IntelliJ and JSP/JSTL cannot resolve taglib for JSTL in tomcat7

If you are using maven, add following code in pom.xml inside the <dependencies></dependencies> tag

<!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>

First add this to the top of your .jsp file:

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

It will still give syntax error but you can fix that by adding javax.servlet:jstl:1.2 as a module dependency. To do that, follow these steps:

1. Click your project name and press F4 to bring up the module settings dialog.
2. Then go to the dependencies tab in the modules section.
3. Click the green + icon → library → From Maven.
4. Search for javax.servlet:jstl:1.2 in the search bar and press OK and it will download and add the above mentioned library as a module.
5. Now you should not have any kind of syntax error.