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改变开发方式的 hbm+rmic

G_G — Mon, 24 Dec 2007 05:36:00 GMT

��Z��了解hbm的rmic真正的威力还有�ؓ了更�q�一步了解；在此特��用文本和dos命��o完成�q�次学习�?br />在此读者最好先做好不��?IDE 的准备（^_^! 文本�~�辑�Q�dos�~�辑和运行）
阅读需要：
java,javac,rmiregistry,rmic,ant �{�命令有所涉及�Q�只是简单��用，不会也别怕！�Q?/font>

可行性��用说明：
持久层程序员成功开启rmiregistry服务�Q�在局域网内其他��用数据的队友��只要加�?br />hbmBean 的映��jar�?dao接口jar�?��可以取得数据。根本感觉不到hbn使用�?br />优点�Q?br />1.其他队员�~�译classpath中不需要hbm的�Q何东西，跟关注自�׃��ѝ�?br />2.强制接口规范�?br />3.正交�~�程�?br />4.DAO��试性能方便�?br />5.�q�还�?EJB 原理�Q��{换容易�?br />
�~�点�Q?br />1.rmic �H�破攄��墙能力有限，可以换成EJB
2.大型��目注册服务器，配置�J�琐�Q�可以��用EJB3.0

使用:
1.jdk1.5
2.jar使用�Q��ؓ了用hbm�Q�    �?
jta.jar;
    asm.jar;
commons-collections-2.1.1.jar;
commons-logging-1.0.4.jar;
hibernate3.jar;
    dom4j-1.6.1.jar;
    cglib-2.1.3.jar;
antlr-2.7.5H3.jar
    MYSQL.jar
3.ant1.7(使用hbm生成 mapping;config...)
4.Middlegen-Hibernate-r5 同上
5.使用文�g路径
E:\rmi_test->
     +-src
     --hibernate3.xml
     --hibernate3_ant.properties

开始：
1>使用ant �?hbm 配置映射参�?�Q?/font>ant ��目实际 �q��?hibernate3.xml
    dos 输入 -> ant -f hibernate3.xml ddl2hbm (使用了Middlegen-Hibernate-r5)
             -> ant -f hibernate3.xml create_config (hibernate.cfg.xml建立)
    �?hibernate.cfg.xml中添�?>
    dos 输入 -> ant -f hibernate3.xml hbm2java
变成+-src
       |-hibernate
          |-Liu.hbm.xml
          |-Liu.java
       |-hbmConfig
          |-hibernate.cfg.xml
2>手动建hbmHibernateSessionFactory�?/font>hbmConfig文�g�?font color="#ffa500">(��Z��单copy->myeclipes生成�?

package   hbmConfig;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.cfg.Configuration;
/**
* Configures and provides access to Hibernate sessions, tied to the
* current thread of execution.  Follows the Thread Local Session
* pattern, see {@link http://hibernate.org/42.html}.
*/
public class HibernateSessionFactory {

    /**
     * Location of hibernate.cfg.xml file.
     * NOTICE: Location should be on the classpath as Hibernate uses
     * #resourceAsStream style lookup for its configuration file. That
     * is place the config file in a Java package - the default location
     * is the default Java package.

     * Examples:

     *

CONFIG_FILE_LOCATION = "/hibernate.conf.xml". 
     * CONFIG_FILE_LOCATION = "/com/foo/bar/myhiberstuff.conf.xml".

     */
    private static String CONFIG_FILE_LOCATION = "/hbmConfig/hibernate.cfg.xml";

    /** Holds a single instance of Session */
    private static final ThreadLocal<Session> threadLocal = new ThreadLocal<Session>();

    /** The single instance of hibernate configuration */
    private static final Configuration cfg = new Configuration();

    /** The single instance of hibernate SessionFactory */
    private static org.hibernate.SessionFactory sessionFactory;

    /**
     * Returns the ThreadLocal Session instance.  Lazy initialize
     * the SessionFactory if needed.
     *
     *  @return Session
     *  @throws HibernateException
     */
    public static Session currentSession() throws HibernateException {
        Session session = (Session) threadLocal.get();

        if (session == null) {
            if (sessionFactory == null) {
                try {
                    cfg.configure(CONFIG_FILE_LOCATION);
                    sessionFactory = cfg.buildSessionFactory();
                }
                catch (Exception e) {
                    System.err.println("%%%% Error Creating SessionFactory %%%%");
                    e.printStackTrace();
                }
            }
            session = sessionFactory.openSession();
            threadLocal.set(session);
        }

        return session;
    }

    /**
     *  Close the single hibernate session instance.
     *
     *  @throws HibernateException
     */
    public static void closeSession() throws HibernateException {
        Session session = (Session) threadLocal.get();
        threadLocal.set(null);

        if (session != null) {
            session.close();
        }
    }

    /**
     * Default constructor.
     */
    private HibernateSessionFactory() {
    }

}

dos中编�?>
E:\rmi_test\src>javac -cp .;D:\hbn\hibernate-3.2\hibernate-3.2.5.ga\hibernate-3.2\hibernate3.jar
hbmConfig/*.java

3>DAO实现
接口->

package rmic;

import java.rmi.Remote;
import java.rmi.RemoteException;

public interface IHello extends Remote {
public String sayHello(String id) throws RemoteException;
}

实现�c?>

package rmic;

import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
//取消昄��指定的编译器警告�Q?br />//参考： http://gceclub.sun.com.cn/Java_Docs/html/zh_CN/api/java/lang/SuppressWarnings.html
@SuppressWarnings("serial")
public class Hello extends UnicastRemoteObject implements IHello {
    public Hello() throws RemoteException {
        super();
    }

    public void rebind(String name) {
        try {
            Naming.rebind(name,this);
            System.out.println("Server is running");
        } catch(Exception e) {
            e.printStackTrace();
        }
    }
    public String sayHello(String id) throws RemoteException {
        System.out.println("run Server.");

    org.hibernate.Session session = hbmConfig.HibernateSessionFactory.currentSession();
    org.hibernate.Query qu = session.createQuery("from Liu lt where lt.id=:id");
    hibernate.Liu ll = (hibernate.Liu)qu.setString("id",id).uniqueResult();
    hbmConfig.HibernateSessionFactory.closeSession();

        return "Hello "+ll.getName()+" This is processed by RMI";
    }

}

dos�~�译->
E:\rmi_test\src>javac -cp .;D:\hbn\hibernate-3.2\hibernate-3.2.5.ga\hibernate-3.
2\hibernate3.jar rmic/*.java

4>java注册机开�?br />E:\rmi_test\src>rmiregistry 1099

5> 本例��单服务器开�?br />

package start;

import java.rmi.RMISecurityManager;
import rmic.Hello ;

public class Start {

    public static void main(String[] args) {
        try {
            //System.setSecurityManager(new RMISecurityManager());
            new Hello().rebind("RMI/Mclaren");
        } catch(Exception e) {
            e.printStackTrace();
        }
    }
}

dos�~�译->E:\rmi_test\src>javac start/*.java
�q�行->
java -classpath .;D:\hbn\hibernate-3.2\hibernate-3.2.5.ga\hibernate-3.2\lib\jta.jar;
D:\hbn\hibernate-3.2\hibernate-3.2.5.ga\hibernate-3.2\lib\asm.jar;
D:\hbn\hibernate-3.2\hibernate-3.2.5.ga\hibernate-3.2\lib\commons-collections-2.1.1.jar;
D:\hbn\hibernate-3.2\hibernate-3.2.5.ga\hibernate-3.2\lib\commons-logging-1.0.4.jar;
D:\hbn\hibernate-3.2\hibernate-3.2.5.ga\hibernate-3.2\hibernate3.jar;
D:\hbn\hibernate-3.2\hibernate-3.2.5.ga\hibernate-3.2\lib\dom4j-1.6.1.jar;
E:\lib\MYSQL.JAR;D:\hbn\hibernate-3.2\hibernate-3.2.5.ga\hibernate-3.2\lib\cglib-2.1.3.jar;
E:\and\ant\bin\antlr-2.7.5H3.jar
start.Start

6>客户�?br /> 得到存根Hello_Stub.class-> E:\rmi_test\src>rmic rmic.Hello
换个地方�Q�c:\\TT �q�copy rmic中的IHello.class和Hello_Stub.class�q�同目录rmic一同copy

package client;

import java.rmi.Naming;
import rmic.IHello;

public final class Client {
    public static void main(String[] args) {
        System.out.println("client.");
        try {
            IHello hello = (IHello)Naming.lookup("rmi://localhost:1099/RMI/Mclaren");
            System.out.println(hello.sayHello("1"));
        } catch(Exception e) {
            e.printStackTrace();
        }
    }

}

dos�~�译-> C:\TT>javac -d . Client.java
C:\TT>java client.Client
client....
Hello gg This is processed by RMI (gg��是数据成功�Q?)
mysql> select * from liu;
+----+------+-----+
| id | name | avg |
+----+------+-----+
| 1 | gg | 24 |
+----+------+-----+

G_G 2007-12-24 13:36 发表评论

跟我一�?-分离持久�?rmic)

G_G — Tue, 18 Dec 2007 09:47:00 GMT

学习了Rmic�?�Q�联�p�自己hbm的一些想法。�ƈ在实际开发中做到分离持久�?
在次�Q�特留记录。��用不当望大家�t�跃拍砖�Q?a id="viewpost1_TitleUrl" class="singleposttitle" href="/Good-Game/archive/2007/12/05/165530.html">EJB原理学习_RMIC

效果先上 �Q�你的组员，不需要数据库�Q�不需要hbm�Q�不需要配�|�文�Ӟ��
客户端：在服务器开�?�q�client端内classpath 包含�?*_Stub.class �?hbmBean�{�类(底下有ant��化部�|? 在内�|�中随便那台电脑都可以中�q�行,那台开发电�?font color="#a52a2a">可以没有hbm�Q�可以没有数据库

package Client;

import java.rmi.Naming;

import dao.ILiuDao;
import dao.LiuDaoRemote;
import dao.imp.DaoFactory;

public class Client {
    public static void main(String[] args) {
        try {
            ILiuDao hello = (ILiuDao)Naming.lookup("rmi://192.168.1.109:1099/RMI/LiuDaoRemote");
            System.out.println(hello.getLiu("1").getName());
      } catch(Exception e) {
            e.printStackTrace();
        }
    }
}

服务器端�Q?br />dao需求接口�?font color="#ffa500"> 其他队员提供�l�管理持久层的队�?/font>

package dao;

import java.rmi.Remote;
import java.rmi.RemoteException;

import hibernate.Customer;
import hibernate.Liu;

public interface ILiuDao extends Remote{
public abstract Liu getLiu(String id) throws RemoteException;
}

dao实现

package dao;

import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;

import org.hibernate.Query;
import org.hibernate.Session;

import hbmConfig.HibernateSessionFactory;
import hibernate.Customer;
import hibernate.Liu;

public class LiuDaoRemote extends UnicastRemoteObject implements ILiuDao {
    public LiuDaoRemote() throws RemoteException {
        super();
    }

    public Liu getLiu(String id)throws RemoteException{
        Liu ll =  null ;
        Session session = HibernateSessionFactory.currentSession();
        Query qu = session.createQuery("from Liu lt where lt.id=:id");
        ll = (Liu)qu.setString("id",id).uniqueResult();
        HibernateSessionFactory.closeSession();
        return ll ;
    }
}

使用ant�l�客��L��提供 jar

    <target name = "rmic">
        <rmic base="${class}" includes="${rmic.package}/**/*Remote.class"/>

        <jar destfile="${rh.dir}/rmic.jar">
            <fileset dir="${class}">
              <include name="${rmic.package}/**/*.class" />
              <exclude name="${rmic.package}/**/*Remote.class"/>
            fileset>
        jar>
        <jar destfile="${rh.dir}/hbmBean.jar" >
            <fileset dir="${class}">
              <include name="${hbm.bean.package}/**/*.class" />
            fileset>
        jar>
    target>

开启服务器�Q?br />

package test;

import java.rmi.Naming;
import java.rmi.RMISecurityManager;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;

import sun.awt.AppContext;

import dao.DaoFactoryRemote;
import dao.ILiuDao;
import dao.LiuDaoRemote;

import hibernate.Liu;

public class StartMain {

    public static void main(String[] args) throws Exception {
           try {
                System.setProperty("java.security.policy", "rmi.policy");
                LocateRegistry.createRegistry(1099);
                Naming.rebind("RMI/LiuDaoRemote", new LiuDaoRemote());
            } catch(Exception e) {
                e.printStackTrace();
            }
    }

}

G_G 2007-12-18 17:47 发表评论

EJB��例

G_G — Wed, 05 Dec 2007 08:01:00 GMT

在此特别感谢�Q�sql技术群�?☆蓝蓝心情★
谢谢在中午远�E�教�?EJB
原理参考：EJB原理学习_RMIC
�q�可能是我第一个EJB 和大家分享：
环境�Q?/strong>jboss+ejb+jdk5.0

需要jar�?/b>
注：Client�?Test.jar ��是 EJBTest(服务器打的包)

EJB�l��g�Q?br />接口

package org.test;

import javax.ejb.Remote;

//在我的EJB原理中介�l?br />//是可以被 rmic 的接�?/font>
@Remote
public interface IHello {
     public String sayHello(String name);
}

实现�c?/font>

package org.test;

import javax.ejb.Stateless;

import org.jboss.annotation.ejb.RemoteBinding;

@Stateless
//讄��q�程JNDI名字�Q�设�|�远�E�JNDI名字�Q�客��L��在通过JNDI lookup的时候，用的��是�q�个名字�Q?
//不同中间件的实现�Q�默认JNDI名字是不一��L��Q�所以不一定是***/Remote�?**/Local
//RemoteBinding�?jboss�Ҏ��?br />@RemoteBinding(jndiBinding = " MclarenEJB " )
public class Hello implements IHello {
     public String sayHello(String name) {
         return " Hello " + name;
    }
}

jdk�~�辑+打包成jar后热部��v�?font color="#a52a2a">%JBOSS_HOME%\server\default\deploy

客户端：

import java.util.Properties;

import javax.naming.Context;
import javax.naming.InitialContext;

import org.test.IHello;

public class Client {

     public static void main(String[] args) {
         try {
         Properties props = new Properties();
         props.put( " java.naming.factory.initial " , " org.jnp.interfaces.NamingContextFactory " );
         props.put( " java.naming.provider.url " , " jnp://localhost:1099 " );
         props.put( " java.naming.factory.url.pkgs " , " org.jboss.naming:org.jnp.interfaces " );

         Context context = new InitialContext(props);

         IHello h = (IHello) context.lookup( " MclarenEJB " );
         System.out.println(h.sayHello( " EJB 3.0 Test " ));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

�l�果是：
Hello EJB 3.0 Test

G_G 2007-12-05 16:01 发表评论

EJB原理学习_RMIC

G_G — Wed, 05 Dec 2007 07:39:00 GMT
EJB原理�Q�有�q�在 Q��上‘☆蓝蓝心情★�?得以一教；
特在�ơ郑重的道一�?谢谢�?大哥

在次我就分��n�l�大�Ӟ��本�h语言�l�织能力有限�Q?/font>说的不好可别怪我大哥啊。（呵呵�Q?br />
EJB技术对传输上进行封装，使程序员不需要关心太多网�l�问�?/font>。服务器都基于统一javabean操作�?
在这��是��Z�� rmic 命��o�Q�和 rmiregistry 端口来实现的�?br />rmic �?rmiregistry �q�些都在%JAVA_HOME%/bin下可以找到�?br />下面我就用大哥给写的一�D?没用EJB容器的代码来和大家分享EJB原理�Q?br />

1.rmic命��o介绍�Q?br />引用�Q��?http://www.iplab.cs.tsukuba.ac.jp/liuxj/jdk1.2/zh/docs/tooldocs/solaris/rmic.html
rmic �~�译器根据编译后�?Java �c�（含有�q�程对象实现�Q�名�Q��ؓ�q�程对象生成 stub �?skeleton�Q�远�E�对象是指实�?java.rmi.Remote 接口的对象）�?br />�?rmic 命��o中所�l�的�c�d��L��l?javac 命��o成功�~�译且是完全包限定的�c�R��例如，按如下所�C�对�c�L��件名 HelloImpl �q�行 rmic�Q?br />

2.EJB�l�徏�Q?font color="#a52a2a">服务器端�Q?/b>
接口�Q?/font>
package org.rmi.test;

import java.rmi.Remote;
import java.rmi.RemoteException;

public interface IHello extends Remote {
    public String sayHello(String name) throws RemoteException;
}

实现�c�：
package org.rmi.test;

import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
//取消昄��指定的编译器警告�Q?br />//参�?�Q?http://gceclub.sun.com.cn/Java_Docs/html/zh_CN/api/java/lang/SuppressWarnings.html
@SuppressWarnings("serial")
public class Hello extends UnicastRemoteObject implements IHello {
    public Hello() throws RemoteException {
        super();
    }

    public void rebind(String name) {
        try {
            Naming.rebind(name,this);
            System.out.println("Server is running");
        } catch(Exception e) {
            e.printStackTrace();
        }
    }
    public String sayHello(String name) throws RemoteException {
        return "Hello "+name+" This is processed by RMI";
    }

}

上面的��?java.rmi.Remote 和可序列化的感觉是一��L��Q�在�|�络中�{成流格式后，便与传输�?br /> 3. jdk1.5�~�译�?rmic �~�译�?/font> 1)javac ..... 2)rmic rmic org.rmi.test.Hello(后得�?Hello_Stub.class) 4.服务器开启：在项目根目录下加 rmi.policy grant {   Permission java.security.AllPermission "","connect,listen,accept"; }; 后运行： package org.rmi.test; import java.rmi.RMISecurityManager; public class Start {     public static void main(String[] args) {         try {             System.setSecurityManager(new RMISecurityManager());             //�q�里�q�不太明�?/font>             new Hello().rebind("RMI/Mclaren");         } catch(Exception e) {             e.printStackTrace();         }     } }5.开端口�Q?/font> rmiregistry 1099 �Q�开端口�Q?/tt> 客户端：�Q�另台电脑也可以了） import java.rmi.Naming; import org.rmi.test.IHello; public final class Client {     public static void main(String[] args) {         try {             IHello hello = (IHello)Naming.lookup("rmi://localhost:1099/RMI/Mclaren");             System.out.println(hello.sayHello("Mclaren"));         } catch(Exception e) {             e.printStackTrace();         }     } } �l�果是： Hello Mclaren This is processed by RMI G_G 2007-12-05 15:39 发表评论

亚洲欧洲第一a在线观看,亚洲理论片在线观看,亚洲三级在线视频

改变开发方式的 hbm+rmic

跟我一�?-分离持久�?rmic)

EJB���例

EJB原理学习_RMIC

EJB��例