小编wah*_*cse的帖子

我正在使用spring数据jpa,hibernate,mysql,tomcat7,maven开发应用程序,这就是创建错误.我想弄明白但是我失败了.

错误是在设置构造函数参数时无法解析对bean'entalManagerFactory'的引用; 没有定义名为'entityManagerFactory'的bean; 注入自动连接的依赖项失败

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'initDbService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.wahid.cse.repository.RoleRepository org.wahid.cse.service.InitDbService.roleRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleRepository': Cannot create inner bean '(inner bean)#c08f81' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#c08f81': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' …

我有三个实体：EntityA、EntityB 和 EntityC。我需要使用 spring data jpa 从这些实体中将连接查询的值获取到对象列表中。查询是：

select x.id,x.formNo,x.name, z.testScore, y.semester 
   from  EntityA as x left join EntityB as z on x.id = z.a_id 
    inner join EntityC as y on x.c_id = y.id where x.id=1

这些实体是：

实体A：

  @Entity
  public class EntityA {        
    @Id
    @GeneratedValue
    private Integer id;         
    private String name;        
    private String formNo;

    @OneToOne(mappedBy = "a",fetch=FetchType.LAZY, cascade = CascadeType.REMOVE)    
    private EntityB b;

    @ManyToOne
    @JoinColumn(name = "EntityC_id")
    private EntityC c;
}

实体B：

@Entity
public class EntityB {

@Id
@GeneratedValue
private Integer …

结果sql应该是:

"SELECT * FROM items where id LIKE '%"+ key + "%' or name LIKE '%"+ key + "%'";  

这里的键是变量.我需要在spring数据jpa中执行此sql.

我尝试如下,代码不起作用

@Transactional
public List<Item> findItemNameOrId(String key) {
    return  itemRepository.findByItemNameOrIdContaining(key);       
}

这是ItemRepository

public interface ItemRepository extends JpaRepository<Item, Integer> {

List<Item> findByItemNameOrIdContaining(String key);
}