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 on

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

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 decalred.

Answer 3

The issue in my case was a redundant @Autowired, I initially added a dependency using @Autowired, by eventually commented it out, however I forgot to comment 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 4

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 5

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 6

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!