北京 也樂英語為了滿足廣大英語愛好者的需要特推出周末免費英語角服務,
北京英語角的組織形式如下:
1:由也樂英語派出一名外教和一名助理負責組織英語角的活動。
2: 英語角每周組織一次活動,也樂英語培訓學校提供一間教室為大家的活動場所。
3:英語愛好者可以免費參加英語角的活動,不收取任何費用,此活動是公益活動,也樂英
語不收取任何費用,也不限制參加次數。
4:也樂英語免費提供給英語愛好者茶水、咖啡、以及活動所采用的書籍報紙。
5:每周一到2個話題,由外教提前一周告訴大家,大家可以簡單準備,以便在課堂上
跟外教以及同學交流。
6:外教會糾正大家的發音、語法、詞匯上的錯誤,會形成一些總結,也希望大家能夠暢所
欲言,大膽的說英語。
7:所有參加英語角的愛好者,請您在交流期間把手機調為靜音。
也樂英語地址:北京豐臺區馬家堡西路15號 時代風帆大廈2區1901
交通狀況:地鐵四號線角門西站A口上樓即可。 51、501、54、529、698、646、707 嘉園
二里東門下車
聯系電話:010-58423871 15330275871
how to setup jacorb dev env
1:download JacORB_2_2
http://www.jacorb.org/download.html
download ant
http://ant.apache.org/bindownload.cgi
2:extact JacORB_2_2.jar to d:\JacORB_2_2
3:setup sys environment
set ANT_HOME=
set JAVA_HOME=
set JACORB_HOME=d:\JacORB_2_2
set PATH=%PATH%;%ANT_HOME%\bin;%JAVA_HOME%\bin;%JACORB_HOME%\bin;
set CLASSPAHT=.;%CLASSPAHT%;%ANT_HOME%\lib\ant.jar;%JACORB_HOME%\lib\jarorb.jar;%JACORB_HOME%\lib\idl.jar\;%JACORB_HOME%\lib\logkit-1.2.jar
4:rename %JACORB_HOME%\etc\jacorb_properties.template to %JACORB_HOME%\etc\jacorb.properties
and modify the 50th line to 53th line to
#ORBInitRef.NameService=file:/y:/nsiona.ref
ORBInitRef.NameService=file://d://test//NS_Ref
#ORBInitRef.NameService=http://www.x.y.z/~user/NS_Ref
#ORBInitRef.TradingService=http://www.x.y.z/~user/TraderRef
modify 618th line to
jacorb.naming.ior_filename=d://test//NS_Ref
5:rename %JACORB_HOME%\jacotemplate.bat to %JACORB_HOME%\jaco.bat
and modify related env variable
rename %JACORB_HOME%\idltemplate.bat to %JACORB_HOME%\idl.bat
and modify related env variable
6: use ant compile and build idl and java
cd %JACORB_HOME%\demo\grid
run ant
the generate class file in %JACORB_HOME%\classes and generated java file in %JACORB_HOME%\demo\grid
7: open a new cmd window:
cd %JACORB_HOME% ns
you can see the following result:
[ configuration jacorb loaded from file %JAORB_HOME%\etc\jacorb.properties]
open a new cmd window:
cd %JACORB_HOME% jaco demo.grid.Server
you can see the following result:
[ configuration jacorb loaded from file %JAORB_HOME%\etc\jacorb.properties]
open a new cmd window:
cd %JACORB_HOME% jaco demo.grid.client
you can see the following result:
[ configuration jacorb loaded from file D:\work\nj\JACORB\etc\jacorb.properties]
Height = 31
Width = 14
Old value at (30,13): 0.21
Setting (30,13) to 470.11
New value at (30,13): 470.11
MyException, reason: This is only a test exception, no harm done :-)
done.
|
由于一些原因,最近要復習一些東西,所以就把JMS的東西再復習一遍,以下便是例子
jms 中最重要的幾個概念destination,ACKNOWLEDGE,subscribe,durable subscribe
destination:topic queque
queue簡單點說就是1:1 一個消息只能由一個consumer去消費,別的consumer來消費的時候已經沒了,先到先得
topic簡單點說就是1:N 一個消息可以由多個consumer來消費,誰來消費都有
subscribe,拿topic來說如果當前訂閱不是持久訂閱,只有再訂閱后生產者生產得消息才能被consumer得到,持久訂閱只要沒有被consumer消費,早晚會消費這個消息
一下是幾個例子
queuesend:queque消息產生
queuereceive:queque消息得消費
topicsend :topic消息得產生
topicreceive1:topic消息的非訂閱
topicrecieve2:topic消息的持久訂閱
這個例子實在WEBLOGIC814上測試過的,當然要定義JMSSERVER,FACTORY,DESTINATION。
QueueSend
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Hashtable;
import javax.jms.JMSException;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class QueueSend {
// Defines the JNDI context factory.
public final static String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory";
// Defines the JNDI provider url.
public final static String PROVIDER_URL = " t3://localhost:7001";
// Defines the JMS connection factory for the queue.
public final static String JMS_FACTORY = "SendJMSFactory";
// Defines the queue.
public final static String QUEUE = "SendJMSQueue";
private QueueConnectionFactory qconFactory;
private QueueConnection qcon;
private QueueSession qsession;
private QueueSender qsender;
private Queue queue;
private TextMessage msg;
/**
* Creates all the necessary objects for sending messages to a JMS queue.
*
* @param ctx
* JNDI initial context
* @param queueName
* name of queue
* @exception NamingException
* if operation cannot be performed
* @exception JMSException
* if JMS fails to initialize due to internal error
*/
public void init(Context ctx, String queueName) throws NamingException,
JMSException {
qconFactory = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY);
qcon = qconFactory.createQueueConnection();
qsession = qcon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
queue = (Queue) ctx.lookup(queueName);
qsender = qsession.createSender(queue);
msg = qsession.createTextMessage();
qcon.start();
}
/**
* Sends a message to a JMS queue.
*
* @param message
* message to be sent
* @exception JMSException
* if JMS fails to send message due to internal error
*/
public void send(String message) throws JMSException {
msg.setText(message);
qsender.send(msg);
}
/**
* Closes JMS objects.
*
* @exception JMSException
* if JMS fails to close objects due to internal error
*/
public void close() throws JMSException {
qsender.close();
qsession.close();
qcon.close();
}
/**
* main() method.
*
* @param args
* WebLogic Server URL
* @exception Exception
* if operation fails
*/
public static void main(String[] args) throws Exception {
try {
InitialContext ic = getInitialContext();
QueueSend qs = new QueueSend();
qs.init(ic, QUEUE);
readAndSend(qs);
qs.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private static void readAndSend(QueueSend qs) throws IOException,
JMSException {
BufferedReader msgStream = new BufferedReader(new InputStreamReader(
System.in));
String line = null;
boolean quitNow = false;
do {
System.out.print("Enter message (\"quit\" to quit): ");
line = msgStream.readLine();
if (line != null && line.trim().length() != 0) {
qs.send(line);
System.out.println("JMS Message Sent: " + line + "\n");
quitNow = line.equalsIgnoreCase("quit");
}
} while (!quitNow);
}
private static InitialContext getInitialContext() throws NamingException {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
env.put(Context.PROVIDER_URL, PROVIDER_URL);
return new InitialContext(env);
}
}
QueueReceive
import java.util.Hashtable;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueReceiver;
import javax.jms.QueueSession;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class QueueReceive implements MessageListener {
// Defines the JNDI context factory.
public final static String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory";
// Defines the JNDI provider url.
public final static String PROVIDER_URL = " t3://localhost:7001";
// Defines the JMS connection factory for the queue.
public final static String JMS_FACTORY = "SendJMSFactory";
// Defines the queue.
public final static String QUEUE = "SendJMSQueue";
private QueueConnectionFactory qconFactory;
private QueueConnection qcon;
private QueueSession qsession;
private QueueReceiver qreceiver;
private Queue queue;
private boolean quit = false;
/**
* Message listener interface.
*
* @param msg
* message
*/
public void onMessage(Message msg) {
try {
String msgText;
if (msg instanceof TextMessage) {
msgText = ((TextMessage) msg).getText();
} else {
msgText = msg.toString();
}
System.out.println("Message Received: " + msgText);
// if (msgText.equalsIgnoreCase("123")) {
// synchronized (this) {
// quit = true;
// this.notifyAll(); // Notify main thread to quit
// }
// }
} catch (JMSException jmse) {
jmse.printStackTrace();
}
}
/**
* Creates all the necessary objects for receiving messages from a JMS
* queue.
*
* @param ctx
* JNDI initial context
* @param queueName
* name of queue
* @exception NamingException
* if operation cannot be performed
* @exception JMSException
* if JMS fails to initialize due to internal error
*/
public void init(Context ctx, String queueName) throws NamingException,
JMSException {
qconFactory = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY);
qcon = qconFactory.createQueueConnection();
qsession = qcon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
queue = (Queue) ctx.lookup(queueName);
qreceiver = qsession.createReceiver(queue);
qreceiver.setMessageListener(this);
qcon.start();
}
/**
* Closes JMS objects.
*
* @exception JMSException
* if JMS fails to close objects due to internal error
*/
public void close() throws JMSException {
qreceiver.close();
qsession.close();
qcon.close();
}
/**
* main() method.
*
* @param args
* WebLogic Server URL
* @exception Exception
* if execution fails
*/
public static void main(String[] args) throws Exception {
InitialContext ic = getInitialContext();
QueueReceive qr = new QueueReceive();
qr.init(ic, QUEUE);
System.out
.println("JMS Ready To Receive Messages (To quit, send a \"quit\" message).");
// Wait until a "quit" message has been received.
synchronized (qr) {
System.out.println("111111111111");
while (!qr.quit) {
try {
System.out.println("2222222222");
qr.wait();
System.out.println("333333333");
} catch (InterruptedException ie) {
}
}
}
qr.close();
}
private static InitialContext getInitialContext() throws NamingException {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
env.put(Context.PROVIDER_URL, PROVIDER_URL);
return new InitialContext(env);
}
}
TopicSend
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Hashtable;
import javax.jms.JMSException;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicSession;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.jms.TopicPublisher;
public class TopicSend {
// Defines the JNDI context factory.
public final static String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory";
// Defines the JNDI provider url.
public final static String PROVIDER_URL = " t3://localhost:7001";
// Defines the JMS connection factory for the queue.
public final static String JMS_FACTORY = "SendJMSFactory";
// Defines the queue.
public final static String TOPIC = "SendJMSTopic";
private TopicConnectionFactory tconFactory;
private TopicConnection tcon;
private TopicSession tsession;
private TopicPublisher tsender;
private Topic topic;
private TextMessage msg;
public static InitialContext ic ;
/**
* Creates all the necessary objects for sending messages to a JMS queue.
*
* @param ctx
* JNDI initial context
* @param queueName
* name of queue
* @exception NamingException
* if operation cannot be performed
* @exception JMSException
* if JMS fails to initialize due to internal error
*/
public void init(Context ctx, String queueName) throws NamingException,
JMSException {
tconFactory = (TopicConnectionFactory) ctx.lookup(JMS_FACTORY);
tcon = tconFactory.createTopicConnection();
tsession = tcon.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
System.out.println(topic);
topic = (Topic) ctx.lookup(queueName);
System.out.println(topic);
tsender = tsession.createPublisher(topic);
msg = tsession.createTextMessage();
tcon.start();
}
/**
* Sends a message to a JMS queue.
*
* @param message
* message to be sent
* @exception JMSException
* if JMS fails to send message due to internal error
*/
public void send(String message) throws JMSException ,NamingException{
System.out.println(topic+"-----------");
msg.setText(message);
tsender.publish(msg);
}
/**
* Closes JMS objects.
*
* @exception JMSException
* if JMS fails to close objects due to internal error
*/
public void close() throws JMSException {
tsender.close();
tsession.close();
tcon.close();
}
/**
* main() method.
*
* @param args
* WebLogic Server URL
* @exception Exception
* if operation fails
*/
public static void main(String[] args) throws Exception {
try {
ic= getInitialContext();
TopicSend ts = new TopicSend();
ts.init(ic, TOPIC);
readAndSend(ts);
ts.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private static void readAndSend(TopicSend ts) throws IOException,
JMSException,NamingException {
BufferedReader msgStream = new BufferedReader(new InputStreamReader(
System.in));
String line = null;
boolean quitNow = false;
do {
System.out.print("Enter message (\"quit\" to quit): ");
line = msgStream.readLine();
if (line != null && line.trim().length() != 0) {
ts.send(line);
System.out.println("JMS Message Sent: " + line + "\n");
quitNow = line.equalsIgnoreCase("quit");
}
} while (!quitNow);
}
private static InitialContext getInitialContext() throws NamingException {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
env.put(Context.PROVIDER_URL, PROVIDER_URL);
return new InitialContext(env);
}
}
TopicReceive1
import java.util.Hashtable;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicSession;
import javax.jms.TopicSubscriber;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class TopicReceive1 implements MessageListener {
// Defines the JNDI context factory.
public final static String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory";
// Defines the JNDI provider url.
public final static String PROVIDER_URL = " t3://localhost:7001";
// Defines the JMS connection factory for the queue.
public final static String JMS_FACTORY = "SendJMSFactory";
// Defines the queue.
public final static String TOPIC = "SendJMSTopic";
private TopicConnectionFactory tconFactory;
private TopicConnection tcon;
private TopicSession tsession;
private TopicSubscriber tsubscriber;
private Topic topic;
private boolean quit = false;
/**
* Message listener interface.
*
* @param msg
* message
*/
public void onMessage(Message msg) {
System.out.println("===================");
try {
String msgText;
if (msg instanceof TextMessage) {
msgText = ((TextMessage) msg).getText();
} else {
msgText = msg.toString();
}
System.out.println("Message Received: " + msgText);
// if (msgText.equalsIgnoreCase("123")) {
// synchronized (this) {
// quit = true;
// this.notifyAll(); // Notify main thread to quit
// }
// }
} catch (JMSException jmse) {
jmse.printStackTrace();
}
}
/**
* Creates all the necessary objects for receiving messages from a JMS
* queue.
*
* @param ctx
* JNDI initial context
* @param queueName
* name of queue
* @exception NamingException
* if operation cannot be performed
* @exception JMSException
* if JMS fails to initialize due to internal error
*/
public void init(Context ctx, String queueName) throws NamingException,
JMSException {
tconFactory = (TopicConnectionFactory) ctx.lookup(JMS_FACTORY);
tcon = tconFactory.createTopicConnection();
tsession = tcon.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
topic = (Topic) ctx.lookup(queueName);
tsubscriber = tsession.createSubscriber(topic);
//System.out.println("12");
//Message msg = treceiver.receive();
//msg.acknowledge();
//tsubscriber = tsession.createSubscriber(topic);Message msg = tsubscriber.receive();msg.acknowledge();
//System.out.println(msg);
tsubscriber.setMessageListener(this);
tcon.start();
}
/**
* Closes JMS objects.
*
* @exception JMSException
* if JMS fails to close objects due to internal error
*/
public void close() throws JMSException {
tsubscriber.close();
tsession.close();
tcon.close();
}
/**
* main() method.
*
* @param args
* WebLogic Server URL
* @exception Exception
* if execution fails
*/
public static void main(String[] args) throws Exception {
InitialContext ic = getInitialContext();
TopicReceive1 tr1 = new TopicReceive1();
tr1.init(ic, TOPIC);
System.out
.println("JMS Ready To Receive Messages (To quit, send a \"quit\" message).");
// Wait until a "quit" message has been received.
// synchronized (tr1) {
// System.out.println("111111111111");
// while (!tr1.quit) {
// try {
// System.out.println("2222222222");
// tr1.wait();
// System.out.println("333333333");
// } catch (InterruptedException ie) {
// }
// }
// }
tr1.close();
}
private static InitialContext getInitialContext() throws NamingException {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
env.put(Context.PROVIDER_URL, PROVIDER_URL);
return new InitialContext(env);
}
}
TopicReceive2
import java.util.Hashtable;
import javax.jms.JMSException;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicSession;
import javax.jms.TopicSubscriber;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class TopicReceive2 {
// Defines the JNDI context factory.
public final static String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory";
// Defines the JNDI provider url.
public final static String PROVIDER_URL = " t3://localhost:7001";
// Defines the JMS connection factory for the queue.
public final static String JMS_FACTORY = "SendJMSFactory";
// Defines the queue.
public final static String TOPIC = "SendJMSTopic";
private TopicConnectionFactory tconFactory;
private TopicConnection tcon;
private TopicSession tsession;
private TopicSubscriber tsubscriber;
private Topic topic;
private boolean quit = false;
/**
* Creates all the necessary objects for receiving messages from a JMS
* queue.
*
* @param ctx
* JNDI initial context
* @param queueName
* name of queue
* @exception NamingException
* if operation cannot be performed
* @exception JMSException
* if JMS fails to initialize due to internal error
*/
public void init(Context ctx, String queueName) throws NamingException,
JMSException,InterruptedException {
tconFactory = (TopicConnectionFactory) ctx.lookup(JMS_FACTORY);
tcon = tconFactory.createTopicConnection();
tcon.setClientID("IP10.200.7.104");
tcon.start();
tsession = tcon.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
System.out.println("333333333333");
topic = (Topic) ctx.lookup(queueName);
//tsubscriber = tsession.createSubscriber(topic);
tsubscriber= tsession.createDurableSubscriber(topic,"88888");
for (int i=0; i<3; i++) {
//
TextMessage message = (TextMessage) tsubscriber.receive();
System.out.println("message["+i+"]: " + message.getText());
}
Thread.sleep(10000);
//System.out.println("12");
//Message msg = treceiver.receive();
//msg.acknowledge();
//tsubscriber = tsession.createSubscriber(topic);Message msg = tsubscriber.receive();msg.acknowledge();
//System.out.println(msg);
}
/**
* Closes JMS objects.
*
* @exception JMSException
* if JMS fails to close objects due to internal error
*/
public void close() throws JMSException {
tsubscriber.close();
tsession.close();
tcon.close();
}
/**
* main() method.
*
* @param args
* WebLogic Server URL
* @exception Exception
* if execution fails
*/
public static void main(String[] args) throws Exception {
InitialContext ic = getInitialContext();
TopicReceive2 tr2 = new TopicReceive2();
tr2.init(ic, TOPIC);
System.out
.println("JMS Ready To Receive Messages (To quit, send a \"quit\" message).");
// Wait until a "quit" message has been received.
// synchronized (tr1) {
// System.out.println("111111111111");
// while (!tr1.quit) {
// try {
// System.out.println("2222222222");
// tr1.wait();
// System.out.println("333333333");
// } catch (InterruptedException ie) {
// }
// }
// }
tr2.close();
}
private static InitialContext getInitialContext() throws NamingException {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
env.put(Context.PROVIDER_URL, PROVIDER_URL);
return new InitialContext(env);
}
}