Spring @Autowired - BeanCreationException

Question

当我试图在服务器上部署文件时，会发生错误。我很困惑，因为这段代码有效。

异常

    Failed to enable lec2ear-1.0.ear.

Unexpected HTTP response: 500

Request
{
    "address" => [("deployment" => "lecture_7")],
    "operation" => "deploy"
}

Response

Internal Server Error
{
    "outcome" => "failed",
    "failure-description" => {"JBAS014671: Failed services" => {"jboss.undertow.deployment.default-server.default-host./mart-parent" => "org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./mart-parent: Failed to start service
    Caused by: java.lang.RuntimeException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'storageController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ru.menkin.ea.lec4.model.services.ICategoryService ru.menkin.ea.lec5.controllers.StorageController._categoryService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'categoryService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ru.menkin.ea.lec4.model.repositories.CategoryRepository ru.menkin.ea.lec4.model.services.CategoryService.categoryRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'categoryRepository': Cannot resolve reference to bean 'jpaMappingContext' while setting bean property 'mappingContext'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is javax.persistence.PersistenceException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/recipeDs
Error Code: 0

ICategoryService

public interface ICategoryService
{
    public Category create(Category category);
    public Category delete(int id) throws Exception;
    public List<Category> findAll();
    public Category update(Category category) throws Exception;
    public Category findById(int id);
}

his实现

public class CategoryService implements ICategoryService
{
    @Autowired
    private CategoryRepository categoryRepository;
...

控制器

@Controller
@RequestMapping(value = "/rest")
public class StorageController extends BaseController {
    @Autowired
    @Qualifier("categoryService")
    private ICategoryService _categoryService;
...

database.xml

<djpa:repositories base-package="ru.menkin.ea.lec4.model" />

<bean id="categoryService" class="ru.menkin.ea.lec4.model.services.CategoryService" />

beans.xml

<context:annotation-config />
<context:component-scan base-package="ru.menkin.ea" />

我的错误在哪里？

Answer 1

下面是异常消息中的最后一个原因：

Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is javax.persistence.PersistenceException

Spring无法调用jpaMappingContext的init方法，因为出现了持久性异常--数据库中发生了错误。

因此，Spring自动装配实际上是工作的，但是它不能自动处理您的依赖关系，因为初始化一个spring时会发生数据库问题。

因此，数据库或数据库设置中的某些内容自该代码上次工作以来发生了变化。分析整个堆栈跟踪以找出此问题的根源--这是一个数据库问题。