Question

我创建了一个自定义存储库。在这个存储库中，我需要访问标准存储库（findAll）的一些方法，所以我添加了

我用过春季靴子

@EntityScan(basePackageClasses = {UserAgendaApplication.class, Jsr310JpaConverters.class})
@SpringBootApplication
public class UserAgendaApplication {

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


public interface UsersRepositoryCustom {
    public Page<Users> customSearch(UserSearch UserSearch, Pageable page);
}



public interface UsersRepository extends JpaRepository<Users, Integer>, JpaSpecificationExecutor<Users>, UsersRepositoryCustom {

}


@Repository
public class UsersRepositoryImpl implements UsersRepositoryCustom {

    @PersistenceContext
    private EntityManager em;

    private final UsersRepository usersRepository;

   @Autowired
   public UsersRepositoryImpl(final UsersRepository usersRepository){
        this.usersRepository=usersRepository;
   }

   @Override
   public Page<Users> customSearch(UserSearch UserSearch, Pageable page) {
         ...
         return usersRepository.findAll(specification, page);

   }

}

@Service
public class UsersServiceImpl implements UsersService {

    @Autowired
    public UsersServiceImpl(UsersRepository usersRepository) {
        this.usersRepository = usersRepository;
    }

    private UsersRepository usersRepository;

    @Override
public Page<Users> customSearch(UserSearch userSearch, Pageable page) {
   usersRepository.customSearch(userSearch, page);
    ... 
}

}

在

的控制器中

@Controller
public class UsersController {

     private final UsersService usersService;

    @Autowired
    public UsersController( final usersService usersService){
        this.usersService=usersService;
    }

}

org.springframework.beans.factory.UnsatisfiedDependencyException：   创建名为'usersController'的bean时出错：不满意   通过字段'usersService'表示的依赖;
  嵌套异常   是org.springframework.beans.factory.UnsatisfiedDependencyException：   创建在文件中定义名为'usersServiceImpl'的bean时出错   [/home/alpha/Development/project/UserAgenda/build/classes/main/com/alpha/userAgenda/service/UsersServiceImpl.class]：   通过构造函数参数0表示的不满意的依赖性;   嵌套异常是   org.springframework.beans.factory.BeanCurrentlyInCreationException：   创建名为'usersRepositoryImpl'的bean时出错：名称为Bean   'usersRepositoryImpl'已注入其他bean   [usersRepository]在其原始版本中作为循环引用的一部分，   但最终被包裹了。这意味着所说的其他豆子   不要使用bean的最终版本。这往往是结果   过度的类型匹配 - 考虑使用'getBeanNamesOfType'   例如，'allowEagerInit'标志已关闭。

我试图在控制器和UsersRepositoryImpl中将setUsersRepository置于自动装配但是得到相同的错误

修改

public abstract class UsersRepositoryCustom extends SimpleJpaRepository<Users, Integer>

public Page<Users> customSearch(UserSearch userSearch, Pageable page) {
...
}

因为我使用SimpleJpaRepository，我不再需要UserRepository了，但是我需要在UersRepositoryCustom中添加这段代码

private final EntityManager entityManager;
private final JpaEntityInformation<Users, Integer> entityInformation;

@Autowired
public UsersRepositoryCustom(final JpaEntityInformation<Users, Integer> entityInformation,
        final EntityManager entityManager) {
    super(entityInformation, entityManager);
    this.entityManager = entityManager;
    this.entityInformation = entityInformation;
}

在我实现UsersService的UsersServiceImpl中，我有

@Autowired
public UsersRepositoryCustom usersRepositoryCustom;

我得到了

.UsersRepositoryImpl中构造函数的参数0需要一个无法找到的类型为'org.springframework.data.jpa.repository.support.JpaEntityInformation'的bean。

编辑2

gradle config

buildscript {
    ext {
        springBootVersion = '2.0.0.M2'
    }
    repositories {
        mavenCentral()
        maven { url "https://repo.spring.io/snapshot" }
        maven { url "https://repo.spring.io/milestone" }
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'application'
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'

mainClassName = 'com.alpha.useragenda.UserAgendaApplication'

version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8

repositories {
    mavenCentral()
    maven { url "https://repo.spring.io/snapshot" }
    maven { url "https://repo.spring.io/milestone" }
}

dependencies {
    compile('org.springframework.boot:spring-boot-starter-data-jpa')
    compile('org.springframework.boot:spring-boot-starter-thymeleaf')
    compile('org.springframework.boot:spring-boot-starter-web')

    compile group: 'org.hsqldb', name: 'hsqldb', version: '2.0.0'
    compile group: 'org.postgresql', name: 'postgresql', version: '42.1.1'

    compile group: 'org.webjars', name: 'bootstrap', version: '3.3.7'
    compile group: 'org.webjars.bower', name: 'bootstrap-table', version: '1.11.1'
    compile('org.springframework.boot:spring-boot-devtools')
    testCompile('org.springframework.boot:spring-boot-starter-test')
}

tasks.withType(JavaCompile) {
    options.compilerArgs = ["-Xlint:unchecked", "-Xlint:deprecation", "-parameters"]
}

Answer 1

我认为你最好的选择就是使用这个

package stack.overflow;

import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.CrudRepository;

public interface UsersCrud extends CrudRepository<Users, Long> {

    //My other query prototypes here

    @Query("select c1 from t1")
    public Object customQuery();
}

通过这种方式，您可以轻松获得特殊查询。否则，我建议遵循OP评论中给出的建议（单独留下存储库并处理服务中的特殊情况

不满意的DependencyException在构造函数上自动装配并且设置不起作用

1 个答案: