I have one framework using Spring Boot which contains a controller RestController class ,
#RequestMapping("/details")
#RestController
public class DataController {
private KafkaStreams kafkaStreams;
public DataController(KafkaStreams kafkaStreams) {
this.kafkaStreams = kafkaStreams;
}
#Autowired
DataService dataService;
#RequestMapping(value = "getAllDetails", method = RequestMethod.GET)
public boolean getAllDetails(KafkaStreams kafkaStreams) {
return ktableService.getAllDetails(kafkaStreams);
}
}
In my service implementation class I am using this kafkaStreams object to find the details for my different services.
Now I am using this framework as a dependency in my one of the other application where I have a runner class,
import org.apache.kafka.streams.KafkaStreams;
#Component
public class PipelineRunner {
private final StreamsBuilder streamsBuilder;
private final KafkaProperties kafkaProperties;
private final SerdesExt serdesExt;
#Autowired
public PipelineRunner(StreamsBuilder streamsBuilder, KafkaProperties kafkaProperties, SerdesExt serdesExt) {
this.streamsBuilder = streamsBuilder;
this.kafkaProperties = kafkaProperties;
this.serdesExt = serdesExt;
}
#PostConstruct
public void run() {
ReflectData.AllowNull.get().addStringable(Utf8.class);
ReflectData.get().addStringable(Utf8.class);
DataProcessor processor = new DataProcessor(streamsBuilder, kafkaProperties,
serdesExt);
start();
}
private void start() {
KafkaStreams kafkaStreams = new KafkaStreams(streamsBuilder.build(),
kafkaProperties.getKafkaStreamsProperties(serdesExt));
System.out.println("----Its is started----");
DataController controller = new DataController(kafkaStreams);
kafkaStreams.start();
}
}
In this class i am trying to create the object for DataController .
So when I am trying to run the application class,
#SpringBootApplication(scanBasePackages = { "framework package" })
#EnableConfigurationProperties(KafkaProperties.class)
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
I am getting this error,
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of constructor in frameworkpackage.controllers.DataController required a bean of type 'org.apache.kafka.streams.KafkaStreams' that could not be found.
Action:
Consider defining a bean of type 'org.apache.kafka.streams.KafkaStreams' in your configuration.
I am new to Spring Boot. So I might be doing something wrong here. If more info is needed I can provide.
UPDATE
My pom file,
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
</parent>
<properties>
<confluent.version>4.1.0</confluent.version>
<kafka.version>1.1.0</kafka.version>
<lombok.version>1.18.0</lombok.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>io.confluent</groupId>
<artifactId>kafka-avro-serializer</artifactId>
<version>${confluent.version}</version>
</dependency>
<dependency>
<groupId>io.confluent</groupId>
<artifactId>kafka-streams-avro-serde</artifactId>
<version>${confluent.version}</version>
</dependency>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-streams</artifactId>
<version>${kafka.version}</version>
</dependency>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>${kafka.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-avro</artifactId>
<version>2.8.5</version>
</dependency>
</dependencies>
A problem is that you are trying to use a bean kafkaStreams in your class DataController, but there is no bean with this name in Spring context. You need to create it manually, so you can autowire it later.
In your case I would suggest to update PipelineRunner.java like this:
import javax.annotation.PostConstruct;
import org.apache.kafka.streams.KafkaStreams;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
#Component
public class PipelineRunner
{
private final StreamsBuilder streamsBuilder;
private final KafkaProperties kafkaProperties;
private final SerdesExt serdesExt;
#Autowired
public PipelineRunner(StreamsBuilder streamsBuilder, KafkaProperties kafkaProperties, SerdesExt serdesExt)
{
this.streamsBuilder = streamsBuilder;
this.kafkaProperties = kafkaProperties;
this.serdesExt = serdesExt;
}
#PostConstruct
public void run()
{
ReflectData.AllowNull.get().addStringable(Utf8.class);
ReflectData.get().addStringable(Utf8.class);
DataProcessor processor = new DataProcessor(streamsBuilder, kafkaProperties,
serdesExt);
start();
}
#Bean
KafkaStreams kafkaStreams()
{
KafkaStreams kafkaStreams = new KafkaStreams(
streamsBuilder.build(),
kafkaProperties.getKafkaStreamsProperties(serdesExt));
System.out.println("----Its is started----");
kafkaStreams.start();
return kafkaStreams;
}
}
You dont need to create an instance of DataController by yourself, this will be done automatically by Spring.
More information about Spring approach to beans is available there
Related
I am trying to use a MongoRepository, but Spring complains, that no instance of the MonoRepository-Interface is in the context.
#SpringBootApplication
public class BackendApplication {
public static void main(String[] args) {
SpringApplication.run(BackendApplication.class, args);
}
}
#Document(collection = "tableItems")
class TableItem {
#Id
public String id;
public int roundNbr;
}
interface TableItemsRepository extends MongoRepository<TableItem, String> {
}
#Service
class TableItemsService {
#Autowired
public TableItemsService(TableItemsRepository tableItemsRepository) {
}
}
The server complains:
Parameter 0 of constructor in backend.TableItemsService required a bean of type 'backend.TableItemsRepository' that could not be found.
Action:
Consider defining a bean of type 'backend.TableItemsRepository' in your configuration.
my maven pom.xml:
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>3.4.0</version>
</dependency>
How can I get a bean instance of my MongoRepository?
The dependency is incorrect.
spring-data-mongodb only makes it compile:
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>3.4.0</version>
</dependency>
But you need additional dependencies, to make it run. For convenience you can import spring-boot-starter-data-mongodb, which will import all required artifacts as transitive dependencies:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
I am setting up a new Spring project for some fun learning/tutorial at home and I seem to run into a fairly common issue but I have tried all possible solutions I found on here but with no luck. Basically what I have is as follows:
Controller class:
#RestController
#RequestMapping(value = "/shop")
public class ShopController {
#Autowired
ShopService shopService;
#GetMapping(value = "/{id}")
public #ResponseBody Shop getTestData(#PathVariable String id) {
return shopService.getShopBasedOnId(id);
}
}
Service class:
#Service
public class ShopService {
#Autowired
private ShopRepository shopRepository;
public ShopService(ShopRepository shopRepository){
this.shopRepository = shopRepository;
}
public Shop getShopBasedOnId(String id) {
return shopRepository.findByShopId(id);
}
}
Repository class:
#Repository
public interface ShopRepository extends PagingAndSortingRepository<Shop, String> {
Shop findByShopId(String shopId);
}
Application class:
#SpringBootApplication
#EnableJpaRepositories("com.example.reservations.repository")
public class ReservationsApplication {
public static void main(String[] args) {
SpringApplication.run(ReservationsApplication.class, args);
}
}
Last but not least my pom.xml with the dependencies:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-couchbase</artifactId>
<version>4.0.1.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>2.3.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
<version>1.0.2.Final</version>
</dependency>
So the error code I am getting is as follows:
Description:
Parameter 0 of constructor in com.example.reservations.services.ShopService required a bean of type 'com.example.reservations.repository.ShopRepository' that could not be found.
The injection point has the following annotations:
- #org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean of type 'com.example.reservations.repository.ShopRepository' in your configuration.
My structure of folders is:
main
|_java
|_com.example.reservations
|_controllers
|_ShopController.java
|_repository
|_ShopRepository.java
|_services
|_ShopService.java
|_ReservationsApplication.java
Turns out I had to have a config file for couchbase repository. What I did was follow the following link and now it all compiles fine!
The problem could be #Autowired in ShopService
#Service
public class ShopService {
#Autowired
private ShopRepository shopRepository;
public ShopService(ShopRepository shopRepository){
this.shopRepository = shopRepository;
}
public Shop getShopBasedOnId(String id) {
return shopRepository.findByShopId(id);
}
}`
should be
#Service
public class ShopService {
private ShopRepository shopRepository;
public ShopService(ShopRepository shopRepository){
this.shopRepository = shopRepository;
}
public Shop getShopBasedOnId(String id) {
return shopRepository.findByShopId(id);
}
}
You can also add #Autowired just above the constructor but it is no longer required if there is only one constructor
In my situation, I had spring boot with multiple modules. So I had to the below to make it work.
#SpringBootApplication (scanBasePackages={"com.sample.test"})
#EnableJdbcRepositories(basePackages={"com.sample.test"})
public class TestApplication {
public static void main(String[] args) {
SpringApplication.run(TestApplication.class, args);
}
}
I have the following problem. I trying to start a Spring Boot application with the DB2 database with Hybernate. So i created a repository and used the #Autowired annotation to get some data from the DB. The problem is that when I run the application i receive the following error:
***************************
APPLICATION FAILED TO START
***************************
Description:
Field studenteRepository in com.ibm.snam.ai4legal.controller.HelloWorldController required a bean of type 'com.ibm.snam.ai4legal.repositories.StudenteRepository' that could not be found.
Action:
Consider defining a bean of type 'com.ibm.snam.ai4legal.repositories.StudenteRepository' in your configuration.
Here are the classes of the application
Application class:
package com.ibm.snam.ai4legal.application;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication(scanBasePackages = {"com.ibm"})
public class SBApplication {
public static void main(String[] args) {
SpringApplication.run(SBApplication.class, args);
}
}
Repository class:
package com.ibm.snam.ai4legal.repositories;
import org.springframework.data.repository.CrudRepository;
import com.ibm.snam.ai4legal.model.Studente;
public interface StudenteRepository extends CrudRepository<Studente, Integer>{
}
Model class:
package com.ibm.snam.ai4legal.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
#Entity
public class Studente{
#Id
#GeneratedValue
private int id;
private String nome;
private String cognome;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getnome() {
return nome;
}
public void setnome(String nome) {
this.nome = nome;
}
public String getcognome() {
return cognome;
}
public void setcognome(String cognome) {
this.cognome = cognome;
}
}
Controller class:
package com.ibm.snam.ai4legal.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;
import com.ibm.snam.ai4legal.repositories.StudenteRepository;
#RestController
public class HelloWorldController {
#Autowired
StudenteRepository studenteRepository;
#GetMapping(value = "/home")
public ModelAndView helloworld() {
ModelAndView hello = new ModelAndView("helloworld");
return hello;
}
}
and here the pom.xml file
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>projects</groupId>
<artifactId>springwebapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<java.version>1.8</java.version>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>com.ibm.db2.jcc</groupId>
<artifactId>db2jcc4</artifactId>
<version>4.26.14</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.6.1</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.6.1</version>
</dependency>
</dependencies>
<!-- <dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>-->
<repositories>
<repository>
<id>repo</id>
<url>file://${project.basedir}/lib</url>
</repository>
</repositories>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<packaging>war</packaging>
</project>
On the internet I found that I should insert <context:annotation-config/> in some configuration file but I have no idea in which file I have to put it. Someone can help?
You have to use #ComponentScan annotation. Try the below code.
#ComponentScan({"com.ibm.*"})
#SpringBootApplication
public class SBApplication {
public static void main(String[] args) {
SpringApplication.run(SBApplication.class, args);
}
}
Also mention #Repository annotation in StudenteRepository class.
Either move SBApplication to com.ibm.snam.ai4legal package so it can benefit from default component scanning or add the following annotations to specify packages to be scanned for entities and repositories.
#SpringBootApplication(scanBasePackages = {"com.ibm"})
#EnableJpaRepositories(basePackages = {"com.ibm"})
#EntityScan(basePackages = {"com.ibm"})
public class SBApplication {
public static void main(String[] args) {
SpringApplication.run(SBApplication.class, args);
}
}
Since you are using spring-boot-starter-data-jpa you need to provide the annotation #EnableJpaRepositories to tell springboot to autoconfigure everything.So you might want to use the auto configuration feature of springboot.The #EnableJpaRepositories annotation is not mandatory for auto configuring the spring-data-jpa but in some cases if spring component scan didn't recognize spring-data-jpa in classpath you will have to use this annotation to tell spring to autoconfigure it.
#EnableJpaRepositories will enabling auto configuration support for Spring Data JPA required to know the path of the JPA the repositories. By default, it will scan only the main application package and its sub packages for detecting the JPA repositories.So take care to put the main application class at the root package of your application.
#EnableJpaRepositories(basePackages ="com.ibm")
#SpringBootApplication(scanBasePackages = {"com.ibm"})
public class SBApplication {
public static void main(String[] args) {
SpringApplication.run(SBApplication.class, args);
}
}
Also, if your entity classes are not in the same package then you can use the #EntityScan annotation to specify the base packages. In your case you have not specifies the #Repository annotation on your interface which will tell spring-boot to create default implementations for your interface.If that annotation is not provided then spring will just ignore the interface and the bean creation will not happen.You won't be able to autowire it .So provide that and have methods declared in your interface and spring-bot will take care of the rest.
#Repository
public interface StudenteRepository extends CrudRepository<Studente, Integer>{
//If to find a student record by the id attribute
public Studente findById();
}
I downgrade my application from spring 4.x to 3.x and now when I fire simple test in spock which using autowired bean, this bean is null.
#ContextConfiguration(classes = Configuration.class)
class SomeTestClass extends Specification {
#Autowired
SomeService someService
def "someService"(){
expect:
someService.returnHelloWorld() == "Hello World" // (<- NullPointer)
}
}
My pom.xml file:
<dependencies>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.2.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>3.2.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<version>2.4.12</version>
</dependency>
<dependency>
<groupId>org.spockframework</groupId>
<artifactId>spock-core</artifactId>
<version>1.1-groovy-2.4</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.spockframework</groupId>
<artifactId>spock-spring</artifactId>
<version>1.1-groovy-2.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>3.2.1.RELEASE</version>
<scope>test</scope>
</dependency>
</dependencies>
After when I downgrade also spock-core/spring to 0.6-groovy-1.8 and groovy-all to 1.8 and fire my test it throws this exception:
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'someAnotherBean' defined in file
../SomeBean.class: Instantiation of bean failed; nested exception
isorg.springframework.beans.BeanInstantiationException: Could
notinstantiate bean class [..SomeBean.class]: No default
constructorfound; nested exception is
java.lang.NoSuchMethodException:..SomeBean.()
This bean contains contructor which i used to intizialize final fieds in class:
#Component
#PropertySource("classpath:someproperties.properties")
public class HeaderFactory {
private final SomeObject someObject;
public HeaderFactory(#Value("${someProperty1}") String someProperty1, #Value("${someProperty2}") String someProperty2) {
SomeObject someObject = new SomeObject(someProperty1,someProperty2);
this.someObject = someObject;
}
}
Everything worked pretty well before I dowgraded spring version. Any ideas?
You could create a configuration class and define the problematic beans there:
#Configuration
class MyConfig {
#Value("${someProperty1}") String prop1;
#Value("${someProperty2}") String prop2
#Bean
public SomeBean someBean() {
SomeBean bean = new SomeBean(prop1, prop2);
return bean;
}
}
Documentation here: https://docs.spring.io/spring/docs/3.2.0.RELEASE/spring-framework-reference/html/new-in-3.0.html#new-feature-java-config
I resolved my issue by this way:
#Component
public class UrlBuilder {
private final String host;
private final String port;
private final String protocol;
#Autowired
public UrlBuilder(Environment env) {
this.protocol = env.getRequiredProperty("app.server.protocol").toLowercase();
this.serverHost = env.getRequiredProperty("app.server.host");
this.serverPort = env.getRequiredProperty("app.server.port", Integer.class);
}
}
Source
I am new to the concept of unit testing with Spring controllers. I'm following some examples I found online and trying to implement their testing strategy. This is my basic controller:
#Controller
public class GreetingController {
#RequestMapping("/greeting")
public String greeting(#RequestParam(value = "name2", required = false, defaultValue = "World2") String name2,
Model model) {
model.addAttribute("name", name2);
return "greeting";
}
}
This is my unit test:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration
#WebAppConfiguration
public class ControllerGreetingTest {
private MockMvc mockMvc;
#Autowired
GreetingController greetingController;
#Test
public void shouldReturnSomething() throws Exception {
mockMvc.perform(get("/greeting"))
.andExpect(status().isOk())
.andExpect(view().name("greeting"));
}
}
Seems pretty straight forward but I get the following error:
java.lang.IllegalStateException: Neither GenericXmlWebContextLoader
nor AnnotationConfigWebContextLoader was able to detect defaults, and
no ApplicationContextInitializers were declared for context
configuration [ContextConfigurationAttributes#1698539 declaringClass =
'com.practice.demo.ControllerGreetingTest', locations = '{}', classes
= '{}', inheritLocations = true, initializers = '{}', inheritInitializers = true, name = [null], contextLoaderClass =
'org.springframework.test.context.ContextLoader']
I'm assuming I have to add a parameter to the #ContextConfiguration annotation but not sure what to include in there.
EDIT = This is what I have so far:
public class ControllerGreetingTest {
private MockMvc mockMvc;
#Before
public void setup(){
this.mockMvc = standaloneSetup(new GreetingController()).build();
}
#Test
public void shouldReturnDefaultString() throws Exception {
mockMvc.perform(get("/greeting"))
.andExpect(status().isOk())
.andExpect(view().name("greetings"))
.andExpect(model().attribute("name","World2"));
}
}
It does the job but it doesn't use any of the Spring annotations like I tried to do before.. this approach is not good so trying to figure out why I keep gettings errors whenever I include the annotations in my test file.
My POM:
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>1.5.7.RELEASE</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-all</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<artifactId>hamcrest-core</artifactId>
<groupId>org.hamcrest</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>1.9.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>3.2.3.RELEASE</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mongodb/mongo-java-driver -->
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
<version>3.4.2</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>1.5.7.RELEASE</version>
<scope>test</scope>
</dependency>
</dependencies>
You should use spring-boot-starter-test dependency. It has almost everything for testing.
And for testing controller part of a spring application, you should use #WebMvcTest annotation for your test class. With this annotation spring will load context just for controller part. Plus you don't need to setup method if you use this annotation. You can simply autowire mockMvc. Your test class should be like this:
#RunWith(SpringRunner.class)
#WebMvcTest(GreetingController.class)
public class ControllerGreetingTest {
#Autowired
private MockMvc mockMvc;
#MockBean
private SomeServiceClass someServiceClass;
#Test
public void shouldReturnDefaultString() throws Exception {
mockMvc.perform(get("/greeting"))
.andExpect(status().isOk())
.andExpect(view().name("greetings"))
.andExpect(model().attribute("name","World2"));
}
}
Note: Your controller does not have any autowired fields. In cases that controller has some autowired objects like service or repository objects. you can simply mock them with annotation #MockBean as you can see above code.
See this link for other test slice annotations spring provided
For projects with org.springframework.boot:spring-boot-starter-test can use
#RunWith(SpringRunner.class)
#SpringBootTest(classes = App.class)
public class ControllerGreetingTest {
...
}
Where App.class is you main application class annotated with #SpringBootApplication. But you better read the documentation. And if you don't want to include (classes = App.class) part you also can change folder structure
For simple controllers it is possible to perform simple standalone tests
#RunWith(SpringRunner.class)
#WebMvcTest(controllers = ControllerGreeting.class)
public class ControllerGreetingTest {
#Autowired
private MockMvc mockMvc;
...
}
Just add the #ContextConfiguration annotation and refer one or more XML configuration file locations or one or more configuration classes. Otherwise Spring cannot autowire your controller, which should be tested.
Example: You want to test a controller, which uses MyService via #Autowired:
MyControllerTest: Injects the controller, which should be tested using the MyTestConfig configuration class.
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(classes = {MyTestConfig.class})
#WebAppConfiguration
public class MyControllerTest {
private MockMvc mockMvc;
#Autowired
private MyController controller;
#Before
public void setUp() {
mockMvc = MockMvcBuilders.standaloneSetup(controller).build();
}
// Tests
}
MyTestConfig: Returns all beans, which are required for the test. Use Mockito to mock the depedencies of your controller, because we want to test only the controller and not the service layer.
#Configuration
public class MyTestConfig {
#Bean
public MyService myService() {
return Mockito.mock(MyService.class);
}
#Bean
public MyController myController() {
return new MyController();
}
}