ejb - How to pass value from managed bean to custom jsf component? -

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• jsf 2 custom components having expression language attribute value don't trigger attribute setter 1 answer

i have created custom jsf component following code:

@facescomponent("mainmenu") public class menucomponent extends uicomponentbase {     private list<menuitem> items;     private string title;      public menucomponent() {     }      public string gettitle() {         return title;     }      public void settitle(string title) {         this.title = title;     }      public list<menuitem> getitems() {         return items;     }      public void setitems(list<menuitem> items) {         this.items = items;     }      public string getfamily() {         return ui.family;     } } 

then added renderer component:

@facesrenderer(componentfamily = ui.family, renderertype = "mainmenurenderer") public class menucomponentrenderer extends renderer {     @override     public void encodebegin(facescontext context, uicomponent component) throws ioexception {         menucomponent menucomponent = (menucomponent) component;         responsewriter responsewriter = context.getresponsewriter();         responsewriter.startelement("ul", menucomponent);         responsewriter.writeattribute("class", "sidebar-menu", "");         // заголовок         responsewriter.startelement("li", menucomponent);         responsewriter.writeattribute("class", "header", "");         responsewriter.write(menucomponent.gettitle());     }      @override     public void encodeend(facescontext context, uicomponent component) throws ioexception {         menucomponent menucomponent = (menucomponent) component;         responsewriter responsewriter = context.getresponsewriter();         responsewriter.endelement("ul");         // title         responsewriter.endelement("li");         // menu items         (menuitem menuitem : menucomponent.getitems()) {         responsewriter.startelement("li", menucomponent);     }     } } 

then registered component in taglib.xml:

<tag>     <tag-name>mainmenu</tag-name>     <component>         <component-type>mainmenu</component-type>         <renderer-type>mainmenurenderer</renderer-type>     </component>     <attribute>         <name>items</name>         <required>true</required>     </attribute>     <attribute>         <name>title</name>         <required>true</required>     </attribute> </tag> 

in jsf page used in following way:

<mds:mainmenu items="${sidebar.menuitems}" title="Главное меню"</mds:mainmenu> 

tag related sidebar managed bean, bean simple possible:

@managedbean(name = "sidebar", eager = true) @requestscoped public class sidebar {     @inject     private menuservice menuservice;     private list<menuitem> menuitems;      public sidebar() {         system.out.println("hello, world!");     }      @postconstruct     public void init(){         setmenuitems(menuservice.getmainmenu());     }      public list<menuitem> getmenuitems() {         return menuitems;     }      public void setmenuitems(list<menuitem> menuitems) {         this.menuitems = menuitems;     } } 

but! have value of "title" attribute in renderer, not "items"! how pass "items" attibute value component? when debug, there no call "sidebar" bean. wrong in code?

object value = menucomponent.getvalueexpression("items").getvalue(context.getelcontext());