CODEWITHSUNDEEP
javaspringspring-bootspring-dataspring-data-jpa
kittu
kittu

Reputation: 7018

Consider defining a bean of type 'service' in your configuration [Spring boot]

I get error when I run the main class.

Error:

Action:
Consider defining a bean of type 'seconds47.service.TopicService' in your configuration.

Description:
Field topicService in seconds47.restAPI.topics required a bean of type 'seconds47.service.TopicService' that could not be found

TopicService interface:

public interface TopicService {

    TopicBean findById(long id);

    TopicBean findByName(String name);

    void saveTopic(TopicBean topicBean);

    void updateTopic(TopicBean topicBean);

    void deleteTopicById(long id);

    List<TopicBean> findAllTopics(); 

    void deleteAllTopics();

    public boolean isTopicExist(TopicBean topicBean);
}

controller:

@RestController
public class topics {

    @Autowired
    private TopicService topicService;

    @RequestMapping(path = "/new_topic2", method = RequestMethod.GET)
    public void new_topic() throws Exception {
        System.out.println("new topic JAVA2");
    }
}

Implementation class:

public class TopicServiceImplementation implements TopicService {

    @Autowired
    private TopicService topicService;

    @Autowired
    private TopicRepository topicRepository;

    @Override
    public TopicBean findById(long id) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public TopicBean findByName(String name) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void saveTopic(TopicBean topicBean) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void updateTopic(TopicBean topicBean) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void deleteTopicById(long id) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public List<TopicBean> findAllTopics() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void deleteAllTopics() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public boolean isTopicExist(TopicBean topicBean) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
}

Rest of the classes are defined too. I don't know why its throwing despite declaring componentScan in main class.

Main class:

@SpringBootApplication(exclude = {SecurityAutoConfiguration.class })
@ComponentScan(basePackages = {"seconds47"})
@EnableJpaRepositories("seconds47.repository")
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

I have my packages like this:

seconds47
seconds47.beans
seconds47.config
seconds47.repository
seconds47.restAPI
seconds47.service

Upvotes: 50

Views: 272808

Answers (14)

Salami Korede
Salami Korede

Reputation: 439

I once ran into a similar problem. You can annotate the service class with @Component and the @SpringBootApplication at Main should carry @SpringBootApplication(ScanBasePackages="com.seconds47")

Upvotes: 0

Luis Alfredo Serrano D&#237;az
Luis Alfredo Serrano D&#237;az

Reputation: 904

I fixed the problem adding this line @ComponentScan(basePackages = {"com.example.DemoApplication"}) to main class file, just up from the class name

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan(basePackages = {"com.example.DemoApplication"})
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

Upvotes: 13

Arefe
Arefe

Reputation: 12471

I just have this issue and this is the solution. Firstly, create an interface as below:

public interface TransactionService {

}

Then implement the methods using a class:

@Service
public class TransactionServiceImpl implements TransactionService {

}

Upvotes: 2

Badri Paudel
Badri Paudel

Reputation: 1630

In case you were wondering where to add @Service annotation, then make sure you have added @Service annotation to the class that implements the interface. That would solve this problem.

Upvotes: 4

Vatz
Vatz

Reputation: 11

Even after doing all the method suggested, i was getting the same error. After trying hard, i got to know that hibernate's maven dependency was added in my pom.xml, as i removed it, application started successfully.

I removed this dependency:

<dependency> <groupId>org.hibernate.javax.persistence</groupId>
 <artifactId>hibernate-jpa-2.0-api</artifactId>
             <version>1.0.1.Final</version>
         </dependency>

Upvotes: 1

Ramu Smartguy
Ramu Smartguy

Reputation: 123

@SpringBootApplication @ComponentScan(basePackages = {"io.testapi"})

In the main class below springbootapplication annotation i have written componentscan and it worked for me.

Upvotes: 2

Arun Tiwari
Arun Tiwari

Reputation: 51

Consider defining a bean of type 'moviecruser.repository.MovieRepository' in your configuration.

This type of issue will generate if you did not add correct dependency. Its the same issue I faced but after I found my JPA dependency is not working correctly, so make sure that first dependency is correct or not.

For example:-

The dependency I used:

    <dependency>
       <groupId>org.springframework.data</groupId>      
       <artifactId>spring-data-jpa</artifactId>
    </dependency>

Description (got this exception):-

Parameter 0 of constructor in moviecruser.serviceImple.MovieServiceImpl required a bean of type 'moviecruser.repository.MovieRepository' that could not be found.

Action:

After change dependency:-

    <!-- 
    <dependency>
       <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>

Response:-

2019-09-06 23:08:23.202 INFO 7780 -
[main]moviecruser.MovieCruserApplication]:Started MovieCruserApplication in 10.585 seconds (JVM running for 11.357)

Upvotes: 5

Jeberdson Abraham
Jeberdson Abraham

Reputation: 571

I solved this issue by creating a bean for my service in SpringConfig.java file. Please check the below code,

@Configuration 
public class SpringConfig { 

@Bean
public TransactionService transactionService() {
    return new TransactionServiceImpl();
}

}

The path of this file is shown in the below image, Spring boot application folder structure

Upvotes: 7

Kumar Kathir
Kumar Kathir

Reputation: 39

Please make sure that you have added the dependency in pom.xml or gradle file

spring-boot-starter-data-jpa

Upvotes: 0

Tarun
Tarun

Reputation: 31

I resolved by replacing the corrupted jar files.

But to find those corrupted jar files, I have to run my application in three IDE- 1) Intellij Idea 2)NetBeans 3) Eclipse.

Netbeans given me information for maximum number of corrupted jar. In Netbeans along with the run, I use the build option(after right clicking on project) to know more about corrupted jars.

It took me more than 15 hours to find out the root cause for these errors. Hope it help anyone.

Upvotes: 3

yahya Harrathi
yahya Harrathi

Reputation: 31

You have to update your 

scanBasePackages = { "com.exm.java" }

to add the path to your service (after annotating it with @service )

Upvotes: 3

Ahmed Tawila
Ahmed Tawila

Reputation: 1038

Since TopicService is a Service class, you should annotate it with @Service, so that Spring autowires this bean for you. Like so:

@Service
public class TopicServiceImplementation implements TopicService {
    ...
}

This will solve your problem.

Upvotes: 12

dunni
dunni

Reputation: 44555

A class must have the @Component annotation or a derivation of that (like @Service, @Repository etc.) to be recognized as a Spring bean by the component scanning. So if you add @Component to the class, it should solve your problem.

Upvotes: 68

Stephane Nicoll
Stephane Nicoll

Reputation: 33151

You are trying to inject a bean in itself. That's obviously not going to work.

TopicServiceImplementation implements TopicService. That class attempts to autowire (by field!) a `TopicService. So you're essentially asking the context to inject itself.

It looks like you've edited the content of the error message: Field topicService in seconds47.restAPI.topics is not a class. Please be careful if you need to hide sensitive information as it makes it much harder for others to help you.

Back on the actual issue, it looks like injecting TopicService in itself is a glitch on your side.

Upvotes: 4

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