HTTP Status 500 - The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either w

HTTP Status 500 - The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

type Exception report

message The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application
	org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:56)
	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:278)
	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:76)
	org.apache.jasper.compiler.TagLibraryInfoImpl.generateTldResourcePath(TagLibraryInfoImpl.java:242)
	org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:124)
	org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:411)
	org.apache.jasper.compiler.Parser.parseDirective(Parser.java:469)
	org.apache.jasper.compiler.Parser.parseElements(Parser.java:1428)
	org.apache.jasper.compiler.Parser.parse(Parser.java:139)
	org.apache.jasper.compiler.ParserController.doParse(ParserController.java:227)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:356)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:405)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:349)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

note The full stack trace of the root cause is available in the Apache Tomcat/8.0.9 logs.

---

Apache Tomcat/8.0.9

JSP的源码如下所示：

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>







	<%
		String userName = "xxx";
		pageContext.setAttribute("userName", userName);	//放置在作用域中
	%>
	

在浏览器访问时出现刚开始的错误。

错误提示应该是标签库的uri即没有在web.xml中定义，也没有在任何jar包中出现。

这是因为在tomcat服务器中没有找到jstl的jar包，将jstl-1.2.jar和standard-1.1.2.jar放置到tomcat的lib文件夹下：E:\SSH\apache-tomcat-8.0.9\lib