Question

我在查找服务器上托管的EJB时遇到问题。服务器本身是一个SAP环境，基本上是一个修改过的tomcat。

我尝试了几个以

开头的查找字符串

java:comp/env/

和

ejb:/

但没有任何作用。

这是服务器对lookupstrings的说法：

ejb:/appName=mycompany.de/reboard~report~cs, jarName=mycompany.de~reboard~report~cs.jar, beanName=com.sap.bpem.facade.api._simplified.adapted.BPMFacadeBeanSimplifiedEjb, interfaceName=com.sap.bpem.facade.api._simplified.adapted.BPMFacadeBeanSimplifiedLocal

和远程部分：

ejb:/appName=mycompany.de/reboard~report~cs, jarName=mycompany.de~reboard~report~cs.jar, beanName=com.sap.bpem.facade.api._simplified.adapted.BPMFacadeBeanSimplifiedEjb, interfaceName=com.sap.bpem.facade.api._simplified.adapted.BPMFacadeBeanSimplifiedRemote

我尝试了不同的查找字符串组合，但都失败了。我可以使用以下代码将Proxy对象获取到Bean：

InitialContext().lookup("ejb:/com.sap.bpem.facade.api._simplified.adapted.BPMFacadeBeanSimplifiedLocal");

但我需要的是直接bean访问。

以下是Bean的定义方式：

@com.sap.engine.services.webservices.espbase.configuration.ann.rt.TransportBindingRT(AltPath="reboard/report/cs~ibsolution.de_com.sap.bpem.facade.api._simplified.adapted.BPMFacadeBeanSimplifiedEjb")
@UsedReferences(srIds="05bc3ba3-fd85-4381-b6f8-f8a4734b2815, 05bc3ba3-fd85-4381-b6f8-f8a4734b2815, 05bc3ba3-fd85-4381-b6f8-f8a4734b2815", wsdlLocations="ibsolution.de~reboard~report~cs.jar#META-INF/wsdl/consumed/src/wsdl/rootwsdl_BPMFacadeBeanImplService_BPMFacadeBeanImpl.wsdl, ibsolution.de~reboard~report~cs.jar#META-INF/wsdl/consumed/src/wsdl/rootwsdl_BPMFacadeBeanImplService_BPMFacadeBeanImpl.wsdl, ibsolution.de~reboard~report~cs.jar#META-INF/wsdl/consumed/src/wsdl/rootwsdl_BPMFacadeBeanImplService_BPMFacadeBeanImpl.wsdl")
@Stateless(name="com.sap.bpem.facade.api._simplified.adapted.BPMFacadeBeanSimplifiedEjb")
@EJB(name="BPMBean", beanInterface=BPMFacadeBeanSimplifiedLocal.class)
@WebService(
    portName="BPMFacadeBean_simplifiedBindingPort",
    endpointInterface="com.sap.bpem.facade.api._simplified.BPMFacadeBeanSimplified",
    serviceName="BPMFacadeBean_simplifiedBindingService",
    targetNamespace="http://api.facade.bpem.sap.com/_simplified",
    wsdlLocation="META-INF/wsdl/composed/src/wsdl/rootwsdl_importedwsdl_1_BPMFacadeBeanImplService_BPMFacadeBeanImpl_simplified.wsdl")
public class BPMFacadeBeanSimplifiedEjb implements 
    BPMFacadeBeanSimplifiedLocal,
    BPMFacadeBeanSimplifiedRemote

本地界面：

@Local
public interface BPMFacadeBeanSimplifiedLocal
    extends com.sap.bpem.facade.api._simplified.BPMFacadeBeanSimplified {}

远程接口：

@Remote
public interface BPMFacadeBeanSimplifiedRemote
    extends com.sap.bpem.facade.api._simplified.BPMFacadeBeanSimplified {}

BPMFacadeBeanSimplified Interface：

@javax.jws.WebService(name = "BPMFacadeBean_simplified", targetNamespace = "http://api.facade.bpem.sap.com/_simplified")
@javax.jws.soap.SOAPBinding(parameterStyle = javax.jws.soap.SOAPBinding.ParameterStyle.WRAPPED, style = javax.jws.soap.SOAPBinding.Style.DOCUMENT, use = javax.jws.soap.SOAPBinding.Use.LITERAL)
public interface BPMFacadeBeanSimplified {

@javax.jws.WebMethod(operationName = "getActiveProcesses", action = "http://api.facade.bpem.sap.com/_simplified/getActiveProcesses")
@javax.xml.ws.RequestWrapper(localName = "getActiveProcesses", targetNamespace = "http://api.facade.bpem.sap.com/", className = "com.sap.bpem.facade.api.GetActiveProcesses")
@javax.xml.ws.ResponseWrapper(localName = "getActiveProcessesResponse", targetNamespace = "http://api.facade.bpem.sap.com/", className = "com.sap.bpem.facade.api.GetActiveProcessesResponse")
@javax.jws.WebResult(name = "return", targetNamespace = "")
public java.util.List<com.sap.bpem.facade.api.ProcessInfo> getActiveProcesses(@javax.jws.WebParam(name = "locale", targetNamespace = "") java.lang.String locale);

/**
 * Java representation of web method [getProcessDescription].
 */
@javax.jws.WebMethod(operationName = "getProcessDescription", action = "http://api.facade.bpem.sap.com/_simplified/getProcessDescription")
@javax.xml.ws.RequestWrapper(localName = "getProcessDescription", targetNamespace = "http://api.facade.bpem.sap.com/", className = "com.sap.bpem.facade.api.GetProcessDescription")
@javax.xml.ws.ResponseWrapper(localName = "getProcessDescriptionResponse", targetNamespace = "http://api.facade.bpem.sap.com/", className = "com.sap.bpem.facade.api.GetProcessDescriptionResponse")
@javax.jws.WebResult(name = "return", targetNamespace = "")
public java.lang.String getProcessDescription(@javax.jws.WebParam(name = "activeVersionId", targetNamespace = "") java.lang.String activeVersionId, @javax.jws.WebParam(name = "locale", targetNamespace = "") java.lang.String locale);

}

在这种情况下，正确的查找字符串是什么？

感谢您的帮助！

Answer 1

没有可移植的方式来访问bean实例，所有对ejb的访问都应该通过代理，因为这是容器可以提供它应该为你提供的所有服务的唯一方式（拦截器，依赖注入，安全性，事务......），这就是EJB规范的设计方式，来自EJB 3.0规范（第4.7.3节）：

容器的会话业务接口的实现，它由部署生成工具，实现特定于会话bean的业务方法。每个业务方法的实现必须激活实例（如果实例处于被动状态 state），调用任何业务方法拦截器方法，并调用匹配的业务方法实例。容器提供程序负责提供equals和hashCode的实现业务接口的方法，符合第3.6.5节的要求

此外，我无法想象你为什么需要直接访问bean实例

使用InitialContext进行EJB查找

1 个答案: