Faces Servlet - ClassNotFound异常

Question

我正在使用JSF 1.2和PrimeFaces 3.5开发一个示例应用程序.我在桌面上安装了RAD,并创建了一个新的动态Web项目.我用primeface编辑器标签写了xhtml文件.但是,当我运行项目时......虽然servlet存在于类路径中,但它正在为FacesServlet抛出"java.lang.ClassNotFoundException".

我的web.xml看起来像这样

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <display-name>
    PrimeFacesNew</display-name>
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <!-- JSF mapping -->
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <!-- Map these files with JSF -->
     <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.xhtml</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>HelloWorld.xhtml</welcome-file>
    </welcome-file-list>
</web-app>

我的HelloWorld.xhtml看起来像这样

<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">
<h:head>
</h:head>
<h:body>
    <h1>Hello World PrimeFaces</h1>

    <h:form>
       <p:editor value="This is PrimeFace editor" />
    </h:form>

</h:body>
</html>

我已将以下jar添加到我的类路径中..

myfaces-api-2.1.12.jar
myfaces-impl-2.1.12.jar
myfaces-bundle-2.1.12.jar
slf4j-api-1.7.5.jar
slf4j-simple-1.7.5.jar
primefaces-3.5.jar

当我在RAD中使用tomcat 6.0运行时,它会抛出以下异常..

SEVERE: Error loading WebappClassLoader
  delegate: false
  repositories:
    /WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@78a978a9
 javax.faces.webapp.FacesServlet
Throwable occurred: java.lang.ClassNotFoundException: javax.faces.webapp.FacesServlet
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1083)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4045)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
    at org.apache.catalina.core.StandardService.start(StandardService.java:516)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:599)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Jun 18, 2013 1:15:10 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /primefaces threw load() exception
Throwable occurred: java.lang.ClassNotFoundException: javax.faces.webapp.FacesServlet
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1083)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4045)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
    at org.apache.catalina.core.StandardService.start(StandardService.java:516)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:599)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

主要面部组件也在RAD中显示为问号.我在谷歌尝试了所有可能的解决方案,但它对我没用.请纠正我在哪里做错了..

谢谢.

Answer 1

这个问题发生在我身上,因为我没有在项目属性的Deployement选项中提供路径:

右键单击项目--->选择"属性" - >部署程序集 - >"添加"选项 - >选择"java构建路径条目" - >选择路径

Answer 2

由于您使用的是 JSF 1.2，因此需要使用 jsf-impl.jar 和 jsf-api.jar。其他人也遇到这个问题，阅读这篇文章，其中讨论了不兼容性，并且您指定了此处描述的相同错误。希望这可以帮助您解决这个 classNotFound 错误。