jsf应用中，页面未能正常跳转！

请求页面未能从jsfpage.jsp跳转到jsfpage2.jsp页面，花了一整个晚上都搞不请原因所在，请高手指点！代码如下：//web.xml<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>
simple
</display-name>
<context-param>
<param-name>javax.faces.CONFIG_FILES</param-name>
<param-value>/WEB-INF/faces-config.xml</param-value>
</context-param>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
//faces-config.xml
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE faces-config PUBLIC
"-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
"http://java.sun.com/dtd/web-facesconfig_1_1.dtd"><faces-config>
   <navigation-rule>
      <from-view-id>/jsfpage.jsp</from-view-id>
      <navigation-case>
         <from-outcome>submit</from-outcome>
         <to-view-id>/jsfpage2.jsp</to-view-id>
         <redirect/>
      </navigation-case>
   </navigation-rule>   <managed-bean>
      <managed-bean-name>typedName</managed-bean-name>
      <managed-bean-class>simple.practice.TypedName</managed-bean-class>
      <managed-bean-scope>session</managed-bean-scope>
   </managed-bean>
</faces-config>//TypedName Bean
package simple.practice;public class TypedName {
String name;

public String getName()
{
return name;
}

public void setName(String name)
{
this.name = name;
}
}
//jsfpage1.jsp
<%@ taglib uri = "http://java.sun.com/jsf/core" prefix = "f" %>
<%@ taglib uri = "http://java.sun.com/jsf/html" prefix = "h" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<f:view>
<head>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsf 1st try</title>
</head>
<body>
<h:form>
<table>
<tr>
<td>type your name:</td>
<td>
<h:inputText value = "#{typedName.name}"/>
</td>
</tr>
</table>
<h:commandButton value = "OK" action = "submit"/>
</h:form>
</body>
</f:view>
</html>//jsfpage2.jsp
<%@ taglib uri = "http://java.sun.com/jsf/core" prefix = "f" %>
<%@ taglib uri = "http://java.sun.com/jsf/html" prefix = "h" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<f:view>
<head>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsf 1st try</title>
</head>
<body>
you typed the name:<h:outputText value = "#{typedName.name}"/>
</body>
</f:view>
</html>

解决方案 »

免费领取超大流量手机卡，每月29元包185G流量+100分钟通话, 中国电信官方发货

错误输出为：
type Exception reportmessagedescription The server encountered an internal error () that prevented it from fulfilling this request.exceptionjavax.servlet.ServletException: Servlet.init() for servlet Faces Servlet threw exception
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)root causejava.lang.NullPointerException
javax.faces.webapp.FacesServlet.init(FacesServlet.java:144)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)note The full stack trace of the root cause is available in the Apache Tomcat/5.5.20 logs.
首先，jsp1没有事件监听器，<h:commandButton value = "OK" action = "submit"/>
应该改为<h:commandButton value = "OK" action = ""#{typedName.okAction}"/>
然后，在TypedName类里面必须增加okAction事件，如：
public String okAction(){
   return "submit";//这里的返回值必须跟faces-config.xml的<from-outcome>submit</from-                   //outcome>一致
}建议你根据eclipse中jsf例子多练几遍。
我试了，按hornbilltofy兄的提示改过也不行呀，报同样的错误！这是《Apress Pro JSP2 4th edtion》第五章中第一个jsf例子的模仿，我试了试jsf-1_1_01.zip中自带的jsf例子jsf-cardemo.war以及《Apress Pro JSP2 4th edtion》附带的例子，错误也是一样的，郁闷中！tomcat5.5.20
jdk1.6.0_01
jsf-1_1_01
wtp-all-in-one-sdk-R-1.5.3崩溃崩溃
全加了
commons-beanutils.jar
commons-collections.jar
commons-digester.jar
commons-logging.jar
jsf-api.jar
jsf-impl.jar版本jsf-1_1_01
jstl的也加了
standard.jar
jstl.jar版本jakarta-taglibs-standard-1.1.2
eclipse有现成的例子,那个例子非常好,把那个例子试两遍.
上面的出错提示是告诉你代码运行出现了空值导致的,与jsf无关.
不行！现在发现这个例子在eclipse中的tomcat服务器中运行正常，但export到tomcat安装目录的webapp下一运行就报错，错误输出还是跟2楼一样，期待指点--||