EJB访问Weblogic用T3

package com.newmodern.etm.utility; /** * Title: * Description: * Copyright: Copyright (c) 2001 * Company: newmodern * @author Colin * @version 1.0 */ import java.util.*; import javax.naming.*; import javax.ejb.*; import javax.rmi.PortableRemoteObject; import javax.sql.*; import java.sql.*; public class EJBUtil { private static Context context = null; private static final String url = "t3://localhost:7001"; private static final String JDBC_JNDI = "jdbc/XAOracle"; public static Object getEJBHome(String lookupName, Class homeClass) { try { if (context==null) { context = getInitialContext(); } Object home = PortableRemoteObject.narrow( context.lookup(lookupName), homeClass); return home; } catch (NamingException ne) { throw new EJBException(ne.getMessage()); } } public static Connection getConnection(String lookupName) { try { if (context==null) { context = getInitialContext(); } DataSource ds = (DataSource)PortableRemoteObject.narrow( context.lookup(lookupName), DataSource.class); return ds.getConnection(); } catch (NamingException ne) { throw new EJBException(ne.getMessage()); } catch (SQLException e) { throw new EJBException(e.getMessage()); } } public static Connection getConnection() { try { if (context==null) { context = getInitialContext(); } DataSource ds = (DataSource)PortableRemoteObject.narrow( context.lookup(JDBC_JNDI), DataSource.class); return ds.getConnection(); } catch (NamingException ne) { throw new EJBException(ne.getMessage()); } catch (SQLException e) { throw new EJBException(e.getMessage()); } } private static Context getInitialContext() throws NamingException { try { Properties h = new Properties(); h.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory"); h.put(Context.PROVIDER_URL, url); return new InitialContext(h); } catch (NamingException ne) { throw ne; } } }

我们可以用下面方式调用该类： lookup找Home:

public void insertCategory(String codeSubscriber, String systemUsed, String codeCategory, String codeCategoryGroup, String categoryDesc, String actionBy, Timestamp newTimestamp) throws ETMDataAccessException, ETMDataAlreadyExistsException { try { CategoryHome home =(CategoryHome)EJBUtil.getEJBHome( "MyMasterCategory",CategoryHome.class); home.create(codeSubscriber, systemUsed, codeCategory, codeCategoryGroup, categoryDesc, actionBy, newTimestamp); } catch (DuplicateKeyException e) { throw new ETMDataAlreadyExistsException(); } catch (RemoteException e) { throw new ETMDataAccessException(e); } catch (CreateException e) { throw new ETMDataAccessException(e); } } String subscriberSql = "Select code_subscriber, subscriber_name " "From subscriber Where status = 'A' "; public Collection getSubscriberList() throws ETMDataAccessException { Connection con = null; PreparedStatement pStmt = null; ResultSet res = null; SubscriberEntity subscriber = null; Collection page = new ArrayList(); try { //getConnection(); con = EJBUtil.getConnection("jdbc/XAOracle"); pStmt = con.prepareStatement(subscriberSql); SystemLogger.getInstance().logDebug("SQL:" subscriberSql "<-START->"); res = pStmt.executeQuery(); SystemLogger.getInstance().logDebug("SQL:" subscriberSql "<-END->"); while (res.next()) { subscriber = new SubscriberEntity( res.getString("code_subscriber"), res.getString("subscriber_name")); page.add(subscriber); } } catch (SQLException e) { throw new ETMDataAccessException(e); } finally { if (res != null) { try { res.close(); } catch (Exception e) {} } if (pStmt != null) { try { pStmt.close(); } catch (Exception e) {} } if (con != null) { try { con.close(); con = null; } catch (Exception e) {} } } return page; }