创建名为“dieta controller”的bean时出错

Question

所以，我有一个类似这样的问题:2020-01-30 22:54:20.059错误8040--[main]O.S.Boot.SpringApplication：应用程序运行失败

UnsatisfiedDependencyException：创建名为“Dieta Controller”的bean时出错：通过字段“Dieta Repository”表示的不满足依赖项；嵌套异常为org.springframework.beans.factory.BeanCreationException：创建名为“dieta repository”的bean时出错：调用init方法失败；嵌套异常为java.lang.IllegalArgumentException：不是托管类型：class com.diet4you.lapkoekaterina.entity.dieta My 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.diet4you</groupId>
    <artifactId>LapkoEkaterina</artifactId>
    <version>1.0-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>

    </parent>
    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-thymeleaf -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
            <version>2.2.2.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</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>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.3.2.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.2.3.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.validator</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>6.0.16.Final</version>
        </dependency>

        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.3.0</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>

        </plugins>
    </build>
</project>

我的实体：

@Entity
@Table(name = "diety")
public class Dieta {
    @Id
    @GeneratedValue(strategy= GenerationType.AUTO)
    @Column(name="DIETA_ID") private int dietaId;
    @NotEmpty
    @Column(unique=true, name ="DIETA_NAZWA")
    private String nazwa;
    @NotEmpty
    @Column(name="OPIS") private String opis;
    public Dieta(){ }
    public Dieta (int dietaId,String nazwa, String opis )
    { this.dietaId = dietaId;
    this.nazwa = nazwa;
    this.opis = opis; }
    public int getDietaId() {
        return dietaId; }
        public void setDietaId(int dietaId) {
        this.dietaId = dietaId; }
        public String getNazwa() {
        return nazwa; }
        public void setNazwa(String nazwa) {
        this.nazwa = nazwa; }
        public String getOpis() {
        return opis; }
        public void setOpis(String opis) {
        this.opis = opis; }
}

@Repository
public interface DietaRepository extends JpaRepository<Dieta, String> {
    Dieta findByName (String name);
}

和我的控制器：

@RestController
public class DietaController {
    @Autowired
    private DietaRepository dietaRepository;
    @GetMapping("/dieta")
    public List<Dieta> getAllNotes() {
        return dietaRepository.findAll();
    }

}

应用程序java类：

@Configuration
@SpringBootApplication
@EnableJpaRepositories
@EntityScan ( basePackages  = { " com.diet4you.LapkoEkaterina" })
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

Answer 1

>

删除@EntityScan(basePackages={“com.diet4you.lapkoekaterina”}）与com.diet4you...之间的空格

将extends jparepository 更改为extends jparepository

删除或修复存储库接口的dieta findByName（字符串名称），它是错误的