Repository bean cannot be found (No idea why) - spring

Question

I'm trying to run my application and I'm receiving this error:
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of constructor in com.danielturato.product.services.ProductServiceImpl required
a bean of type 'com.danielturato.product.persistence.ProductRepository' that could not be
found.
Action:
Consider defining a bean of type 'com.danielturato.product.persistence.ProductRepository' in
your configuration.
I have no idea why this is occurring. I've tried to look at past solutions where its said to use the #EnableMongoRepository to point to the correct package however I have tried this and it doesn't work. I've also tried adding the #Repository annotation above my repository (even though its not needed) and it doesn't work still. Here is my code for my repository, application & where the repository is failing to be injected.
Application:
#SpringBootApplication
#ComponentScan("com.danielturato")
public class ProductServiceApplication {
private static final Logger LOG = LoggerFactory.getLogger(ProductServiceApplication.class);
public static void main(String[] args) {
SpringApplication.run(ProductServiceApplication.class, args);
}
}
Repository:
public interface ProductRepository extends ReactiveCrudRepository<ProductEntity, String> {
Mono<ProductEntity> findByProductId(int productId);
}
ProductServiceImpl:
#RestController
public class ProductServiceImpl implements ProductService {
private static final Logger LOG = LoggerFactory.getLogger(ProductServiceImpl.class);
private final ServiceUtil serviceUtil;
private final ProductRepository repository;
private final ProductMapper mapper;
#Autowired
public ProductServiceImpl(ProductRepository repository, ProductMapper mapper, ServiceUtil serviceUtil) {
this.repository = repository;
this.mapper = mapper;
this.serviceUtil = serviceUtil;
}
Pom 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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.danielturato</groupId>
<artifactId>product-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>product-service</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct</artifactId>
<version>1.4.0.Beta1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.danielturato</groupId>
<artifactId>api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.danielturato</groupId>
<artifactId>util</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
<version>2.3.1.RELEASE</version>
</dependency>
<dependency>
<groupId>de.flapdoodle.embed</groupId>
<artifactId>de.flapdoodle.embed.mongo</artifactId>
<version>2.2.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-stream-kafka</artifactId>
<version>3.0.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-stream-rabbit</artifactId>
<version>3.0.6.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
<annotationProcessorPaths>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>1.3.0.Beta2</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>
</project>
If anyone can suggest for me anything to try or would like me to put more info here please let me know.

Answer 1

The stack trace you have included in your question does point to the ProductRepository not being available for autowiring and as a previous comment has pointed out this is because you are missing the #Repository annotation from your repository.
Another reason is if your repository cannot find a matching entity. This might be for example if the Id is the wrong type or is missing the #Id annotation, if the entity doesn't have either #Entity/#Document or if it is missing an all args constructor. Plus in your case you have added a findByProductId() method so your entity will need a productId field too.
I would also remove the #ComponentScan annoatation from your application class as this is included by default in #SpringBootApplication unless you are intentionally pointing it at a different class path.
If this still fails as you have mentioned in your comments is it failing for the same reason or is there a different error now related to ProductMapper or ServiceUtil?