Q
qi_jianzhou
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<%@ page contentType="text/html"
%>
<%@ taglib perfix="c"
uri="http://java.sun.com/jsp/jstl/core"
%>
<html>
<head>
<title> jsp is easy</title>
</head>
<body>
<h1> jsp is easy </h1>
1+2+3 = <c
ut value="${1+2+3}"
/>
</body>
</html>
这个为什么不能呢,提示为
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: /t1.jsp(2,0) Taglib directive: Mandatory attribute prefix missing
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:200)
org.apache.jasper.compiler.JspUtil.checkAttributes(JspUtil.java:283)
org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:405)
org.apache.jasper.compiler.Node$TaglibDirective.accept(Node.java:612)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Validator.validate(Validator.java:1475)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:214)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:470)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
刚学这个,对它一点也不熟悉
很郁闷呀,如何使用 jsp 的标签库呀
这是很基础的,哪位帮帮忙呀
%>
<%@ taglib perfix="c"
uri="http://java.sun.com/jsp/jstl/core"
%>
<html>
<head>
<title> jsp is easy</title>
</head>
<body>
<h1> jsp is easy </h1>
1+2+3 = <c
ut value="${1+2+3}"/>
</body>
</html>
这个为什么不能呢,提示为
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: /t1.jsp(2,0) Taglib directive: Mandatory attribute prefix missing
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:200)
org.apache.jasper.compiler.JspUtil.checkAttributes(JspUtil.java:283)
org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:405)
org.apache.jasper.compiler.Node$TaglibDirective.accept(Node.java:612)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Validator.validate(Validator.java:1475)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:214)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:470)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
刚学这个,对它一点也不熟悉
很郁闷呀,如何使用 jsp 的标签库呀
这是很基础的,哪位帮帮忙呀
]