Eclipse Facelets项目中无法识别Primefaces标记

   <groupId>org.primefaces</groupId>

   <artifactId>primefaces</artifactId>

   <version>6.2</version>

   <param-name>javax.faces.FACELETS_VIEW_MAPPED_PATH</param-name>

   <param-value>/WEB-INF/components</param-value>

   xmlns:f="http://java.sun.com/jsf/core"

   xmlns:h="http://java.sun.com/jsf/html"

   xmlns:p="http://primefaces.org/ui">

   <h:head>

       <title>My Panel</title>

   </h:head>

   <h:body>

       <p:panel header="My Panel">

           <p:outputLabel value="Hello, World!" />

       </p:panel>

   </h:body>

   xmlns:f="http://java.sun.com/jsf/core"

   xmlns:h="http://java.sun.com/jsf/html"

   xmlns:p="http://primefaces.org/ui">

   <h:head>

       <title>My Panel</title>

   </h:head>

   <h:body>

       <h:outputLabel value="Hello, World!" />

   </h:body>