获取无法解析引用本地ejb-ref未实现父接口

Question

我正在试图找出为什么我需要实现这两个接口以避免部署问题。

Java代码

ExamplePlanAssembler.java

@Local
public interface ExamplePlanAssembler {
   ExamplePlan toBO(ExamplePlanEntity entity);
}

ExtendedExamplePlanAssembler.java

@Local
public interface ExtendedExamplePlanAssembler 
extends ExamplePlanAssembler{
   ExtExamplePlan toBO(ExamplePlanEntity entity, ExtExamplePlanEntity extEntity);
}

ExtendedExamplePlanAssemblerImpl.java

@Stateless
public class ExtendedExamplePlanAssemblerImpl 
implements ExtendedExamplePlanAssembler {
   /* Method impls removed */
}

ExamplePlanServiceImpl.java

@Stateless
public class ExamplePlanServiceImpl 
implements ExamplePlanService {
   private ExamplePlanAssembler examplePlanAssembler ;
   @EJB
   public void setAssembler(ExamplePlanAssembler examplePlanAssembler) {
       this.examplePlanAssembler = examplePlanAssembler;
    }
}

部署错误

[#|.507-0500|SEVERE|gf3.1.2|javax.enterprise.system.tools.deployment.org.glassfish.deployment.common
|_ThreadID=83;_ThreadName=Thread-7;|Cannot resolve reference Local ejb-ref name=
com.myco.services.business.ExampleServiceImpl/examplePlanAssembler,Local 3.x interface =
com.myco.services.assembly.ExamplePlanAssembler,ejb-link=null,lookup=,mappedName=,jndi-name=,refType=Session|#]

[#|.508-0500|SEVERE|gf3.1.2|javax.enterprise.system.core.com.sun.enterprise.v3.server
|_ThreadID=83;_ThreadName=Thread-7;|Exception while deploying the app [mycoservicesear]|#]

[#|.508-0500|SEVERE|gf3.1.2|javax.enterprise.system.core.com.sun.enterprise.v3.server
|_ThreadID=83;_ThreadName=Thread-7;|Cannot resolve reference Local ejb-ref name=
com.myco.services.business.ExampleServiceImpl/examplePlanAssembler,Local 3.x interface =
com.myco.services.assembly.ExamplePlanAssembler,ejb-link=null,lookup=,mappedName=,jndi-name=,refType=Session
java.lang.RuntimeException: Cannot resolve reference Local ejb-ref name=
com.myco.services.business.ExampleServiceImpl/examplePlanAssembler,Local 3.x interface =
com.myco.services.assembly.ExamplePlanAssembler,ejb-link=null,lookup=,mappedName=,jndi-name=,refType=Session


[#|.516-0500|SEVERE|gf3.1.2|javax...gf.deployment.admin
|_ThreadID=83;_ThreadName=Thread-7;|Exception while deploying the app [mycoservicesear] : Cannot resolve reference Local ejb-ref name=
com.myco.services.business.ExampleServiceImpl/examplePlanAssembler,Local 3.x interface =
com.myco.services.assembly.ExamplePlanAssembler,ejb-link=null,lookup=,mappedName=,jndi-name=,refType=Session|#]

修复？！

如果我更改我的接口impl，不仅要实现ExtendedExamplePlanAssembler接口，还要实现父ExamplePlanAssembler接口，我的部署错误就会消失。

ExtendedExamplePlanAssemblerImpl.java（v2）

@Stateless
public class ExtendedExamplePlanAssemblerImpl 
implements ExtendedExamplePlanAssembler,  ExamplePlanAssembler{
   /* Method impls removed */
}

问题

为什么将父接口添加到我的implements声明解决部署问题？

Answer 1

EJB规则是这样说的，

作为示例，特定会话bean公开的客户端视图不会被子类继承 也恰好定义了会话bean。

@Stateless
public class A implements Foo { ... }
@Stateless
public class B extends A implements Bar { ... }

假设Foo和Bar是本地业务接口，并且没有关联的部署描述符， 会话bean公开本地业务接口Foo，会话bean B公开本地业务接口 吧，但不是Foo。

参考here。 EJB3.1规范的第4.9.2.1节

Answer 2

您无法扩展界面 我需要你尝试实现接口（你可以在同一个bean类中实现这两个接口） 但是现在你需要替换关键字＆＃34; extends＆＃34;用＆＃34;实现＆＃34;

@Local
public interface ExtendedExamplePlanAssembler 
 extends ExamplePlanAssembler{
  ExtExamplePlan toBO(ExamplePlanEntity entity, ExtExamplePlanEntity  extEntity);
}