nivo_slider.min.js"></script>
<script src="js/countdown.min.js"></script>
<script src="js/flexnav.min.js"></script>
<script src="js/magnific.min.js"></script>
<script src="js/tweet.min.js"></script>
<!--
<script src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
-->
<script src="js/gmap3.min.js"></script>
<script src="js/wilto_slider.min.js"></script>
<script src="js/mediaelement.min.js"></script>
<script src="js/fitvids.min.js"></script>
<script src="js/mail.min.js"></script>
<script src="js/angular.min.js"></script>
<script src="js/angular-route.js"></script>
<script src="js/app.js"></script>
<!-- Custom scripts -->
<script src="js/custom.js"></script>
</body>
</html>
Is something wrong or missing with my code?
最满意答案
第一个请求可以是OPTIONS请求，或者是在CORS正在使用时产生的所谓Preflighted请求 。 预检请求会检查跨站点请求是否安全。
The first request is propably an OPTIONS request or a so called Preflighted request which is made when CORS is in use. A preflight request is made to check if the cross site request is safe.
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