Implement a functional logout for spring-boot-keycloak

spring-boot-modules/spring-boot-keycloak/src/main/java/com/baeldung/keycloak/WebController.java

@@ -8,6 +8,8 @@ import java.security.Principal;
 
 import org.springframework.beans.factory.annotation.Autowired;
 
+import javax.servlet.http.HttpServletRequest;
+
 @Controller
 public class WebController {
 
@@ -19,6 +21,12 @@ public class WebController {
         return "external";
     }
 
+    @GetMapping("/logout")
+    public String logout(HttpServletRequest request) throws Exception {
+        request.logout();
+        return "redirect:/";
+    }
+
     @GetMapping(path = "/customers")
     public String customers(Principal principal, Model model) {
         addCustomers();

spring-boot-modules/spring-boot-keycloak/src/main/resources/templates/customers.html

@@ -27,6 +27,7 @@
 		</table>
 		<div id="pagefoot" th:include="layout :: footerFragment">Footer
 		</div>
+		<a href="/logout">Logout</a>
 	</div>
 	<!-- container -->
 </body>