在 com.x.x.service.UserService 中字段用户存储库需要一个类型为“com.x.x.存储库.用户存储库”的 Bean，但找不到

Question

早上好！尽管我做了很多研究，但我无法用application spring解决这个问题，有人可以帮我，我使用jdk 17

我的服务类

@Service
public class UserServiceImpl implements UserService{

@Autowired
public UserRepository userRepository;

@Override
public void save(UserModel user) {
    userRepository.save(user);
}
@Override
public void update(UserModel user) {

}
@Override
public UserModel load(UserModel user) {
    return null;
}

@Override
public List<UserModel> loadByMultiple(String data) {
    return null;//userRepository.loadByMultiple(data);
}


@Override
public UserModel loadByUsername(String username) {
    return null;
}

@Override
public UserModel loadByEmail(String email) {
    return null;
}

@Override
public UserModel loadByPhone(String phone) {
    return null;
}

@Override
public void delete(UserModel user) {

}
}

我的存储库类

@Repository
public interface UserRepository extends JpaRepository<UserModel, Long> {

/*@Query("""
        SELECT u FROM user u WHERE u.user_name LIKE % :data% or  u.last_name = LIKE % :data%
         """)
List<UserModel> loadByMultiple(@Param("data") String data);*/

}

@SpringBootApplication
public class DecouverteBackendApplication {

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

}

<?xml version="1.0" encoding="UTF-8"?>

4.0.0 org.springframework。boot spring boot starter父版2.6.7 com。无限逻辑解码_后端0.0.1-SNAPSHOT解码_后端解码_后端

    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <version>1.4.200</version>
    </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-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-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web-services</artifactId>
    </dependency>

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <optional>true</optional>
    </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>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <excludes>
                    <exclude>
                        <groupId>org.projectlombok</groupId>
                        <artifactId>lombok</artifactId>
                    </exclude>
                </excludes>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>17</source>
                <target>17</target>
            </configuration>
        </plugin>
    </plugins>
</build>

我的项目结构在此处输入图像描述

Answer 1

试试这个（使用Lombok的必需的ArgsConstructor）：

@Service
@RequiredArgsConstructor
public class UserServiceImpl implements UserService{

private final UserRepository userRepository;

@Override
public void save(UserModel user) {
    userRepository.save(user);
}
...

Answer 2

当存储库包与@SpringBootApplication/@EnableAutoConfiguration不同时，需要显式定义@EnableJpaRepositories的基包。

尝试将@ EnableJpaRepositories(" your . package . structure . here ")添加到DecouverteBackendApplication