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I'm trying to write a simple CRUD program and I get this error. The program is based after codecademy project. Not sure why I doesn't work.

If I comment out the constructor the error disappears.I don't have anything in my properties.

Can someone give me a hand?

Description: Parameter 0 of constructor in com.example.FitApp3.controller.FoodController required a bean of type 'com.example.FitApp3.repository.FoodRepository' that could not be found. Action: Consider defining a bean of type 'com.example.FitApp3.repository.FoodRepository' in your configuration. Process finished with exit code 1

This is my code:

Entity/Food.java

import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity public class Food extends com.example.FitApp3.model.Entity { private String foodName; private int foodKcal; private int foodProtein; private int foodCarb; private int foodFat; public String getFoodName() { return foodName; } public void setFoodName(String foodName) { this.foodName = foodName; } public int getFoodKcal() { return foodKcal; } public void setFoodKcal(int foodKcal) { this.foodKcal = foodKcal; } public int getFoodProtein() { return foodProtein; } public void setFoodProtein(int foodProtein) { this.foodProtein = foodProtein; } public int getFoodCarb() { return foodCarb; } public void setFoodCarb(int foodCarb) { this.foodCarb = foodCarb; } public int getFoodFat() { return foodFat; } public void setFoodFat(int foodFat) { this.foodFat = foodFat; } }

Repository/FoodRepository.java

public interface FoodRepository extends CrudRepository<Food, Integer> {}

Controller/FoodController.java

@RestController public class FoodController { private FoodRepository foodRepository; public FoodController(FoodRepository foodRepository) { this.foodRepository = foodRepository; } }

Mainclass

@SpringBootApplication public class FitApp3Application { public static void main(String[] args) { SpringApplication.run(FitApp3Application.class, args); System.out.println("hello world"); } }

pom.xml

<?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>2.6.2</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example</groupId> <artifactId>FitApp3</artifactId> <version>0.0.1-SNAPSHOT</version> <name>FitApp3</name> <description>Demo project for Spring Boot</description> <properties> <java.version>17</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>javax.persistence</groupId> <artifactId>javax.persistence-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-commons</artifactId> <version>2.5.1</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
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  • Can you please add your main class and also your pom.xml? Thanks! Commented Jan 17, 2022 at 22:32
  • I did. Thx for the quick reply.. Commented Jan 17, 2022 at 22:38
  • An attempt was made to call a method that does not exist. The attempt was made from the following location: org.springframework.data.jpa.mapping.JpaPersistentPropertyImpl.getPersistentEntityTypeInformation(JpaPersistentPropertyImpl.java:145) The following method did not exist: 'java.lang.Iterable org.springframework.data.mapping.model.AnnotationBasedPersistentProperty.getPersistentEntityTypeInformation()' I tried to reimport everything but no luck. Commented Jan 17, 2022 at 23:05
  • Add spring-boot-starter-data-jpa remove the spring-data-commons and javax.persistence-api dependencies. Commented Jan 18, 2022 at 6:25

4 Answers 4

Reset to default
0

Can you add @Repository annotation to FoodRepository interface.

@Repository public interface FoodRepository extends CrudRepository<Food, Integer> {}
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5 Comments

I did, didn't work.
So, can you please provide package name FitApp3Application?
com.example.FitApp3
Can you also try it with "spring-boot-starter-data-jpa" dependency (that João mentioned).
Adding @Repository to a Spring Data repository doesn't add anything.
0

You need to replace spring-boot-starter-jdbc with spring-boot-starter-data-jpa as follows:

<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies>

You can have a look at the following links the difference between them, but basically, JPA helps you deal with your Database data by mapping it directly to Java objects:

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3 Comments

Now all my annotations don't work and importing doesn't work.
Sorry, my bad. I've fixed the dependency name. Please check it ;)
@cyze, I've updated my answer, please check it. Thanks!
0

I think you are just a little bit confused with spring-jdbc, spring-data and spring persistence interfaces abstraction, let me help. TL;DR solution is at the bottom:

In the constructor of FoodController you are declaring FoodRepository as a parameter, so spring have to find the bean of this time at runtime in order to create bean of FoodController. You have declared FoodRepository and extend it from CrudRepository. I guess, that you have done it with the assumption, that spring will create an implementation of FoodRepository at runtime (because it extends CrudRepository). But, unfortunately, it is not the spring-core module, that will create bean of FoodRepsitory, nor it is spring-jdbc. This interfaces are the part of spring-data project. So, for creation of the bean of the type FoodRepository is responsible current spring-data project in your classpath (I mean, it could be spring-data-jdbc, spring-data-jpa or whatever). This interfaces (CrudRepository, Repository e.t.c.) are common for all of the spring data projects, so they are shipped in spring-data-commons jar, this is why you have them available in classpath, because you have included spring-data-commons explicitly:

 <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-commons</artifactId> <version>2.5.1</version> </dependency>

Another thing is that this starter:

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

does not do anything with spring-data project - it just brings spring-jdbc, Hikari connection pool, and some other spring-boot stuff. In other words, the problem is that you do not have any spring-data project in your classpath, thats why FoodRepository bean is not created.

Also note: @Entity does not make sense here, becuase you do not have any jpa persistence provider in classpath

Solution:

To solve the problem, I suggest you to

  1. Remove spring-data-commons dependency from pom.xml
  2. Include spring-boot-starter-data-jpa into your project (into pom.xml). It will bring the appropriate version of spring-data-commons dependency.

Hope it helped, have a nice day!

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Comments

-1

Add @Repository annotation to FoodRepository interface and also @Autowired annotation to the FoodRepository in FoodController.

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1 Comment

Adding that to the Spring Data repository adds nothing.

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