我的idea出现这种状况怎么解决（点击运行可以打开tomcat官网，但是输入自己的地址就显示错误）

HTTP Status 500 – Internal Server Error

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 unexpected condition that prevented it from fulfilling the 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:55)
	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:293)
	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:80)
	org.apache.jasper.compiler.TagLibraryInfoImpl.generateTldResourcePath(TagLibraryInfoImpl.java:251)
	org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:122)
	org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:434)
	org.apache.jasper.compiler.Parser.parseDirective(Parser.java:492)
	org.apache.jasper.compiler.Parser.parseElements(Parser.java:1448)
	org.apache.jasper.compiler.Parser.parse(Parser.java:145)
	org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:105)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:203)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:374)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:351)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:335)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:595)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

Note The full stack trace of the root cause is available in the server logs.

解决办法

（1）将jstl.jar有关maven配置放入到pom.xml

（2）jstl.jar存在，需要重新编译项目