Java 没有一个bean可以注射到注射点
我正在尝试使用CDI将DAO注入到我的ManagedBean中 ManagedBean:Java 没有一个bean可以注射到注射点,java,dependency-injection,inversion-of-control,cdi,Java,Dependency Injection,Inversion Of Control,Cdi,我正在尝试使用CDI将DAO注入到我的ManagedBean中 ManagedBean: import java.io.Serializable; import javax.enterprise.context.RequestScoped; import javax.inject.Inject; import javax.inject.Named; import br.com.timbrasil.network.dao.ColaboradorDao; import br.com.timbra
import java.io.Serializable;
import javax.enterprise.context.RequestScoped;
import javax.inject.Inject;
import javax.inject.Named;
import br.com.timbrasil.network.dao.ColaboradorDao;
import br.com.timbrasil.network.modelo.Colaborador;
@SuppressWarnings("serial")
@Named
@RequestScoped
public class LoginBean implements Serializable{
private Colaborador colaborador = new Colaborador();
@Inject
private ColaboradorDao dao;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.context.RequestScoped;
import javax.enterprise.inject.Disposes;
import javax.enterprise.inject.Produces;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
@ApplicationScoped
public class JPAUtil {
private static EntityManagerFactory emf = Persistence
.createEntityManagerFactory("blueMonster");
@Produces
@RequestScoped
public EntityManager getEntityManager() {
return emf.createEntityManager();
}
public void close(@Disposes EntityManager manager) {
manager.close();
}
}
DAO
import java.io.Serializable;
import javax.enterprise.context.RequestScoped;
import javax.inject.Inject;
import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import br.com.timbrasil.network.modelo.Colaborador;
@SuppressWarnings("serial")
@RequestScoped
public class ColaboradorDao implements Serializable{
@Inject
private EntityManager manager;
public Colaborador buscaEmailESenha(Colaborador colaborador) {
String jqpl = "select c from Colaborador c where c.email = :pEmail and c.senha = :cSenha";
TypedQuery<Colaborador> query = this.manager.createQuery(jqpl, Colaborador.class);
query.setParameter("pEmail", colaborador.getEmail());
query.setParameter("pSenha", colaborador.getSenha());
colaborador = query.getSingleResult();
return colaborador;
}
}
Beans.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
version="1.1" bean-discovery-mode="annotated">
</beans>
当我尝试在WildFly上部署它时:
15:04:41,551 INFO [org.hibernate.Version] (ServerService Thread Pool -- 51) HHH000412: Hibernate Core {4.3.7.Final}
15:04:41,551 INFO [org.hibernate.cfg.Environment] (ServerService Thread Pool -- 51) HHH000206: hibernate.properties not found
15:04:41,551 INFO [org.hibernate.cfg.Environment] (ServerService Thread Pool -- 51) HHH000021: Bytecode provider name : javassist
15:04:41,676 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-6) MSC000001: Failed to start service jboss.deployment.unit."network.war".WeldStartService: org.jboss.msc.service.StartException in service jboss.deployment.unit."network.war".WeldStartService: Failed to start service
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1904) [jboss-msc-1.2.2.Final.jar:1.2.2.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.8.0_20]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.8.0_20]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.8.0_20]
Caused by: org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied dependencies for type ColaboradorDao with qualifiers @Default
at injection point [BackedAnnotatedField] @Inject private br.com.timbrasil.network.mb.LoginBean.dao
at br.com.timbrasil.network.mb.LoginBean.dao(LoginBean.java:0)
at org.jboss.weld.bootstrap.Validator.validateInjectionPointForDeploymentProblems(Validator.java:372)
at org.jboss.weld.bootstrap.Validator.validateInjectionPoint(Validator.java:293)
at org.jboss.weld.bootstrap.Validator.validateGeneralBean(Validator.java:134)
at org.jboss.weld.bootstrap.Validator.validateRIBean(Validator.java:167)
at org.jboss.weld.bootstrap.Validator.validateBean(Validator.java:531)
at org.jboss.weld.bootstrap.ConcurrentValidator$1.doWork(ConcurrentValidator.java:68)
at org.jboss.weld.bootstrap.ConcurrentValidator$1.doWork(ConcurrentValidator.java:66)
at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:60)
at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:53)
at java.util.concurrent.FutureTask.run(Unknown Source) [rt.jar:1.8.0_20]
... 3 more
我的项目中有beans.xml,只是为了让CDI工作
因为colaboradodao是属于我的类,所以我不必使用@products,对吗?
那么为什么CDI不知道该创建什么呢?
我怎样才能更正它呢?实际上也请澄清您的
beans.xml
的内容,您可能需要向dao类添加一个作用域
因为您使用的是带注释的,所以还需要在dao上提供一个作用域。它没有被拾取,因为它没有注释
@SuppressWarnings("serial")
@RequestScoped
public class ColaboradorDao implements Serializable{
然后它应该开始工作。用我正在使用的EM生产者和beans.xmlUsed#requestScope编辑了这篇文章,但仍然收到消息“不满意对类型colaboradodao的依赖关系,带有限定符”#default。我不认为其他人会有帮助。DoneI删除项目,服务器仍显示消息。。。我只需要下载一个新的WildFly实例。如果数据被卡住,你可能需要清除数据、tmp文件夹。
@SuppressWarnings("serial")
@RequestScoped
public class ColaboradorDao implements Serializable{