缺少jstl包引起的异常

项目部署成功，但访问页面时报以下异常：

org.apache.jasper.JasperException: /webpage/login/login.jsp(2,0) 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:40)
	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:88)
	org.apache.jasper.compiler.Parser.processIncludeDirective(Parser.java:300)
	org.apache.jasper.compiler.Parser.parseIncludeDirective(Parser.java:333)
	org.apache.jasper.compiler.Parser.parseDirective(Parser.java:442)
	org.apache.jasper.compiler.Parser.parseElements(Parser.java:1400)
	org.apache.jasper.compiler.Parser.parse(Parser.java:130)
	org.apache.jasper.compiler.ParserController.doParse(ParserController.java:255)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:103)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:185)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:334)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:321)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
	org.jeecgframework.core.aop.GZipFilter.doFilter(GZipFilter.java:51)
	com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:140)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

经检查是由于工程的WEB-INF/lib/目录下缺少jstl这个jar包，因为我是用maven，所以在pom.xm文件中增加以下配置，重新打包即可：

<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>