java.lang.IllegalArgumentException: JSF中的非法视图ID

当我在tomcat中运行JSF项目时，它给了我如下错误:

java.lang.IllegalArgumentException: Illegal view ID .jsp/Welcome.jsp.  The ID must begin with /
    com.sun.faces.application.ViewHandlerImpl.getActionURL(ViewHandlerImpl.java:629)
    com.sun.facelets.FaceletViewHandler.getActionURL(FaceletViewHandler.java:781)
    com.sun.facelets.FaceletViewHandler.handleFaceletNotFound(FaceletViewHandler.java:686)
    com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:637)
    com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
    com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
    com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
    javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)

Faces-config.xml

<?xml version='1.0' encoding='UTF-8'?>
<faces-config 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-facesconfig_1_2.xsd"
    version="1.2">
    <application>
        <view-handler>com.sun.facelets.FaceletViewHandler</view-handler>
    </application></faces-config>

web . xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    version="2.5"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <context-param>
        <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
        <param-value>.jsp</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>*.jsf</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
    <listener>
        <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

<<p> index . jsp/strong>
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>Index</title> </head> <body> This is my Index page. <a href="jsp/Welcome.jsf"> <<< here</a> <br> </body> </html>
Welcome.jsp
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %> <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %> <html> <head> <title>Welcome</title> </head> <body> <f:view> Welcome Page. <br> </f:view> </body> </html>

您告诉JSF使用Facelets作为视图技术，但是您实际上使用jsp作为视图。这是行不通的。Facelets是JSP的继承者，您应该选择使用其中一个。

假设您只想使用jsp，那么您应该从faces-config.xml中删除 <view-handler>，也从web.xml中删除 javax.faces.DEFAULT_SUFFIX参数，最好还从web.xml中删除 ConfigureListener声明。

或者如果你实际上想要使用Facelets(推荐!)，那么你需要配置Facelets并按照Facelets开发指南将jsp重写为xhtml。

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