?? secondejbbean.java
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package interejbs;import javax.ejb.*;import javax.naming.*;import java.util.Properties;import javax.rmi.PortableRemoteObject;public class secondEJBBean implements SessionBean { SessionContext sessionContext; private firstEJBHome firstEJBHomeObject = null; public void ejbCreate() throws CreateException { try { //得到名字上下文 Context ctx = getInitialContext(); //查詢jndi名 Object ref = ctx.lookup("firstEJB"); //通過強制轉型得到Home接口 firstEJBHomeObject = (firstEJBHome) PortableRemoteObject.narrow(ref, firstEJBHome.class); } catch(Exception e) { e.printStackTrace(); } } public void ejbRemove() { } public void ejbActivate() { } public void ejbPassivate() { } //這個函數返回一個經過初始化的上下文 private Context getInitialContext() throws Exception { String url = "t3://cgb-4wn01xj69v6:7001"; String user = null; String password = null; Properties properties = null; try { properties = new Properties(); properties.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory"); properties.put(Context.PROVIDER_URL, url); if (user != null) { properties.put(Context.SECURITY_PRINCIPAL, user); properties.put(Context.SECURITY_CREDENTIALS, password == null ? "" : password); } return new InitialContext(properties); } catch(Exception e) { throw e; } } public void setSessionContext(SessionContext sessionContext) { this.sessionContext = sessionContext; } //這個函數將被FirstEJB調用,同時它將調用secondEJB public String forFirst(String fromFirst) { try { firstEJB firstEJB=firstEJBHomeObject.create(); fromFirst=fromFirst+"This is secondEJB called by firstEJB\n"; fromFirst=firstEJB.forSecond(fromFirst); } catch(Exception e) { e.printStackTrace(); } return fromFirst; }}
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