用JNDI查找部署在JBOSS中的EJB對象並調用

使用環境

java1.5.0安裝在(JAVA_HOME)C:/Program Files/Java/ 

JBOSS4.0.2安裝在(JBOSS_HOME)C:/Program Files/jboss-4.0.2/

ANT1.6.2安裝在(ANT_HOME)C:/Program Files/apache-ant-1.6.2/

文件路徑

EjbDemo2(client(HelloClient.java);META-INF(ejb-jar.xml;jboss.xml);src(demo2(Hello.java;HelloLocal.java;HelloHome.java;HelloLocalHome.java.HelloBean.java));build.properties;build.xml;RunClient.bat)

使用的文件：

1.build.xml

 

<!-- ================ EjbDemo2 Create By IUnknown!2007.01.14 ================== -->
<project name="EjbDemo2" default="help" basedir=".">
<!-- ===================== Property Definitions =========================== -->
<property name="app.home"        value="." />
<property name="app.name"        value="EjbDemo2" />
<property name="src.home"        value="${app.home}/src" />
<property name="classes.home"        value="${app.home}/classes" />
<property name="deploy.home"        value="${app.home}/deploy" />
<property name="build.home"        value="${app.home}/build" />
<property name="metainf.home"        value="${app.home}/META-INF" />
<property name="buildmetainf.home"    value="${build.home}/META-INF" />
<property name="client.home"        value="${app.home}/client" />
<!-- ==================== Compilation Classpath =========================== -->
<property file="build.properties" />
<path id="compile.classpath">
  <pathelement location="${classes.home}"/>
  <fileset dir="${jboss.home}/lib">
    <include name="*.jar"/>
  </fileset>
  <fileset dir="${jboss.home}/client">
    <include name="*.jar" />
  </fileset>
</path>
<!-- ==================== "clean-all" Target ================================ -->
<target name="clean-all" >
  <delete dir="${classes.home}" />
  <delete dir="${deploy.home}" />
  <delete dir="${buildmetainf.home}" />
  <delete dir="${build.home}" />
  <delete dir="${jboss.home}/${app.name}" failonerror="false" />
  <delete dir="${jboss.home}/${app.name}.jar" />
</target>
<!-- ==================== "prepare" Target ================================ -->
<target name="perpare" depends="clean-all">
<mkdir dir="${classes.home}" />
<mkdir dir="${deploy.home}" />
<mkdir dir="${build.home}" />
<mkdir dir="${build.home}/META-INF" />
</target>
<!-- ==================== "compile" Target ================================ -->
<target name="compile" depends="perpare" >
  <javac srcdir="${src.home}" destdir="${classes.home}" debug="yes" >
    <classpath refid="compile.classpath" />
  </javac>
</target>
<!-- ==================== "build" Target ================================ -->
<target name="build" depends="compile">
  <copy todir="${build.home}" >
    <fileset dir="${classes.home}" />
  </copy>
  <copy todir="${client.home}" >
    <fileset dir="${classes.home}" />
  </copy>
  <copy todir="${buildmetainf.home}" >
    <fileset dir="${metainf.home}" />
  </copy>
  <jar jarfile="${deploy.home}/${app.name}.jar" basedir="${build.home}" />
</target>
<!-- ==================== "deploy" Target ================================ -->
<target name="deploy" depends="build">
  <copy todir="${webapps.home}" file="${deploy.home}/${app.name}.jar" />
</target>
<!-- ==================== "help" Target ================================ -->
<target name="help">
  <echo message="EjbDemo2 Create By IUnknown!2007.01.14" />
</target>
</project>

 

2.build.properties( 可以從環境變量中提取)

 

jboss.home=C:/Program Files/jboss-4.0.2
webapps.home=C:/Program Files/jboss-4.0.2/server/default/deploy

 

3.RunClient.bat

 

@echo off
echo ****************************
echo Run CallEjbDemo2 Client!
echo Create By IUnknown 
echo 2007.01.14
echo ****************************
cd client
SET CLASSPATH=%CLASSPATH%;%JBOSS_HOME%clientjbossall-client.jar
javac HelloClient.java
java HelloClient
cd ..

 

4./client/HelloClient.java

 

import demo2.HelloHome;
import demo2.Hello;

import javax.naming.Context;
import javax.naming.InitialContext;
import java.util.Hashtable;
import java.util.Properties;

public class HelloClient
...{
    public static void main(String[]args)
    ...{
        try ...{
            Hashtable env=new Hashtable();
            env.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
            env.put(Context.PROVIDER_URL, "localhost:1099");
            env.put("java.naming.factory.url.pkgs","org.jboss.naming:org.jnp.interfaces");
            Context ctx=new InitialContext(env);
            Object obj=ctx.lookup("HelloDemo2Bean");
            if(obj!=null)...{
                HelloHome Home=(HelloHome)javax.rmi.PortableRemoteObject.narrow(obj,HelloHome.class);
                Hello hello=Home.create();
                if(hello!=null)...{
                    System.out.println(hello.hello());
                }
            }
        } catch (javax.naming.NamingException e) ...{
            e.printStackTrace();
            System.out.println("Naming Exception.");
        } catch (javax.ejb.CreateException e) ...{
            e.printStackTrace();
            System.out.println("Create Ejb Exception.");
        } catch (java.rmi.RemoteException e) ...{
            e.printStackTrace();
            System.out.println("Remot Exception.");
        } catch(Exception e)...{
            System.out.print("Error!");
        }

    }
}

 

5./META-INF/ejb-jar.xml

 

<?xml version="1.0" encoding="UTF-8" ?>

<ejb-jar xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd" version="2.1">
    <enterprise-beans>
        <session>
            <ejb-name>HelloBean</ejb-name>
            <home>demo2.HelloHome</home>
            <remote>demo2.Hello</remote>
            <local-home>demo2.HelloLocalHome</local-home>
            <local>demo2.HelloLocal</local>
            <ejb-class>demo2.HelloBean</ejb-class>
            <session-type>Stateless</session-type>
            <transaction-type>Container</transaction-type>
        </session>
    </enterprise-beans>
</ejb-jar>

 

6./META-INF/jboss.xml

 

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.2//EN" "http://www.jboss.org/j2ee/dtd/jboss_3_2.dtd">
<jboss>
    <enterprise-beans>
        <session>
            <ejb-name>HelloBean</ejb-name>
            <jndi-name>HelloDemo2Bean</jndi-name>
        </session>
    </enterprise-beans>
</jboss>

 

7./src/demo2/Hello.java

 

//遠程接口
//by IUnknown
package demo2;

public interface Hello extends javax.ejb.EJBObject
...{
    public String hello()throws java.rmi.RemoteException;
}

 

8./src/demo2/HelloLocal.java

 

//本地接口
//By IUnknown
package demo2;
public interface HelloLocal extends javax.ejb.EJBLocalObject
...{
    public String hello();
}

 

9./src/demo2/HelloHome.java

 

//EJB對象工廠
//By IUnknown
package demo2;
public interface HelloHome extends javax.ejb.EJBHome
...{
    Hello create()throws java.rmi.RemoteException,javax.ejb.CreateException;
}

 

10./src/demo2/HelloLocalHome.java

 

//本地HOME接口
//By IUnknown
package demo2;
public interface HelloLocalHome extends javax.ejb.EJBLocalHome
...{
    HelloLocal create()throws javax.ejb.CreateException;
}

 

11./src/demo2/HelloBean.java

 

//Bean類
//By IUnknown
package demo2;
public class HelloBean implements javax.ejb.SessionBean
...{
    private javax.ejb.SessionContext  ctx;
    public void ejbCreate()
    ...{
        System.out.println("ejbCreate.");
    }
    public void ejbRemove()
    ...{
        System.out.println("ejbRemove");
    }
    public void ejbActivate()
    ...{
        System.out.println("ejbActivate");
    }
    public void ejbPassivate()
    ...{
        System.out.println("ejbPassivate");
    }
    public void setSessionContext(javax.ejb.SessionContext ctx)
    ...{
        this.ctx=ctx;
    }
    //
    public String hello()
    ...{
        System.out.println("hello");
        return "Hello,World!";
    }
}

 

 運行

ant deploy

RunClient.bat