Parameter 0 of constructor in required a bean of type 'java.lang.String' that could not be found

Question

I am working on spring batch with spring boot 2.X application, actually its existing code i am checked out from git. While running the application it fails due to below error only for me and same code is working for others.

s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'inputItemReader' defined in file [C:\Users\XYZ\git\main\batch\CBatchProcessing\target\classes\com\main\batchprocessing\batch\reader\InputItemReader.class]: Unsatisfied dependency expressed through **constructor parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'java.lang.String' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations**: {}


Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-10-16 23:23:37.411 ERROR 2384 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

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

Description:

**Parameter 0 of constructor in com.main.batchprocessing.batch.reader.InputItemReader 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 have checked below

1. All Spring components are correctly annotated with @Component, @Service, @Controller,@Repository, etc...
2. @ComponentScan & @EnableAutoCOnfiguration is also provided.
3. Tried giving "java.lang.String" in declarations.

Code:

    import java.util.Map;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.batch.core.ExitStatus;
    import org.springframework.batch.core.StepExecution;
    import org.springframework.batch.core.StepExecutionListener;
    import org.springframework.batch.item.file.FlatFileItemReader;
    import org.springframework.batch.item.file.mapping.JsonLineMapper;
    import 
    org.springframework.batch.item.file.separator.JsonRecordSeparatorPolicy;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.annotation.Bean;
    import org.springframework.core.io.FileSystemResource;
    import org.springframework.stereotype.Component;

    @Component
    public class InputItemReader extends  FlatFileItemReader<Map<String, 
     Object>> implements StepExecutionListener {

    @Autowired
    private InputFileHeaderValidator inputFileHeaderValidator; 

    @Autowired
    private FileAuditService fileAuditService;

    private final Logger log = 
    LoggerFactory.getLogger(InputItemReader.class);

    private java.lang.String inputFilePath;

    public InputItemReader(String inputFilePath) {
        setLineMapper(new JsonLineMapper());
        setRecordSeparatorPolicy(new JsonRecordSeparatorPolicy());
        setResource(new FileSystemResource(inputFilePath));
        this.inputFilePath = inputFilePath;
    }
   }

Answer 1

Since you do not provide the public default constructor and you added your own non-default constructor the instantiation will fail. I would suggest you to define the input file path as property like @Value("${inputFilePath}"). If you need further initialization in your bean define a void method and annotate it with @PostConstruct and do the initialization within.

Answer 2

Add a public default constructor in your class. For example.

public User() {
}

Answer 3

Make sure you are using spring-boot-starter-data-jpa

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

Answer 4

For me, it was because of using @AllArgsConstructor annotation of the lombok. My code was like this:

@Service
@AllArgsConstructor
public class SampleService {

    @Value("${search.page.size}")
    private Integer pageSize;

    private final SampleRepository sampleRepository;

And then, I removed @AllArgsConstructor and added @RequiredArgsConstructor annotation. The problem was solved.

@Service
@RequiredArgsConstructor
public class SampleService {

    @Value("${search.page.size}")
    private Integer pageSize;

    private final BatchRepository batchRepository;

Answer 5

You defined something like this:

@Component
public class InputItemReader{

   public InputItemReader(String input){
     ...
   }
}

The name of your class suggest that your object is not a bean, just a simple object. You should try to use it in classic way:

new InputItemReader(myString);

or to have a static method to process the input String.

Explanation: Spring IoC container will try to instantiate a new InputItemReader object like this :

new InputItemReader( -- WHAT TO PUT HERE? --) 

and will fail to call your constructor, because it will not know what you do actually expect and input string.

UPDATE: Your problem can be solved by removing @Component annotation and defining the bean in a configuration like this:

@Bean
public InputItemReader inputItemReader(InputFileHeaderValidator inputFileHeaderValidator, FileAuditService fileAuditService){
    InputItemReader inputItemReader = new InputItemReader("--HERE SHOULD BE ACTUAL PATH---");
    // set the required service, a cleaner approach would be to send them via constructor
    inputItemReader.setFilteAuditService(fileAuditService);
    inputItemReader.setInputFileHeaderValidator(inputFileHeaderValidator);
    return inputItemReader;
}

Answer 6

I had the same error but the error was generated by Feign Client. If you have this error using feign client you must add @EnableFeignClients on your main class:

@SpringCloudApplication
@EnableFeignClients
public class Application {
...
}

Answer 7

I was also having the same problem, for me following solution worked perfectly fine:

I had annotated my class as @AllArgsConstructor by importing import lombok.AllArgsConstructor

I had just removed this annotation and the code starts working.

Answer 8

I also had the same error:

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

Description:

Field repository in com.example.controller.CampaignController required a bean of type 'com.example.data.CustomerRepository' that could not be found.


Action:

Consider defining a bean of type 'com.example.data.CustomerRepository' in your configuration.de here

I solved this issue by adding @EnableMongoRepositories annotation in the main class:

@SpringBootApplication
@EnableMongoRepositories(basePackageClasses = CustomerRepository.class)
public class CampaignAPI {

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

Answer 9

Even after following the above solutions, if the problem still exists then please check your import statements.

In my case it was the wrong import of @service annotation.

Answer 10

In my case I missed the @Service annotation so once I placed it works.

Answer 11

The issue in my case was a redundant @Autowired, I initially added a dependency using @Autowired, by eventually commenting it out, however, I forgot to comment on the annotation, due to which the method next to @Autowired was considered as some sort of setter.

On removing the redundant annotation it is working fine.

Answer 12

Using @Component worked for me

Answer 13

In my case annotating fields with lombok @NonNull was causing the trouble.

Answer 14

import lombok.RequiredArgsConstructor;

import lombok.extern.slf4j.Slf4j;

@Service
    @RequiredArgsConstructor
    @Transactional
    @Slf4j
    public class UserServiceImp implements UserService, UserDetailsService {
    ....
    }

Answer 15

I had this problem while testing with JUnit. It was that I forgot to create @MockBean annotation, that's why the bean was missing.

Answer 16

Not related to the above issue but if you have the same error of bean creation in a spring boot application and you are getting the same above error please check whether you have added the class path in @ComponentScan( of the main spring booth application launching class.

Answer 17

For it to work I had to add this @RequiredArgsConstructor annotation to my class, and then added this @Value("${inputFilePath}") annotation to access the variable. See below:

    @Component
    @RequiredArgsConstructor
    public class InputItemReader extends  FlatFileItemReader<Map<String, 
     Object>> implements StepExecutionListener {

        @Value("${inputFilePath}")
        private inputFilePath;


        //...

    }

Answer 18

In my case, removing the @EnableJpaRepositories annotation from my config fixed the issue. The repositories are still wired correctly.

Before:

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories
@EnableJpaAuditing
public class PersistenceConfig {

After:

@Configuration
@EnableTransactionManagement
@EnableJpaAuditing
public class PersistenceConfig {

Answer 19

Check if the application.properties file is written correctly.

For some reason my application was spring.profiles.on=test in the application.properties file.

When i change it to the proper value of spring.profiles.active=test it worked.

Answer 20

Generate Constructor from Superclass. It worked for me.

e.g.

public UserModel() {
        super();
        // TODO Auto-generated constructor stub
    }

Answer 21

If you want to add beans to your context that are defined in some external library then use @Import annotation and pass the class file name/bean name. Add @Import to your main configuration file having @SpringBootApplication annotation

Ref : https://www.baeldung.com/spring-import-annotation

Answer 22

Use:

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

instead of:

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

Answer 23

This issue will also occurs when by mistake method is @Autowired in place of @Override but this is a rare case.

General Case:

1. Missing Bean Definition (Service or any component should be anotated properly)
2. Component Scan Make sure that the package containing your class is included in Spring's component scan.
3. Bean Configuration: Verify that you have a bean definition (for Instance you are trying to autowire) in your Spring configuration.
4. @Autowired Annotation: Ensure that the @Autowired annotation is correctly used.

Answer 24

This issue occurred when using spring boot 3.

I used below dependency for sql connecto. Replaced javax with Jakarta for @Table and @Entity. This resolved my issue.

<dependency>
    <groupId>com.mysql</groupId>
    <artifactId>mysql-connector-j</artifactId>
    <version>8.1.0</version>
</dependency>

Answer 25

In my case, I had to use RequiredArgsContructor annotation and removed final keyword for the variable blobContainerName. In the end, it looks like this.

@Service
@RequiredArgsConstructor
public class AzureStorageServiceImpl implements StorageService {

    @Value("${spring.cloud.azure.storage.blob.container-name}")
    private String blobContainerName;

Answer 26

Adding to the "services" block of my application-default.yml & application-kubernetes.yml fixed the issue for me.

Answer 27

I was facing the same issue and it got fixed by removing Constructors from my Model class. Adding sample snippet below:

Map<String, ServiceDefinition> serviceDefinitionMapper = new HashMap<>();
    A def;
    B serviceCharacter;

    @Autowired
    public Scan(Map<String, ServiceDefinition> serviceDefinitionMapper, A def,
            B serviceCharacter) {
        super();
        this.serviceDefinitionMapper = serviceDefinitionMapper;
        this.def = def;
        this.serviceCharacter = serviceCharacter;
    }

Please Note: Do not keep any Constructor/@AllArgsConstructor in your Model class unless it is very much needed to be declared.

Answer 28

In my case, the issue was way different.

@SpringBootApplication
@EnableNeo4jRepositories("com.digital.api.repositories") // <-- This was non-existent.
public class Application {

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

Look at the @EnableNeo4jRepositories annotation. The package defined, was non-existent. Try defining that package, and be careful that the Repository interfaces are based there. Otherwise, Spring will not find the repositories classes that it should load up!

Answer 29

In my case I had this problem but it was because of I added an annotation of @Component in my Exception code which I shouldn't because we don't want it to be scanned really we're just using it to handle an exception in our service or I don't know try to delete the annotation in your built-in exception.

Worked on my machine.

Answer 30

I faced the same issue but with my own created interface repository that could not be found. The answer for me was that Spring 2.6.3 has bugs with Java 8. After I switched to the Java 11 version everything goes correctly.

More info about this kind of problems I found here https://github.com/spring-projects/spring-boot/issues/6987