Added JSTL (https://www.tutorialspoint.com/jsp/jsp_standard_tag_library.htm)

pom.xml

@@ -17,6 +17,11 @@
 
   <dependencies>
     <dependency>
+      <groupId>javax.servlet</groupId>
+      <artifactId>jstl</artifactId>
+      <version>1.2</version>
+    </dependency>
+    <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-webmvc</artifactId>
       <version>5.3.6</version>

src/main/java/cc/javastudio/config/WebConfig.java

@@ -8,6 +8,7 @@ import org.springframework.web.servlet.config.annotation.DefaultServletHandlerCo
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 import org.springframework.web.servlet.view.InternalResourceViewResolver;
+import org.springframework.web.servlet.view.JstlView;
 
 @Configuration
 @EnableWebMvc
@@ -17,6 +18,7 @@ public class WebConfig implements WebMvcConfigurer {
 	@Bean
 	public ViewResolver initViewResolver() {
 		InternalResourceViewResolver resolver = new InternalResourceViewResolver();
+		resolver.setViewClass(JstlView.class);
 		resolver.setPrefix("/WEB-INF/view/");
 		resolver.setSuffix(".jsp");
 		return resolver;