prettyfaces的URL配置

Named path parameters

<pattern value="/store/#{ cat }/" />

String category = request.getParameter("cat");

EL-injected path parameters

<pattern value="/store/#{ bean.location }/" />
@Named("bean")
@RequestScoped
public class CategoryBean {
	private String category;
	
	/* Getters & Setters */
}
Notice, you can specify both a name and an EL value-injection for the same path-parameter.
<pattern value="/store/#{ cat : bean.location }/" />

Restrict what Path Parameters will accept (Custom regex patterns)

<url-mapping id="archives">
  <pattern value="/#{ /\\d{4}/ year }/#{ /\\d{2}/ month }/" />
  <view-id>/faces/blog/archives.jsf</view-id> 
</url-mapping>
<pattern value="/#{ /[a-z]+/ blogger }/#{ /\\d+/ postId }/" />

Inherit from a parent URL-mapping

<url-mapping parentId="store" id="category"> ... </url-mapping>
<url-mapping id="store"> 
   <pattern value="/store/" /> 
   <~-- Result: /store/ -->
   <view-id value="/faces/shop/store.jsf" />
</url-mapping>

<url-mapping parentId="store" id="category"> 
   <pattern value="/#{category}" /> 
   <~-- Result: /store/#{category} -->
   <view-id value="/faces/shop/category.jsf" /> 
</url-mapping>

<url-mapping parentId="category" id="item"> 
   <pattern value="/#{item}" /> 
   <~-- Result: /store/#{category}/#{item} -->
   <view-id value="/faces/shop/item.jsf" /> 
</url-mapping>

Dynamic view-IDs (DynaView) 这里可以做权限检查

<url-mapping id="home">
	<pattern value="/home/" />
	<view-id> #{bean.getViewPath} </view-id>
</url-mapping>
@Named("bean")
@RequestScoped
public class HomeBean {
	
	@Inject CurrentUser user;
	
	public String getViewPath() {
		if ( user.isLoggedIn() )
		{
			return "/faces/home/home.jsf";
		}
		
		return "/faces/login.jsf";
	}
}








Load data when accessing mapped URLs


<url-mapping id="viewItem">
  <pattern value="/store/item/#{ iid : bean.itemId }/" />
  <view-id>/faces/shop/item.jsf</view-id> 
  <action>#{bean.loadItem}</action>              //这个就是相当于 页面数据加载初始化方法
</url-mapping>


Invoking navigation from a page-action

<url-mapping id="viewItem">
  <pattern value="/store/item/#{ iid : bean.itemId }/" />
  <view-id>/faces/shop/item.jsf</view-id> 
  <action>#{bean.loadItem}</action>
</url-mapping>

@Named("bean")
@RequestScoped
public class CategoryBean {
	
	public String loadItem() {
		if ( itemId != null ) {
			this.item = items.findById(itemId);
			return null;                                                //return null  继续访问页面
		}

		return "failure";                                                //导向到一个新的地址，这就像之前用到的 动态 view-id一样
	}
}