angularjs – 从Angular cacheFactory获取密钥

发布时间：2020-12-17 07:00:58 所属栏目：安全来源：网络整理

导读：当我列出$cacheFactory对象时,它有几个方法,但我没有看到实际的键/值缓存. 假设您正在查看$http缓存,$cacheFactory($http)如何获取当前缓存的密钥列表或理想情况下的密钥和值？解决方法使用$cacheFactory的装饰器添加getKeys方法： script src="https://aj

当我列出$cacheFactory对象时,它有几个方法,但我没有看到实际的键/值缓存.

假设您正在查看$http缓存,$cacheFactory($http)如何获取当前缓存的密钥列表或理想情况下的密钥和值？

解决方法

使用$cacheFactory的装饰器添加getKeys方法：

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>


<body ng-app="decorateExample">

  <script>
  function cacheProvider($provide) 
    {
    // monkey-patches $templateCache to have a keys() method
    $provide.decorator('$templateCache',['$delegate',cacheDelegator]);
    }
                                          
  function cacheDelegator($delegate) 
    {
    var keys = [],origPut = $delegate.put;

    $delegate.put = function(key,value) 
      {
      origPut(key,value);
      keys.push(key);
      };

    // we would need cache.peek() to get all keys from $templateCache,but this features was never
    // integrated into Angular: https://github.com/angular/angular.js/pull/3760
    // please note: this is not feature complete,removing templates is NOT considered
    $delegate.getKeys = function() 
         {
         return keys;
         };

    return $delegate;
    }
  
angular.module('decorateExample',[]);
  
angular.module('decorateExample').config(['$provide',cacheProvider]);
</script>

</body>

参考

> AngularJS Issue #3760: Update cacheFactory.js: Added peek() for returning all keys
> Decorate Core Directives in Angular

（编辑：李大同）

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