JPA 存储库在我的项目中不可见

问：

我在启动我的Spring Boot项目时遇到了麻烦，因为我收到一个错误，指出我没有在我的项目中定义Repository类型的bean，即使我有。这是我的代码：

控制器：

package com.example.demo1.controller;

import com.example.demo1.entities.Book;
import com.example.demo1.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
@RequestMapping("/api")
public class BookController {
    @Autowired
    BookService bookService;

    @GetMapping(value="/books/all")
    public ResponseEntity<List<Book>> getAllBooks(){
        return  ResponseEntity.ok(bookService.getAllBooks());
    }

}

服务

package com.example.demo1.service;

import com.example.demo1.entities.Book;
import com.example.demo1.repository.BookJPARepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class BookService {
    @Autowired
    BookJPARepository bookJPARepository;

    public List<Book> getAllBooks(){
        return bookJPARepository.findAll();
    }
}

存储 库

package com.example.demo1.repository;

import com.example.demo1.entities.Book;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface BookJPARepository extends JpaRepository<Book, Long> {
}

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>3.1.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo1</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-data-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-rest</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <image>
                        <builder>paketobuildpacks/builder-jammy-base:latest</builder>
                    </image>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

实体：

    package com.example.demo1.entities;

import jakarta.persistence.*;
import lombok.Data;

@Entity
@Table(name = "books", schema = "books")
@Data
public class Book {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "book_id", nullable = false)
    private Long id;
    @Basic
    @Column(name = "book_name", nullable = false, length = 255)
    private String title;
    @Basic
    @Column(name = "book_author", nullable = false, length = 255)
    private String author;
    @Basic
    @Column(name = "book_publishing_house", nullable = false, length = 255)
    private String publishing_house;
    @Basic
    @Column(name = "book_price")
    private float price;

    public Book(String book_name, String book_author, String book_price, String book_publishing_house) {
    this.title=book_name;
    this.author=book_author;
    this.price=Float.parseFloat(book_price);
    this.publishing_house=book_publishing_house;
    }
}

应用程序是这个：

    package com.example.demo1;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@SpringBootApplication
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
@ComponentScan
@Configuration
public class Demo1Application {

    public static void main(String[] args) {
        SpringApplication.run(Demo1Application.class, args);
    }

}

错误是这样的：

应用程序无法启动

描述：

com.example.demo1.service.BookService 中的字段 bookJPARepository 需要一个找不到的“com.example.demo1.repository.BookJPARepository”类型的 bean。

注入点具有以下注释： - @org.springframework.beans.factory.annotation.Autowired（required=true）

行动：

请考虑在配置中定义一个类型为“com.example.demo1.repository.BookJPARepository”的 bean。

我错过了什么吗？你能帮帮我吗？

我希望我的应用程序应该启动。使用 Spring initialzr 创建项目时，我是否遗漏了任何依赖项？