如何从远程客户端访问实体bean？(How to access entity beans from a remote client?)

如何从远程客户端访问实体bean？(How to access entity beans from a remote client?)

我在服务器中有这个：

class Person{...}

和

@Stateless public class HelloServiceBean implements HelloServiceLocal, HelloServiceRemote { public Person getPerson(String name) { return new Person(name); } }

我在我的客户端（在一些不同的JVM中）有这个：

public static void main(String[] a) throws Exception{ String name = "java2s"; HelloServiceRemote service = null; service = (HelloServiceRemote)new InitialContext().lookup("HelloServiceBean/remote"); Person p = service.getPerson(name)); }

当我需要从我的EJB调用getPerson（）方法时，它返回一个Person类型的对象，我的客户端将如何理解Person是一个类？

我是否必须在我的客户端（以及HelloServiceRemote类）中重新编写Person类，因此它可以理解什么是Person？ 或者我是否必须将Ejb项目包含到我的客户端项目中？

i have this in the server:

class Person{...}

and

@Stateless public class HelloServiceBean implements HelloServiceLocal, HelloServiceRemote { public Person getPerson(String name) { return new Person(name); } }

And i have this in my client (in some different JVM):

public static void main(String[] a) throws Exception{ String name = "java2s"; HelloServiceRemote service = null; service = (HelloServiceRemote)new InitialContext().lookup("HelloServiceBean/remote"); Person p = service.getPerson(name)); }

When i need to call, for example, getPerson() method from my EJB, which return an object of type of Person, how my client is going to understand that Person is a class ?

Do i have to re-write the Person class another time in my client (and also the HelloServiceRemote class), so it can understand what is a Person ? Or do i have to include the Ejb project into my client project ?

最满意答案

您必须在客户端包含jar项目，包含使用的接口，实体和其他实用程序类。

但是在客户端暴露实体Bean并不可取，您可以在http://www.ibm.com/developerworks/websphere/library/bestpractices/ejbs_access_entity_bean.html获取有关此内容的更多信息。

You have to include jar of EJB project at client side containing Interfaces, Entities & other utility classes used.

But exposing Entity Beans at client side is not preferable, you can get more information regarding this at http://www.ibm.com/developerworks/websphere/library/bestpractices/ejbs_access_entity_bean.html