IDEA上关于 jstl的问题

在 IDEA上使用 maven创建 web骨架项目，在 pom文件中添加 jstl依赖

<dependency>
    <groupId>jstl</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>

此时，创建 jsp页面，并且使用 <c:forEach/>标签可能会报错如下：

org.apache.jasper.JasperException: /pages/product-list.jsp (line: [214], column: [28]) According to TLD or attribute directive in tag file, attribute [items] does not accept any expressions
    org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:41)
    org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:291)
    org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:114)
    org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:1242)
    org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:880)
    org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1545)
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2392)
    org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2444)
    org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2450)
    org.apache.jasper.compiler.Node$Root.accept(Node.java:471)
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2392)
    org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1854)
    org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:221)
    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)
    org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:171)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1373)
    org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1118)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1057)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)

解决措施：

在 structure中的lib包下添加 jstl的 jar包

尽管有 maven的依赖，idea也不会自动添加，需要用户手动添加