Angular1.0路由的Hashbang和HTML5模式

原文答主jupiter

http://*.com/questions/16677528/location-switching-between-html5-and-hashbang-mode-link-rewritingdown vote

The documentationis not very clear about AngularJS routing. It talks about Hashbang and HTML5 mode. In fact, AngularJS routing operates in three modes:

  1. Hashbang Mode
  2. HTML5 Mode
  3. Hashbang in HTML5 Mode

For each mode there is a a respective LocationUrl class (LocationHashbangUrl, LocationUrl and LocationHashbangInHTML5Url).

In order to simulate URL rewriting you must actually set html5mode to true and decorate the $sniffer class as follows:

$provide.decorator('$sniffer', function($delegate) {
$delegate.history = false;
  return $delegate;
});

I will now explain this in more detail:

Hashbang Mode

Configuration:

$routeProvider
.when('/path', {
templateUrl: 'path.html',
});
$locationProvider
.html5Mode(false)
.hashPrefix('!');

This is the case when you need to use URLs with hashes in your HTML files such as in

<a href="index.html#!/path">link</a>
In the Browser you must use the following Link: http://www.example.com/base/index.html#!/base/path

As you can see in pure Hashbang mode all links in the HTML files must begin with the base such as "index.html#!".

HTML5 Mode

Configuration:

$routeProvider
.when('/path', {
templateUrl: 'path.html',
});
$locationProvider
.html5Mode(true);

You should set the base in HTML-file

<html>
<head>
<base href="/">
</head>
</html>

In this mode you can use links without the # in HTML files

<a href="/path">link</a>
Link in Browser:

http://www.example.com/base/path
Hashbang in HTML5 Mode

This mode is activated when we actually use HTML5 mode but in an incompatible browser. We can simulate this mode in a compatible browser by decorating the $sniffer service and setting history to false.

Configuration:

$provide.decorator('$sniffer', function($delegate) {
$delegate.history = false;
return $delegate;
});
$routeProvider
.when('/path', {
templateUrl: 'path.html',
});
$locationProvider
.html5Mode(true)
.hashPrefix('!');

Set the base in HTML-file:

<html>
<head>
<base href="/">
</head>
</html>

In this case the links can also be written without the hash in the HTML file

<a href="/path">link</a>

Link in Browser:

http://www.example.com/index.html#!/base/path

使用最后一种, html内用{{linkPrefix}} 等于'/', 结果自动在/后面加上!#并且能回退自如,直接访问地址栏

(function () {

  'use strict';

  var appConfig = function ($routeProvider, jwtInterceptorProvider, $httpProvider, $locationProvider,$provide) {
$routeProvider.otherwise('/404'); //jwtInterceptorProvider.tokenGetter = function (store) {
// return store.get('jwt'); //可以使用多个decorator
$provide.decorator('$locale', function ($delegate) {
var value = $delegate.DATETIME_FORMATS; value.SHORTDAY = [
"",
"",
"",
"",
"",
"",
""
]; return $delegate;
});
//装饰sniffer
$provide.decorator('$sniffer', function($delegate) {
$delegate.history = false;
return $delegate;
}); $httpProvider.interceptors.push('jwtInterceptor');
$httpProvider.interceptors.push('TokenInterceptor'); $httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=utf-8'; $locationProvider.html5Mode({ enabled: true, requireBase: false, rewriteLinks: true });
$locationProvider.hashPrefix('!');
}; appConfig.$inject = ['$routeProvider', 'jwtInterceptorProvider', '$httpProvider', '$locationProvider','$provide']; var appRun = function ($rootScope,$window, $location, jwtHelper,$translate, AuthService, $sessionStorage,deviceDetector) { $rootScope.isMobile="is_mobile";
$rootScope.screenWidth=$window.innerWidth;
if ((deviceDetector.os==="android"||deviceDetector.os==="ios" ||deviceDetector.os==="windows-phone"||deviceDetector.device==="blackberry")&& $rootScope.screenWidth<)
$rootScope.isMobile=true;
else $rootScope.isMobile=false; // Store user data in $rootScope.account if user is logged in
if ($sessionStorage.jwt && !jwtHelper.isTokenExpired($sessionStorage.jwt)) {
var jwt = $sessionStorage.jwt;
$rootScope.account = jwt && jwtHelper.decodeToken(jwt); } $rootScope.$on('$routeChangeStart', function (e, to) {
if (to.data) {
if (to.data.requiresLogin) {
// Stop users from getting to routes that have value requiresLogin set on true
if (!$sessionStorage.jwt || jwtHelper.isTokenExpired($sessionStorage.jwt)) {
e.preventDefault();
$translate("Token Expired.").then(function(value){ $rootScope.tokenExpired=value;
$window.alert($rootScope.tokenExpired);
}
); $location.path('/');
}
} else {
// Stop users from getting to routes that have value requiresLogin set on false
if ($sessionStorage.jwt && !jwtHelper.isTokenExpired($sessionStorage.jwt)) {
e.preventDefault();
$location.path(AuthService.getLoginRedirectUrl());
}
}
}
}); }; appRun.$inject = ['$rootScope', '$window','$location', 'jwtHelper','$translate', 'AuthService', '$sessionStorage','deviceDetector']; angular
.module('warrantyProcessApp', [
'ngRoute',
... ... ])
.config(appConfig)
.run(appRun); })();

例子

不过我得到的路径是http://www.example.com/#!/base/path

访问根目录是http://www.example.com/#!/ ( 后面的/#!/都是访问时自动rewirte 到地址栏的 )

twitter和17startup的地址url中都有#!,被称为pretty ajax url 
http://twitter.com/#!/username 
http://17startup.com/#!/index 
如果说是地址重写或者是restful风格为什么要用#!这么奇怪的地址呢?
以下内容截取自顾轶灵的回答:
URL 中的 # 本来的用途是跳转到页内锚点。一个 URL 中 # 后的值 (hash tag) 不影响所访问网页的内容,所以搜索引擎在处理仅仅 hash tag 不同的多个 URL 时会当做相同内容从而忽略 hash tag。

但近年来 hash tag 越来越多地被用于 AJAX 请求获取数据,不同 hash tag 对应的网页内容也有所不同,为了有效地区别这种情况和过去传统的页内锚点标示,让搜索引擎更好地抓取 AJAX 数据,Google 提出的解决方案 (似乎是在 2009 年) 是用 #! (被称为 hashbang ) 来进行区分,他们将带有 #! 的 URL 称为 pretty AJAX URL (http://code.google.com/web/ajaxcrawling/docs/getting-started.html F.Y.I.)。当网页爬虫遇到这样的 URL 就会将带不同 hash tag 的 URL 当做不同内容来进行抓取,从而获得更全的信息。

Google 的这一方案如果被其他搜索引擎广泛采纳 (据说 Bing 和 Yahoo! 可能都已支持),无疑将成为一个事实标准,如果富 AJAX 网站想进行进一步的 SEO,也就会越来越多地支持这样的格式。

Twitter 和 Google 前两年曾有过不错的合作,所以支持得比较早吧。

 
以下内容截取自阮一峰的网络日志《URL的井号》
Google抓取#的机制
默认情况下,Google的网络蜘蛛忽视URL的#部分。但是,Google还规定,如果你希望Ajax生成的内容被浏览引擎读取,那么URL中可以使用"#!",Google会自动将其后面的内容转成查询字符串_escaped_fragment_的值。比如,Google发现新版twitter的URL如下:http://twitter.com/#!/username就会自动抓取另一个URL:http://twitter.com/?_escaped_fragment_=/username通过这种机制,Google就可以索引动态的Ajax内容。
文章全文请参考:http://www.ruanyifeng.com/blog/2011/03/url_hash.html

传统jQuery方法:

利用 HTML5 history session management 作为历史记录:

This way you don't have to use hashes in newer browsers and that way the user won't notice a thing.

function route(path) {
$.get(path, function(data) {
//parse data
});
} if (typeof history.pushState !== 'undefined')
{
$(window).bind('popstate', function(e)
{
route(window.location.pathname);
});
$('a').click(function(event) {
event.preventDefault();
history.pushState({},'',this.href);
});
} else {
$(window).bind('hashchange', function(e)
{
route(window.location.hash);
});
$('a').click(function(event) {
event.preventDefault();
$(this).attr('href', '/#'+$(this).attr('href'));
});
}

延伸阅读:

angular 路由去除#号

http://www.cnblogs.com/breakdown/p/3785773.html

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