[java] Consider defining a bean of type 'package' in your configuration [Spring-Boot]

I am getting the following error:

***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 0 of method setApplicant in webService.controller.RequestController required a bean of type 'com.service.applicant.Applicant' that could not be found.


Action:

Consider defining a bean of type 'com.service.applicant.Applicant' in your configuration.

I have never seen this error before but it's odd that the @Autowire is not working. Here is the project structure:

Applicant Interface

public interface Applicant {

    TApplicant findBySSN(String ssn) throws ServletException;

    void deleteByssn(String ssn) throws ServletException;

    void createApplicant(TApplicant tApplicant) throws ServletException;

    void updateApplicant(TApplicant tApplicant) throws ServletException;

    List<TApplicant> getAllApplicants() throws ServletException;
}

ApplicantImpl

@Service
@Transactional
public class ApplicantImpl implements Applicant {

private static Log log = LogFactory.getLog(ApplicantImpl.class);

    private TApplicantRepository applicantRepo;

@Override
    public List<TApplicant> getAllApplicants() throws ServletException {

        List<TApplicant> applicantList = applicantRepo.findAll();

        return applicantList;
    }
}

Now I should be able to just Autowire Applicant and be able to access, however in this case it is not working when I call it in my @RestController:

@RestController
public class RequestController extends LoggingAware {

    private Applicant applicant;

    @Autowired
    public void setApplicant(Applicant applicant){
        this.applicant = applicant;
    }

    @RequestMapping(value="/", method = RequestMethod.GET)
    public String helloWorld() {

        try {
            List<TApplicant> applicantList = applicant.getAllApplicants();

            for (TApplicant tApplicant : applicantList){
                System.out.println("Name: "+tApplicant.getIndivName()+" SSN "+tApplicant.getIndSsn());
            }

            return "home";
        }
        catch (ServletException e) {
            e.printStackTrace();
        }

        return "error";
    }

}

------------------------UPDATE 1-----------------------

I added

@SpringBootApplication
@ComponentScan("module-service")
public class WebServiceApplication extends SpringBootServletInitializer {

    @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(WebServiceApplication.class);
    }

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

}

and the error went away but nothing happened. However when I commented out everything dealing with Applicant in the RestController prior to adding @ComponentScan() I was able to return a string the UI, thus meaning my RestController was working, now it is being skipped. I ugly Whitelabel Error Page now.

---------------------UPDATE 2------------------------------

I added the base package of the bean it was complaining about. Error reads:

***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 0 of method setApplicantRepo in com.service.applicant.ApplicantImpl required a bean of type 'com.delivery.service.request.repository.TApplicantRepository' that could not be found.


Action:

Consider defining a bean of type 'com.delivery.request.request.repository.TApplicantRepository' in your configuration.

I added @ComponentScan

@SpringBootApplication
@ComponentScan({"com.delivery.service","com.delivery.request"})
public class WebServiceApplication extends SpringBootServletInitializer {

    @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(WebServiceApplication.class);
    }

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

}

----------------------------Update 3----------------------

adding:

@SpringBootApplication
@ComponentScan("com")
public class WebServiceApplication extends SpringBootServletInitializer {

still is complaining about my ApplicantImpl class which @Autowires my repo TApplicantRepository into it.

To fix errors like:

• Consider defining a bean of type 'package' in your configuration
• Not a managed type

It happened to me that the LocalContainerEntityManagerFactoryBean class did not have the setPackagesToScan method. Then I proceeded to use the @EntityScan annotation which doesn't work correctly.

Later I could find the method setPackagesToScan() but in another module, so the problem came from the dependency which did not have this method because it was an old version.

This method can be found in the spring-data-jpa or spring-orm dependency of updated versions:

From:

implementation("org.springframework", "spring-orm", "2.5.1") 

To:

implementation("org.springframework", "spring-orm", "5.2.9.RELEASE")

Or to:

implementation("org.springframework.data", "spring-data-jpa", "2.3.4.RELEASE")

In addition, it was not necessary to add other annotations other than that of @SprintBootApplication.

@SpringBootApplication
open class MoebiusApplication : SpringBootServletInitializer()

@Bean
open fun entityManagerFactory() : LocalContainerEntityManagerFactoryBean {
    val em = LocalContainerEntityManagerFactoryBean()
    em.dataSource = dataSource()
    em.setPackagesToScan("app.mobius.domain.entity")
    ... 
}

GL

Source

There is a chance that you are trying to @autowired an interface before implement the interface.

example solution:

    **HomeController.java**
    class HomeController{

      @Autowired
      UserService userService;
    .....
    }
----------------------------------------------------------------------
    **UserService.java** 
    public interface UserService {
        User findByUsername(String username);
    .....
    }
-----------------------------------------------------------------------
     **UserServiceImpl.java**
     @Service
     public class UserServiceImpl implements UserService{

         public User findByUsername(String username) {
           return userDao.findByUsername(username);
         }
        ....
      }

<i>This is not italic</i>, and [this is not a link](https://example.com)

If a bean is in the same package in which it is @Autowired, then it will never cause such an issue. However, beans are not accessible from different packages by default. To fix this issue follow these steps :

1. Import following in your main class:
   import org.springframework.context.annotation.ComponentScan;
2. add annotation over your main class :

@ComponentScan(basePackages = {"your.company.domain.package"})
public class SpringExampleApplication {

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

My error was that I had included:

<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-jpa</artifactId>
    <version>2.2.5.RELEASE</version>
</dependency>

instead of:

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

I think, you are missing the @Bean annotation in your RequestController

Add the Bean in your file, this solved my issue
I got this solution while I was learning Spring Boot from tutorialspoint

private Applicant applicant;

@Bean 
public Applicant applicant() { 
    return new Applicant(); 
}

In my case I had a terrible mistake. I put @Service up to the service interface.

To fix it, I put @Service on the implementation of service file and it worked for me.

check the base package name.If the package has different modules that are not prefixed with base package name.

It might help somebody. I had the same problem, same error message, same everything. I tried solutions from other answers, didn't help until I realised that the bean I am using has the same name as the one that is actually been autowired. It happened in the midst of refactor, thus I had to rename the class, which resulted positively. Cheers

There is a chance...
You might be missing @Service, @Repository annotation on your respective implementation classes.

For me worked a clean install on pom.xml

1. right click on pom.xml

2. expand Run As

3. select Maven build

4. set Goals to the command clean install

5. apply > run > close

If your class dependency is managing by Spring then this issue may occur if we forgot to add default/empty arg constructor inside our POJO class.

In my case these two options worked.

1. in //@ComponentScan ({"myapp", "myapp.resources","myapp.services"}) include also the package which holds the Application.class in the list, or

2. Simply add @EnableAutoConfiguration; it automatically recognizes all the spring beans.

If you use interface you can extends CrudRepository<Applicant,Long> with @Repository annotation.

Adding Spring Boot Data JPA Starter dependency solved the issue for me.

Maven

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
    <version>2.2.6.RELEASE</version>
</dependency>

Gradle

compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa', version: '2.2.6.RELEASE'

Or you can go directly here

I had a case where i need to inject RestTemplate into a service class. However, the RestTemplate cannot be picked up by the service class. What I did is to create a wrapper class under the same package as main application and mark the wrapper as Component and autowire this component in the service class. Problem solved. hope it also works for you

@SpringBootApplication
@MapperScan("com.developer.project.mapper")

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

Try configuring the project structure as given below:

Put all the repo, service, packages in the child package of the main package:

package com.leisure.moviemax;  //Parent package
        
@SpringBootApplication
@PropertySource(value={"classpath:conf.properties"})
    
public class MoviemaxApplication implements CommandLineRunner {
        
package com.leisure.moviemax.repo; //child package

@Repository
public interface UsrRepository extends JpaRepository<UserEntity,String> {

This can also happen if you are using Lombok and you add the @RequiredArgsConstructor and @NonNull for fields but some of your fields are not to be injected in the constructor. This is only one of the possibilities to get the the same error.

parameter 0 required a bean of type MissingBeanName that could not be found

In my case the error told me what Controller the problem was in, after removing @NonNull the application started fine

I faced with familiar problem in my Maven multi-module project with Spring Boot 2. The problem was related to naming of my packages in sub Maven modules.

@SpringBootApplication incapsulate a lots of component like - @ComponentScan, @EnableAutoConfiguration, jpa-repositories, json-serialization and so on. And he places @ComponentScan in com.*******.space package. This part of packages com.*******.space must be common for all modules.

For fixing it:

1. You should rename all module packages. Other words you had to have in all packages in all Maven modules - the same parent part. For example - com.*******.space
2. Also you have to move your entry point to this package - com.*******.space

I faced the same issue. Mongo DB repository was identified by Spring boot, but it was not creating Bean for a repository interface that extended the mongo repository.

The issue in my case was incorrect version specification in maven pom for "spring + mango". I have changed the artifact's group id and it all worked like magic. no annotations needed as spring boot took care of everything.

During my problem resolution, I was all over web searching for solutions and realized that this problem is actually project configuration related, anyone facing this issue should first check their project setup and enable debug from spring to get more details on failure and pay close attention to where exactly in the process, the creation has failed.

For me - using Spring Boot with MongoDB, the following was the Problem:

In my POM.xml I had:

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

but I needed the following:

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

(Short: Add "spring-boot-..." instead of only "spring-...")

Your Applicant class is not scanned it seems. By default all packages starting with the root as the class where you have put @SpringBootApplication will be scanned.

suppose your main class "WebServiceApplication" is in "com.service.something", then all components that fall under "com.service.something" is scanned, and "com.service.applicant" will not be scanned.

You can either restructure your packages such that "WebServiceApplication" falls under a root package and all other components becomes part of that root package. Or you can include @SpringBootApplication(scanBasePackages={"com.service.something","com.service.application"}) etc such that "ALL" components are scanned and initialized in the spring container.

Update based on comment

If you have multiple modules that are being managed by maven/gradle, all spring needs is the package to scan. You tell spring to scan "com.module1" and you have another module which has its root package name as "com.module2", those components wont be scanned. You can even tell spring to scan "com" which will then scan all components in "com.module1." and "com.module2."

reminder that spring doesn't scan the world , it uses targeted scanning wich means everything under the package where springbootapplication is stored. therefore this error "Consider defining a bean of type 'package' in your configuration [Spring-Boot]" may appear because you have services interfaces in a different springbootapplication package .

@Configuration annotation will just solve the error

In my case this error appear because my import was wrong, for example, using spring, the import automatically appear:

import org.jvnet.hk2.annotations.Service;

but i needed:

import org.springframework.stereotype.Service;

Issue can also appeared when you use per example @EnableMongoRepositories(YOUR_MONGO_REPOSITORIES_PACKAGE) and later you renamed the package name or moved it in another place.

Very often faced it within a multi-module maven project and spring boot

It worked for me after adding below annotation in application:

@ComponentScan({"com.seic.deliveryautomation.mapper"})

I was getting the below error:

"parameter 1 of constructor in required a bean of type mapper that could not be found:

Basically this happens when you have your Class Application in "another package". For example:

com.server
 - Applicacion.class (<--this class have @ComponentScan)
com.server.config
 - MongoConfig.class 
com.server.repository
 - UserRepository

I solve the problem with this in the Application.class

@SpringBootApplication
@ComponentScan ({"com.server", "com.server.config"})
@EnableMongoRepositories ("com.server.repository") // this fix the problem

Another less elegant way is to: put all the configuration classes in the same package.

Important:

For anybody who was brought here by googling the generic bean error message, but who is actually trying to add a feign client to their Spring Boot application via the @FeignClient annotation on your client interface, none of the above solutions will work for you.

To fix the problem, you need to add the @EnableFeignClients annotation to your Application class, like so:

@SpringBootApplication
// ... (other pre-existing annotations) ...
@EnableFeignClients // <------- THE IMPORTANT ONE
public class Application {

Side note: adding a @ComponentScan(...) beneath @SpringBootApplication is redundant, and your IDE should flag it as such (IntelliJ IDEA does, at least).

Remove annotation type configuration like @Service from the thread run method.

@Service, @Component

You'll also get this error if you accidentally define the same bean in two different classes. That happened to me. The error message was misleading. When I removed the extra bean, the issue was resolved.

Moving the Springbootapplication(application.java) file to another package resolved the issue for me. Keep it separate from the controllers and repositories.

This can happen if the @Service class is marked abstract.

I think you can make it simplified by annotated your repository with @Repository, then it will be enabled automatically by Spring Framework.

I sought online for an answer but it seems there is no one proper solution to my case: At the very beginning, everything works well as follows:

@Slf4j
@Service
@AllArgsConstructor(onConstructor = @__(@Autowired))
public class GroupService {
    private Repository repository;
    private Service service;
}

Then I am trying to add a map to cache something and it becomes this:

@Slf4j
@Service
@AllArgsConstructor(onConstructor = @__(@Autowired))
public class GroupService {
    private Repository repository;
    private Service service;
    Map<String, String> testMap;
}

Boom!

Description:

Parameter 4 of constructor in *.GroupService required a bean of type 'java.lang.String' that could not be found.


Action:

Consider defining a bean of type 'java.lang.String' in your configuration.

I removed the @AllArgsConstructor(onConstructor = @__(@Autowired)) and add @Autowired for each repository and service except the Map<String, String>. It just works as before.

@Slf4j
@Service
public class SecurityGroupService {
    @Autowired
    private Repository repository;
    @Autowired
    private Service service;
    Map<String, String> testMap;
}

Hope this might be helpful.