我有一个注入以下课程的资源
@Component
public class CustomDozerBeanMapper implements Mapper {
private final DozerBeanMapper beanMapper;
public CustomDozerBeanMapper() {
this.beanMapper = new DozerBeanMapper();
BeanMappingBuilder builder = new BeanMappingBuilder() {
protected void configure() {
//some mapping stuff
}
};
beanMapper.addMapping(builder);
}
@Override
public <T> T map(Object o, Class<T> aClass) throws MappingException {
return beanMapper.map(o, aClass);
}
@Override
public void map(Object o, Object o1) throws MappingException {
beanMapper.map(o, o1);
}
@Override
public <T> T map(Object o, Class<T> aClass, String s) throws MappingException {
return beanMapper.map(o, aClass, s);
}
@Override
public void map(Object o, Object o1, String s) throws MappingException {
beanMapper.map(o, o1, s);
}
}
在我的applicationContext.xml中,我已经声明
<context:annotation-config/>
<context:component-scan base-package="foo.bar"/>
<bean id="customDozerMapper" class="foo.bar.CustomDozerBeanMapper" />
然后在我们的资源中注入
class SomeResource {
@Inject CustomDozerMapper customDozerMapper;
//We have loads of other Injects which work just fine, only this class has problems
}
Caused by: A MultiException has 1 exceptions. They are:
1. org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=CustomDozerBeanMapper,parent=SomeResource,qualifiers={},position=-1,optional=false,self=false,unqualified=null,1098507248)
at org.jvnet.hk2.internal.ThreeThirtyResolver.resolve(ThreeThirtyResolver.java:75)
at org.jvnet.hk2.internal.Utilities.justInject(Utilities.java:947)
at org.jvnet.hk2.internal.ServiceLocatorImpl.inject(ServiceLocatorImpl.java:975)
at org.jvnet.hk2.internal.ServiceLocatorImpl.inject(ServiceLocatorImpl.java:965)
at org.glassfish.jersey.server.spring.SpringComponentProvider$SpringManagedBeanFactory.provide(SpringComponentProvider.java:191)
at org.jvnet.hk2.internal.FactoryCreator.create(FactoryCreator.java:153)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
at org.jvnet.hk2.internal.PerLookupContext.findOrCreate(PerLookupContext.java:70)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2072)
at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:761)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:700)
at org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:172)
at org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:284)
at org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:74)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:109)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
现在,如果我更改并使用@Autowired,它可以正常工作我们正在使用Spring进行依赖项管理,但是由于某些原因,正在使用h2k,并且出现以下异常
谁能解释一下可能是什么问题?
为什么使用@Autowired而不使用@Inject
为什么使用h2k,而不使用Spring?
可能的原因可能是由于2个bean声明(一个在XML配置中,另一个在中带有@Component
),并且DI容器无法选择其中的一个。
此处提供所有解决方案:
@Qualifier
或@Named
注释指定一个bean本文收集自互联网,转载请注明来源。
如有侵权,请联系 [email protected] 删除。
我来说两句