Question

我使用gradle创建了spring boot数据jpa应用程序，我的项目结构如下所示。

com.duregesh

 --TestSpringBootDataJpaApplication.java

com.durgesh.controller

 --UserController.java

com.durgesh.model

 --User.java

com.durgesh.repositories

 --UserJpaRepository.java

com.durgesh.services

 --UserServiceImpl.java

当我在弹出启动时，异常正在触发说明：

com.durgesh.services.UserServiceImpl中的字段userJpaRepository需要一个名为＆＃39; emf＆＃39;的bean。无法找到。

操作：考虑定义一个名为“emf＆＃39;”的bean。在你的配置中。

@SpringBootApplication
public class TestSpringBootDataJpaApplication {
    public static void main(String[] args) {
        SpringApplication.run(TestSpringBootDataJpaApplication.class, args);
    }
-------------
public interface UserJpaRepository extends JpaRepository<User, Long> {}
-------------
@Entity
@Table(name = "USER")   
public class User implements Serializable{
        @Id
        private Long id;
        @Column(unique = true)
        private String uid;
        private String password;
        public Long getId() {
            return id;
        }
        public void setId(Long id) {
            this.id = id;
        }
        public String getUid() {
            return uid;
        }
        public void setUid(String uid) {
            this.uid = uid;
        }
        public String getPassword() {
            return password;
        }
        public void setPassword(String password) {
            this.password = password;
        }
        }
----------------
@Service
@EnableJpaRepositories(basePackages="com.construction.de.*", entityManagerFactoryRef="emf")
public class UserServiceImpl implements UserService {
    @Autowired
    private UserJpaRepository userJpaRepository;
    @Override
    public User add(final User user) {
        return userJpaRepository.save(user);
    }
    @Override
    public User findById(final Long id) {
        final User user = userJpaRepository.findOne(id);
            return user;
    }
}
----
@RestController
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;
    @RequestMapping(value ="/",method = RequestMethod.POST)
    public User add( @RequestBody final User user){
        return userService.add(user);
    }
    @RequestMapping(value ="/{id}",method = RequestMethod.GET)
    public User findById(@PathVariable("id") final Long id){
        return userService.findById(id);        
    }
}

Answer 1

问题在于您的数据库entityManager配置，您需要按照以下步骤操作：

（1）向Application类提供@EnableJpaRepositories，如下所示（从服务中删除）。

@SpringBootApplication
@EnableJpaRepositories(basePackages="com.duregesh.*")
public class TestSpringBootDataJpaApplication {
    public static void main(String[] args) {
        SpringApplication.run(TestSpringBootDataJpaApplication.class, args);
}

（2）提供在application.properties（在eclipse中的src/main/resources下或服务器中的WEB-INF/classes文件夹下）配置的数据库驱动程序和连接属性，如下所示：

spring.datasource.url: YOUR_DB_URL
spring.datasource.driverClassName: YOUR_DB_DRIVER_CLASS
spring.datasource.username: YOUR_DB_USER
spring.datasource.password: YOUR_DB_PWD

我无法运行弹簧靴

1 个答案: