yaf框架流程三

路由的原理请看http://yaf.laruence.com/manual/yaf.routes.html这个链接

要点：路由的顺序是堆栈模式的，及最后添加的路由规则最优先。由上两篇可知，定义的第一条路由是application实例化时候的new Yaf_Route_Static()。

然后在bootstrap里有初始化路由的操作，主要方法是：
1.从配置添加

$routes = $this->config->routes;
$router = $dispatcher->getRouter();
$router->addConfig($routes);

2.语句添加
$route = new Yaf_Route_Rewrite(
"/product/list/:id/:name",
array(
"controller" => "product",
"action" => "info",
)
);

$router->addRoute('dummy', $route);

通过$dispatcher->getRouter()->getRoutes()可以查看到

array (size=7)
  '_default' => 
    object(Yaf_Route_Static)[6]
  'index' => 
    object(Yaf_Route_Regex)[12]
      protected '_route' => string '#^/([a-zA-Z]+)/?#' (length=17)
      protected '_default' => 
        array (size=3)
          'module' => string 'Index' (length=5)
          'controller' => string 'Index' (length=5)
          'action' => string 'Index' (length=5)
      protected '_maps' => 
        array (size=1)
          1 => string 'name' (length=4)
      protected '_verify' => 
        array (size=3)
          'module' => string 'Index' (length=5)
          'controller' => string 'Index' (length=5)
          'action' => string 'Index' (length=5)
      protected '_reverse' => null
  'regex' => 
    object(Yaf_Route_Regex)[13]
      protected '_route' => string '#^list/([^/]*)/([^/]*)#' (length=23)
      protected '_default' => 
        array (size=2)
          'controller' => string 'Index' (length=5)
          'action' => string 'action' (length=6)
      protected '_maps' => 
        array (size=2)
          1 => string 'name' (length=4)
          2 => string 'value' (length=5)
      protected '_verify' => 
        array (size=2)
          'controller' => string 'Index' (length=5)
          'action' => string 'action' (length=6)
      protected '_reverse' => null
  'simple' => 
    object(Yaf_Route_Simple)[14]
      protected 'controller' => string 'c' (length=1)
      protected 'module' => string 'm' (length=1)
      protected 'action' => string 'a' (length=1)
  'supervar' => 
    object(Yaf_Route_Supervar)[15]
      protected '_var_name' => string 'r' (length=1)
  'rewrite' => 
    object(Yaf_Route_Rewrite)[16]
      protected '_route' => string '/product/:name/:value' (length=21)
      protected '_default' => 
        array (size=2)
          'controller' => string 'product' (length=7)
          'action' => string 'info' (length=4)
      protected '_verify' => 
        array (size=2)
          'controller' => string 'product' (length=7)
          'action' => string 'info' (length=4)
      protected '_reverse' => null
  'dummy' => 
    object(Yaf_Route_Rewrite)[17]
      protected '_route' => string '/product/list/:id/:name' (length=23)
      protected '_default' => 
        array (size=2)
          'controller' => string 'product' (length=7)
          'action' => string 'info' (length=4)
      protected '_verify' => null
      protected '_reverse' => null

可以看出保存为一个数组，顺序与配置的顺序一致，语句最后添加的也在最后。