这是我得到的错误日志
org.apache.jasper.JasperException: /pages/inputname.jsp (line: 3, column: 50) Attribute qualified names must be unique within an element
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:41)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:88)
org.apache.jasper.compiler.Parser.parseAttributes(Parser.java:171)
org.apache.jasper.compiler.Parser.parseAttributes(Parser.java:153)
org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1236)
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1450)
org.apache.jasper.compiler.Parser.parse(Parser.java:138)
org.apache.jasper.compiler.ParserController.doParse(ParserController.java:239)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:102)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:197)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:372)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:352)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:339)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:594)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:344)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:410)
com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:469)
com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:140)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:745)
org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:716)
org.apache.jsp.index_jsp._jspService(index_jsp.java:60)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
JSP 页面的代码是
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<f:loadBundle var="test.bundle.messages" var="msg"/>
<html>
<head>
<title>enter your name page</title>
</head>
<body>
<f:view>
<h1>
<h:outputText value="#{msg.inputname_header}"/>
</h1>
<h:form id="helloForm">
<h:outputText value="#{msg.prompt}"/>
<h:inputText value="#{personBean.personName}" />
<h:commandButton action="greeting" value="#{msg.button_text}" />
</h:form>
</f:view>
</body>
</html>
对于消息属性文件，它是
inputname_header=JSF KickStart
prompt=Tell us your name:
greeting_text=Welcome to JSF
button_text=Say Hello
sign=!
这里出了什么问题？
错误包含行号和字符位置：
/pages/inputname.jsp （行： 3， 列： 50）
就是这样
<f:loadBundle var="test.bundle.messages" var="msg"/>
-------------------------------------------------^
错误消息显示：
属性限定名称在元素中必须是唯一的
再看一遍，你已经声明了两次var属性。第一个应该是basename.相应地修复它：
<f:loadBundle basename="test.bundle.messages" var="msg"/>
与具体问题无关，自2.5年前JSF已经升级到JSF 2.0，JSP已被Facelets取代。我强烈建议您更新您的课程/学习材料/书籍/教程。它们已经过时了。