BAEL-859 (updated) How to display/list all Spring-managed beans? (#2064)

* Separating displayAllBeans logic from main method

* Removing as 'Person' bean is no longer used

* Removing as 'Person' bean is no longer used

* Removing as 'Person' bean is no longer used

* Added FooService and FooController

* Changed test cases as per new configuration

* Template to handle front-end view

* Fixed spacing issue

* Fixed spaces

* Fixed spacing issue

spring-boot/src/main/java/com/baeldung/displayallbeans/Application.java

@@ -11,6 +11,10 @@ public class Application {
     public static void main(String[] args) {
         applicationContext = SpringApplication.run(Application.class, args);
         
+        displayAllBeans();
+    }
+    
+    public static void displayAllBeans() {
         String[] allBeanNames = applicationContext.getBeanDefinitionNames();
         for(String beanName : allBeanNames) {
             System.out.println(beanName);

spring-boot/src/main/java/com/baeldung/displayallbeans/SpringConfig.java

@@ -1,19 +0,0 @@
-package com.baeldung.displayallbeans;
-
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.ComponentScan;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.web.servlet.config.annotation.EnableWebMvc;
-
-import com.baeldung.displayallbeans.model.Person;
-
-@Configuration
-@ComponentScan(basePackages = "com.baeldung.displayallbeans")
-public class SpringConfig {
-    @Bean
-    public Person person() {
-        Person person = new Person();
-        person.setName("Jon Doe");
-        return person;
-    }
-}

spring-boot/src/main/java/com/baeldung/displayallbeans/controller/FooController.java

@@ -0,0 +1,22 @@
+package com.baeldung.displayallbeans.controller;
+
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import com.baeldung.displayallbeans.service.FooService;
+
+@Controller
+public class FooController {
+    @Autowired
+    private FooService fooService;
+    
+    @RequestMapping(value="/displayallbeans") 
+    public String getHeaderAndBody (Map<String, Object> model){
+        model.put("header", fooService.getHeader());
+        model.put("message", fooService.getBody());
+        return "displayallbeans";
+    }
+}

spring-boot/src/main/java/com/baeldung/displayallbeans/controller/PersonController.java

@@ -1,19 +0,0 @@
-package com.baeldung.displayallbeans.controller;
-
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Controller;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.ResponseBody;
-
-import com.baeldung.displayallbeans.model.Person;
-
-@Controller
-public class PersonController {
-    @Autowired
-    Person person;
-    
-    @RequestMapping("/getPerson")
-    public @ResponseBody Person getPerson() {
-        return person;
-    }
-}

spring-boot/src/main/java/com/baeldung/displayallbeans/model/Person.java

@@ -1,13 +0,0 @@
-package com.baeldung.displayallbeans.model;
-
-public class Person {
-    String name;
-    
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-}

spring-boot/src/main/java/com/baeldung/displayallbeans/service/FooService.java

@@ -0,0 +1,18 @@
+package com.baeldung.displayallbeans.service;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class FooService {
+    
+    public String getHeader() {
+        return "Display All Beans";
+    }
+    
+    public String getBody() {
+        return "This is a sample application that displays all beans "
+          + "in Spring IoC container using ListableBeanFactory interface "
+          + "and Spring Boot Actuators.";
+    }
+    
+}