JSP cannot resolve Servlet data object by using JSTL, IntelliJ IDE -

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i learning basics of mvc based on servlet , .jsp; when tried have simple test, intellij gave me warning on items="${}" of such:"this inspection reports possible el problems, such unresolved references , invalid el locations";

i checked servlet configuration in web.xml; checked path of .jsp file in root, doesn't work;

here's code:

--testview.jsp

<%@ page contenttype="text/html;charset=utf-8" language="java" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>  <html> <head>     <title>test view</title> </head> <body>     <c:foreach var="templist" items = "${mystringlist}">         ${templist} <br/>     </c:foreach> </body>

--testservlet.java

import javax.servlet.requestdispatcher; import javax.servlet.servletexception; import javax.servlet.annotation.webservlet; import javax.servlet.http.httpservlet; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse; import java.io.ioexception;  @webservlet(name = "testservlet") public class testservlet extends httpservlet { protected void dopost(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {  }  protected void doget(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {     string[] list = {"aaa","bbb","ccc","ddd","eee"};     request.setattribute("mystringlist", list);     requestdispatcher dispatcher = request.getrequestdispatcher("/testview.jsp");     dispatcher.forward(request,response);     } }

--web.xml

<?xml version="1.0" encoding="utf-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"          xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"          xsi:schemalocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"      version="3.1"> <servlet>     <servlet-name>testservlet</servlet-name>     <servlet-class>com.gpwz.labexcercise.testservlet</servlet-class>     </servlet>  <servlet-mapping>     <servlet-name>testservlet</servlet-name>     <url-pattern>/testservlet</url-pattern> </servlet-mapping>

any advice? searched lot, none of them can solve issue...


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