[英]Error with spring bean configuraion while trying to autowire class that usind Morphia with MongoDB
我有一個使用外觀的控制器,該外觀使用DAO以便將一些值保存到DB中,這是結構:
控制器:
@Controller
@RequestMapping("stores/Items")
@ContextConfiguration("classpath:application-context-core-production.xml")
public class ItemsController {
@Autowired
IItemsFacade itemsFacade;
}
正面:
@Service
public class ItemsFacade implements IItemsFacade {
@Autowired
ItemDAO itemDAO;
}
DAO:
@Repository
public class ItemDAO extends BasicDAO<Item, ObjectId> implements IItemDAO{
@Autowired
public ItemDAO(MongoClient mongoClient, Morphia morphia, String mongoDB) {
super(mongoClient, morphia, mongoDB);
}
}
應用程序上下文核心production.xml:
<context:component-scan base-package="com.salegroup.*" />
<!-- Setup Mongo and Morphia -->
<mongo:mongo host="localhost" port="27017" />
<bean class="java.lang.String" id="mongoDB">
<constructor-arg value="sale" />
</bean>
<bean class="com.mongodb.MongoClient" id="mongo" />
<bean class="org.mongodb.morphia.Morphia" id="morphia" />
<bean class="com.salegroup.persistence.dao.item.impl.ItemDAO" id="itemDAO">
<constructor-arg ref="mongo" index="0" />
<constructor-arg ref="morphia" index="1" />
<constructor-arg ref="mongoDB" index="2" />
</bean>
DAO應該連接到mongoDB,我正在使用xml配置以便創建MongoClient和Morfia。
嘗試在嵌入式tomcat服務器中運行時,出現以下錯誤:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'itemDAO' defined in file
[...\ItemDAO.class]: Unsatisfied dependency expressed through constructor argument with index 1 of type [org.mongodb.morphia.Morphia]: : No qualifying bean of type [org.mongodb.morphia.Morphia]
found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency.
Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.mongodb.morphia.Morphia] found for dependency:
expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:185) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1143) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1046) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
我錯過了什么? 必須說,以防萬一我要從外觀類中刪除一切正常(... dahhh ..)。
除此以外,這些測試也可以正常工作,而且我正在將有效的連接加入數據庫。
任何想法?
您的代碼中有兩個問題
@ContextConfiguration定義了類級別的元數據,用於確定如何加載和配置用於集成測試的ApplicationContext。 API
如果您在春季使用基於附件的配置,那么您將要做的是
在您的配置類(用@Configuration注釋的類)中,您可以像這樣注釋它
@Configuration @ImportResource("classpath:application-context-core-production.xml") public class AppConfig{...}
您從類ItemDAO中刪除了注釋@Repository和@Autowired
完全忘記xml配置,並在這樣的注釋中完成所有操作
@Configuration
@PropertySource("classpath:mongo.properties")
public class AppConfig{
// some methods ...
@Bean
public Mongo mongo(@Value("${mongo.host.addr}")String host,@Value("${mongo.host.port}")int port){
return new Mongo(host,port);
}
@Bean
public Morphia morphia(){
return new Morphia();
}
}
在您的存儲庫類中
@Repository
public class ItemDAO extends BasicDAO<Item, ObjectId> implements IItemDAO{
@Autowired
public ItemDAO(MongoClient mongoClient, Morphia morphia,@Value("${mongo.mongoDB}") String mongoDB) {
super(mongoClient, morphia, mongoDB);
}
}
在您的類路徑mongo.properties中
mongo.DB=sale
mongo.host.addr=localhost
mongo.host.port=27017
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