#眉標=Oracle
#副標=Oracle 10g開發專題(11) 
#大標=建立、測試與部署EJB (上)
#作者=文／何致億

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程式1 MySessionEJB.java：
package demo;
import javax.ejb.EJBObject;

public interface MySessionEJB extends EJBObject  {
}

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程式2 MySessionEJBBean.java
package demo;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;

public class MySessionEJBBean 
    implements SessionBean  {
  public void ejbCreate() {
  }
  public void ejbActivate() {
  }
  public void ejbPassivate() {
  }
  public void ejbRemove() {
  }
  public void setSessionContext(
              SessionContext ctx) {
  }
}
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程式3 MySessionEJBHome.java：
package demo;
import javax.ejb.EJBHome;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
public interface MySessionEJBHome
       extends EJBHome  {
  MySessionEJB create() throws RemoteException,
                               CreateException;
}
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程式4 ejb-jar.xml：
<?xml version = '1.0' encoding = 'Big5'?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems,
   Inc.//DTD Enterprise JavaBeans 2.0//EN"
   "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
  <enterprise-beans>
    <session>
      <description>Session Bean ( Stateless )
      </description>
      <display-name>MySessionEJB</display-name>
      <ejb-name>MySessionEJB</ejb-name>
      <home>demo.MySessionEJBHome</home>
      <remote>demo.MySessionEJB</remote>
      <ejb-class>demo.MySessionEJBBean
      </ejb-class>
      <session-type>Stateless</session-type>
      <transaction-type>Container
      </transaction-type>
    </session>
  </enterprise-beans>
  <assembly-descriptor>
    <container-transaction>
      <method>
        <ejb-name>MySessionEJB</ejb-name>
        <method-name>*</method-name>
      </method>
      <trans-attribute>Required
      </trans-attribute>
    </container-transaction>
  </assembly-descriptor>
</ejb-jar>
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程式5 orion-ejb-jar.xml：
<?xml version = '1.0' encoding = 'Big5'?>
<!DOCTYPE orion-ejb-jar PUBLIC "-//Evermind//DTD
       Enterprise JavaBeans 1.1 runtime//EN"
 "http://xmlns.oracle.com/ias/dtds/orion-ejb-jar.dtd">
<orion-ejb-jar>
  <enterprise-beans>
    <session-deployment name="MySessionEJB"/>
  </enterprise-beans>
</orion-ejb-jar>
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public String SayHello(String person) {
  return null;
}
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public String SayHello(String person)  {
  return “Hello, “ + person;
}
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String SayHello(String person) throws RemoteException;
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// mySessionEJB.SayHello( java.lang.String person );
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System.out.println( mySessionEJB.Hello(“Rich”) );
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程式6
package demo;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import ejbdemo.MySessionEJB;
import ejbdemo.MySessionEJBHome;
import javax.naming.NamingException;

public class MySessionEJBClient  {
  public static void main(String [] args) {
    MySessionEJBClient mySessionEJBClient =
         new MySessionEJBClient();
    try {
      Context context = getInitialContext();
      MySessionEJBHome mySessionEJBHome =
         (MySessionEJBHome) PortableRemoteObject.narrow(
           context.lookup("MySessionEJB"),
                          MySessionEJBHome.class);
      MySessionEJB mySessionEJB;

      // Use one of the create() methods below 
      // to create a new instance
        ============以下為粗體字==========
   mySessionEJB = mySessionEJBHome.create();
        ============以上為粗體字==========
      // Call any of the Remote methods below
      // to access the EJB
           ============以下為粗體字==========
System.out.println( mySessionEJB.SayHello("Rich")); 
============以上為粗體字==========
    } catch(Throwable ex) {
      ex.printStackTrace();
    }
  }

  private static Context getInitialContext()
                         throws NamingException {
    // Get InitialContext for Embedded OC4J.
    // The embedded server must be running
    //for lookups to succeed.
    return new InitialContext();
  }
}
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程式7 
<?xml version = '1.0' encoding = 'UTF-8'?>
<ejb-deployment nselem="ejb-deployment" 
 class="oracle.jdeveloper.deploy.ejb.EjbProfile" 
 xmlns="http://xmlns.oracle.com/jdeveloper/9051/
   deploy/j2ee-ejb-jar">
   <archiveOptions>
      <additionalManifests/>
      <compressed>false</compressed>
      <hasManifest>true</hasManifest>
      <mainClass/>
   </archiveOptions>
   <defaultConnection/>
   <deployClientMaxHeapSize/>
   <earURL path="deploy/MySessionEJB.ear"/>
   <enterpriseAppName>MySessionEJB</enterpriseAppName>
   <fileGroups>
     <groups>
      <Item 
         class= "oracle.jdeveloper.deploy.common.PackagingFileGroup"
         internalName="project-output">
            <contributors>
               <Item type="2"/>
               <Item type="7"/>
            </contributors>
            <displayName>Project Output</displayName>
            <filters>
               <rules>
                  <Item type="1" pattern="**/CVS/"/>
                  <Item type="1" pattern="**.cdi"/>
                  <Item type="1" pattern="**.contrib"/>
                  <Item type="1" pattern="**.keep"/>
                  <Item type="1" pattern="**.rvi"/>
                  <Item type="1" pattern=".jsps/"/>
                  <Item type="0" pattern="**"/>
               </rules>
            </filters>
            <targetWithinJar/>
         </Item>
     </groups>
   </fileGroups>
   <jarURL path="deploy/MySessionEJB.jar"/>
   <profileDeps/>
   <properties/>
</ejb-deployment>
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<enterpriseAppName>MyFirstEJB</enterpriseAppName>
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System.out.println("Calling MySessionEJB.SayHello()
                     on Standalone OC4J.");
System.out.println(mySessionEJB.SayHello("Rich"));
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程式8
package demo;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import ejbdemo.MySessionEJB;
import ejbdemo.MySessionEJBHome;
import javax.naming.NamingException;
import java.util.Hashtable;

public class MySessionEJBClient1  {
  public static void main(String [] args) {
    MySessionEJBClient1 mySessionEJBClient1 
             = new MySessionEJBClient1();
    try {
      Context context = getInitialContext();
      MySessionEJBHome mySessionEJBHome =  
       (MySessionEJBHome)PortableRemoteObject.narrow(
         context.lookup("MySessionEJB"),
         MySessionEJBHome.class);
      MySessionEJB mySessionEJB;

      // Use one of the create() methods below 
      // to create a new instance
      mySessionEJB = mySessionEJBHome.create();

      // Call any of the Remote methods below
      //  to access the EJB
     ============以下為粗體字==========
System.out.println("Calling MySessionEJB.SayHello()" + 
                         " on Standalone OC4J.");
      System.out.println(mySessionEJB.SayHello("Rich"));
     ============以上為粗體字==========
    } catch(Throwable ex) {
      ex.printStackTrace();
    }
  }

  private static Context getInitialContext()
          throws NamingException {
    Hashtable env = new Hashtable();
    // Standalone OC4J connection details
    env.put(Context.INITIAL_CONTEXT_FACTORY, 
      "com.evermind.server.rmi.RMIInitialContextFactory");
    env.put(Context.SECURITY_PRINCIPAL, "admin");
    env.put(Context.SECURITY_CREDENTIALS, "admin");
    env.put(Context.PROVIDER_URL, "ormi://Rich/MySessionEJB");

    return new InitialContext(env);
  }
}
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Calling MySessionEJB.SayHello() on Standalone OC4J.
Hello, Rich
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