原因:在访问的URL要加入触发javax.faces.webapp.FacesServlet 的pattern
配置
1.faces-config.xml
<?xml version='1.0' encoding='UTF-8'?>
<!--
Copyright 2004 Sun Microsystems, Inc. All rights reserved.
SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
-->
<!DOCTYPE faces-config PUBLIC
"-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.0//EN"
"http://java.sun.com/dtd/web-facesconfig_1_0.dtd">
<!-- =========== FULL CONFIGURATION FILE ================================== -->
<faces-config>
<navigation-rule>
<from-view-id>/confirmChoices.jsp</from-view-id>
<navigation-case>
<description>
Any action that returns "carDetail" on confirmChoices.jsp should
cause navigation to carDetail.jsp
</description>
<from-outcome>index</from-outcome>
<to-view-id>/index.jsp</to-view-id>
</navigation-case>
</navigation-rule>
</faces-config>
2. web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>testjsf</display-name>
<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>
<taglib>
<taglib-uri>http://java.sun.com/jsf/core</taglib-uri>
<taglib-location>/WEB-INF/jsf_core.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://java.sun.com/jsf/html</taglib-uri>
<taglib-location>/WEB-INF/html_basic.tld</taglib-location>
</taglib>
</web-app>
3.index.jsp
<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<html>
<head>
<title>
JSF Test.
</title>
</head>
<body bgcolor="#008000">
<h1>
Hlsjlksfjslf:)</h1>
<f:view>
<h:commandButton id="aaa" value=":)">
</h:commandButton>
</f:view>
</body>
</html>
