Возникает ошибка, связанная с beans при использовании Spring. Как исправить?

Question

Alex_299 @Alex_299

Spring

Возникает ошибка, связанная с beans при использовании Spring. Как исправить?

решил для практики тестирования API развернуть свой собственный rest сервис на Java. Вроде все собрал, но при запуске возникает ошибка.

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'itemController' defined in file [J:\Jprojects\Aastri\target\classes\com\example\demo\controller\ItemController.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'itemService' defined in file [J:\Jprojects\Aastri\target\classes\com\example\demo\service\ItemService.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'itemRepository' defined in com.example.demo.repo.ItemRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Not a managed type: class com.example.demo.model.Item

мой pom

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>demo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>6.2.5</version>
        </dependency>

        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>javax.persistence-api</artifactId>
            <version>2.2</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
            <version>3.4.3</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>3.4.4</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
            <version>3.4.4</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.36</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>42.7.4</version>
        </dependency>

    </dependencies>

</project>

мой класс контроллера

package com.example.demo.controller;

import com.example.demo.dto.ItemDTO;
import com.example.demo.model.Item;
import com.example.demo.service.ItemService;
import lombok.AllArgsConstructor;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@AllArgsConstructor
public class ItemController {

    private final ItemService itemService;

    @PostMapping
    public ResponseEntity<Item> create(@RequestBody ItemDTO dto) {
        return new ResponseEntity<>(itemService.create(dto), HttpStatus.OK);
    }

    @GetMapping
    public ResponseEntity<List<Item>> readAll() {
        return new ResponseEntity<>(itemService.readAll(), HttpStatus.OK);
    }

    @PutMapping
    public ResponseEntity<Item> update(@RequestBody Item item) {
        return new ResponseEntity<>(itemService.update(item), HttpStatus.OK);
    }

    @DeleteMapping("/{id}")
    public HttpStatus delete(@PathVariable Long id) {
        itemService.delete(id);
        return HttpStatus.OK;
    }
}

класс Item

package com.example.demo.model;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class Item {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    private Short amount;
}