java 带有限定符 @Default 的类型 EntityManager 的不满意依赖项
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时间：2020-11-02 07:35:43 来源:igfitidea点击:
Unsatisfied dependencies for type EntityManager with qualifiers @Default
提问by daydreamer
My project structure looks like
我的项目结构看起来像
project/
business/pom.xml
services/pom.xml
integration/pom.xml
business/pom.xml
业务/pom.xml
<dependencies>
<dependency>
<groupId>com.self</groupId>
<artifactId>persistence</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
</dependencies>
persistence/pom.xml
持久性/pom.xml
<dependencies>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>${hibernate-jpa-2.0-api.version}</version>
</dependency>
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-apt</artifactId>
<version>${querydsl-version}</version>
</dependency>
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-core</artifactId>
<version>${querydsl-version}</version>
</dependency>
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-jpa</artifactId>
<version>${querydsl-version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate-entitymanager.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>${h2.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
project/pom.xml
项目/pom.xml
<dependencies>
<dependency>
<groupId>com.google.code.findbugs</groupId>
<artifactId>jsr305</artifactId>
<version>${jsr305.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>${javaee-api.version}</version>
</dependency>
</dependencies>
business/ClientRegistrationManager.java
业务/ClientRegistrationManager.java
@Stateless
public class ClientRegistrationManager {
private EntityManager entityManager;
@SuppressWarnings("UnusedDeclaration")
public ClientRegistrationManager() {
}
@Inject
public ClientRegistrationManager(@Nonnull final EntityManager entityManager) {
this.entityManager = entityManager;
}
public ClientDetail register(@Nonnull final String email, final long id, @Nonnull final String password) {
final UserService userService = new UserService(entityManager);
final User user = userService.getUserByEmail(email);
return new ClientDetail("clientId", "clientSecret");
}
}
When I deploy, I see the following error
当我部署时，我看到以下错误
[INFO] [talledLocalContainer] 17:48:53,405 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-15) MSC000001: Failed to start service jboss.deployment.unit."application.war".WeldStartService: org.jboss.msc.service.StartException in service jboss.deployment.unit."application.war".WeldStartService: Failed to start service
[INFO] [talledLocalContainer] at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1904) [jboss-msc-1.2.0.Final.jar:1.2.0.Final]
[INFO] [talledLocalContainer] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_05]
[INFO] [talledLocalContainer] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_05]
[INFO] [talledLocalContainer] at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_05]
[INFO] [talledLocalContainer] Caused by: org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied dependencies for type EntityManager with qualifiers @Default
[INFO] [talledLocalContainer] at injection point [BackedAnnotatedParameter] Parameter 1 of [BackedAnnotatedConstructor] @Inject public com.self.oauth.business.oauth.ClientRegistrationManager(@Nonnull EntityManager)
[INFO] [talledLocalContainer] at com.self.oauth.business.oauth.ClientRegistrationManager.<init>(ClientRegistrationManager.java:0)
[INFO] [talledLocalContainer]
[INFO] [talledLocalContainer] at org.jboss.weld.bootstrap.Validator.validateInjectionPointForDeploymentProblems(Validator.java:368)
[INFO] [talledLocalContainer] at org.jboss.weld.bootstrap.Validator.validateInjectionPoint(Validator.java:289)
[INFO] [talledLocalContainer] at org.jboss.weld.bootstrap.Validator.validateGeneralBean(Validator.java:135)
[INFO] [talledLocalContainer] at org.jboss.weld.bootstrap.Validator.validateRIBean(Validator.java:166)
[INFO] [talledLocalContainer] at org.jboss.weld.bootstrap.Validator.validateBean(Validator.java:514)
[INFO] [talledLocalContainer] at org.jboss.weld.bootstrap.ConcurrentValidator.doWork(ConcurrentValidator.java:68)
[INFO] [talledLocalContainer] at org.jboss.weld.bootstrap.ConcurrentValidator.doWork(ConcurrentValidator.java:66)
[INFO] [talledLocalContainer] at org.jboss.weld.executor.IterativeWorkerTaskFactory.call(IterativeWorkerTaskFactory.java:60)
[INFO] [talledLocalContainer] at org.jboss.weld.executor.IterativeWorkerTaskFactory.call(IterativeWorkerTaskFactory.java:53)
[INFO] [talledLocalContainer] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [rt.jar:1.8.0_05]
[INFO] [talledLocalContainer] ... 3 more
[INFO] [talledLocalContainer]
[INFO] [talledLocalContainer] 17:48:53,411 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) JBAS014613: Operation ("deploy") failed - address: ([("deployment" => "application.war")]) - failure description: {"JBAS014671: Failed services" => {"jboss.deployment.unit.\"application.war\".WeldStartService" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"application.war\".WeldStartService: Failed to start service
[INFO] [talledLocalContainer] Caused by: org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied dependencies for type EntityManager with qualifiers @Default
[INFO] [talledLocalContainer] at injection point [BackedAnnotatedParameter] Parameter 1 of [BackedAnnotatedConstructor] @Inject public com.self.oauth.business.oauth.ClientRegistrationManager(@Nonnull EntityManager)
[INFO] [talledLocalContainer] at com.self.oauth.business.oauth.ClientRegistrationManager.<init>(ClientRegistrationManager.java:0)
[INFO] [talledLocalContainer] "}}
I also added empty beans.xmlat the following locations
我还在beans.xml以下位置添加了空
business/src/main/resources/META-INF/beans.xml
services/src/main/resources/META-INF/beans.xml
services/src/main/webapp/WEB-INF/beans.xml
But none of them helped
但他们都没有帮助
Can you please tell me what am I missing?
你能告诉我我错过了什么吗？
回答by maress
We normally inject EntityManager through '@PersistenceContext(unitname="name")' In order for you to use the constructor injection for the EntityManager, you would probably need to define a producer method.
我们通常通过 '@PersistenceContext(unitname="name")' 注入 EntityManager 为了让您使用 EntityManager 的构造函数注入，您可能需要定义一个生产者方法。
@Stateless
public class MyEntityManagerProducer{
@PersistenceContext(unitname="name")
private EntityManager entityManager;
@Produces
public EntityManager entityManager(){
return entityManager;
}
}
And then within your constructor injection:
然后在你的构造函数注入中：
@Inject
public ClientRegistrationManager(@Nonnull final EntityManager entityManager) {
this.entityManager = entityManager;
}
回答by John Ament
There is no default producer method for EntityManager. You need to create one to use @Inject.
没有默认的生产者方法EntityManager。您需要创建一个才能使用@Inject。
