在NetBeans上运行JSF HelloWorld程序会引发java.lang.IllegalStateException
我甚至在NetBeans 8.1上运行预定义的HelloWorld Java Server Faces（JSF）项目时都遇到问题。我不知道从哪里开始调查这个问题。代码中不应该有错误，因为它是一个HelloWorld程序，我没有添加任何内容。我应该重新配置NetBeans吗 这是web.xml文件在NetBeans上运行JSF HelloWorld程序会引发java.lang.IllegalStateException,java,jsf,netbeans,Java,Jsf,Netbeans,我甚至在NetBeans 8.1上运行预定义的HelloWorld Java Server Faces（JSF）项目时都遇到问题。我不知道从哪里开始调查这个问题。代码中不应该有错误，因为它是一个HelloWorld程序，我没有添加任何内容。我应该重新配置NetBeans吗 这是web.xml文件 <?xml version="1.0" encoding="UTF-8"?> <web-app version="3.1" xmlns="http://xmlns.jcp.or
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</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>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>faces/index.xhtml</welcome-file>
</welcome-file-list>
</web-app>
javax.faces.PROJECT_阶段
发展
Facesservlet
javax.faces.webapp.FacesServlet
1.
Facesservlet
/面孔/*
30
faces/index.xhtml
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
Hello from Facelets
</h:body>
</html>
Facelet标题
Facelets的你好