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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
This commit is contained in:
ramansahasi 2017-06-13 20:43:16 +05:30 committed by maibin
parent 74aa2c9ec9
commit 69b4a05eb8
8 changed files with 60 additions and 58 deletions
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4
spring-boot/src/main/java/com/baeldung/displayallbeans/Application.java
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@ -11,6 +11,10 @@ public class Application {
public static void main(String[] args) { public static void main(String[] args) {
applicationContext = SpringApplication.run(Application.class, args); applicationContext = SpringApplication.run(Application.class, args);
displayAllBeans();
}
public static void displayAllBeans() {
String[] allBeanNames = applicationContext.getBeanDefinitionNames(); String[] allBeanNames = applicationContext.getBeanDefinitionNames();
for(String beanName : allBeanNames) { for(String beanName : allBeanNames) {
System.out.println(beanName); System.out.println(beanName);

19
spring-boot/src/main/java/com/baeldung/displayallbeans/SpringConfig.java
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@ -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;
}
}

22
spring-boot/src/main/java/com/baeldung/displayallbeans/controller/FooController.java Normal file
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@ -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";
}
}

19
spring-boot/src/main/java/com/baeldung/displayallbeans/controller/PersonController.java
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@ -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;
}
}

13
spring-boot/src/main/java/com/baeldung/displayallbeans/model/Person.java
View File

@ -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;
}
}

18
spring-boot/src/main/java/com/baeldung/displayallbeans/service/FooService.java Normal file
View File

@ -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.";
}
}

10
spring-boot/src/main/resources/templates/displayallbeans.html Normal file
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@ -0,0 +1,10 @@
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Baeldung</title>
</head>
<body>
<h2 th:text="${header}"></h2>
<p th:text="${message}"></p>
</body>
</html>

13
spring-boot/src/test/java/com/baeldung/displayallbeans/DisplayBeanIntegrationTest.java
View File

@ -44,9 +44,8 @@ public class DisplayBeanIntegrationTest {
@Test @Test
public void givenRestTemplate_whenAccessServerUrl_thenHttpStatusOK() throws Exception { public void givenRestTemplate_whenAccessServerUrl_thenHttpStatusOK() throws Exception {
@SuppressWarnings("rawtypes") ResponseEntity<String> entity = this.testRestTemplate.getForEntity(
ResponseEntity<Map> entity = this.testRestTemplate.getForEntity( "http://localhost:" + this.port + "/displayallbeans", String.class);
"http://localhost:" + this.port + "/getPerson", Map.class);
then(entity.getStatusCode()).isEqualTo(HttpStatus.OK); then(entity.getStatusCode()).isEqualTo(HttpStatus.OK);
} }
@ -69,8 +68,8 @@ public class DisplayBeanIntegrationTest {
List<Map<String, Object>> allBeans = (List) ((Map) entity.getBody().get(0)).get("beans"); List<Map<String, Object>> allBeans = (List) ((Map) entity.getBody().get(0)).get("beans");
List<String> beanNamesList = allBeans.stream().map(x -> (String) x.get("bean")).collect(Collectors.toList()); List<String> beanNamesList = allBeans.stream().map(x -> (String) x.get("bean")).collect(Collectors.toList());
assertThat( beanNamesList, hasItem("personController")); assertThat( beanNamesList, hasItem("fooController"));
assertThat( beanNamesList, hasItem("person")); assertThat( beanNamesList, hasItem("fooService"));
} }
@Test @Test
@ -78,7 +77,7 @@ public class DisplayBeanIntegrationTest {
String[] beanNames = context.getBeanDefinitionNames(); String[] beanNames = context.getBeanDefinitionNames();
List<String> beanNamesList = Arrays.asList(beanNames); List<String> beanNamesList = Arrays.asList(beanNames);
assertTrue(beanNamesList.contains("personController")); assertTrue(beanNamesList.contains("fooController"));
assertTrue(beanNamesList.contains("person")); assertTrue(beanNamesList.contains("fooService"));
} }
} }