double avprice="28234.2534";
java.text.DecimalFormat df =new java.text.DecimalFormat("#.00");
String aveprice=df.format(avprice);
q种写法是整数保留不变Q后面保?位小敎ͼ不则补0
在oracle里有旉要查询结果就保持格式
to_char(col_name,'99999D99')
q表C整C?位，数2位，如果?Ҏ0Q就是强制补0
]]>
数学函数Q?br /> 1.l对?
S:select abs(-1) value
O:select abs(-1) value from dual
2.取整(?
S:select ceiling(-1.001) value
O:select ceil(-1.001) value from dual
3.取整Q小Q?
S:select floor(-1.001) value
O:select floor(-1.001) value from dual
4.取整Q截取）
S:select cast(-1.002 as int) value
O:select trunc(-1.002) value from dual
5.四舍五入
S:select round(1.23456,4) value 1.23460
O:select round(1.23456,4) value from dual 1.2346
6.e为底的幂
S:select Exp(1) value 2.7182818284590451
O:select Exp(1) value from dual 2.71828182
7.取e为底的对?
S:select log(2.7182818284590451) value 1
O:select ln(2.7182818284590451) value from dual; 1
8.?0为底Ҏ
S:select log10(10) value 1
O:select log(10,10) value from dual; 1
9.取^?
S:select SQUARE(4) value 16
O:select power(4,2) value from dual 16
10.取^Ҏ
S:select SQRT(4) value 2
O:select SQRT(4) value from dual 2
11.求Q意数为底的幂
S:select power(3,4) value 81
O:select power(3,4) value from dual 81
12.取随机数
S:select rand() value
O:select sys.dbms_random.value(0,1) value from dual;
13.取符?
S:select sign(-8) value -1
O:select sign(-8) value from dual -1
14.圆周?
S:SELECT PI() value 3.1415926535897931
O:不知?
15.sin,cos,tan 参数都以弧度为单?
例如Qselect sin(PI()/2) value 得到1QSQLServerQ?
16.Asin,Acos,Atan,Atan2 q回弧度
17.弧度角度互换(SQLServerQOracle不知?
DEGREESQ弧?〉角?
RADIANSQ角?〉弧?
数值间比较Q?br /> 18. 求集合最大?
S:select max(value) value from
(select 1 value
union
select -2 value
union
select 4 value
union
select 3 value)a
O:select greatest(1,-2,4,3) value from dual
19. 求集合最?
S:select min(value) value from
(select 1 value
union
select -2 value
union
select 4 value
union
select 3 value)a
O:select least(1,-2,4,3) value from dual
20.如何处理null?F2中的null?0代替)
S:select F1,IsNull(F2,10) value from Tbl
O:select F1,nvl(F2,10) value from Tbl
21.求字W序?
S:select ascii('a') value
O:select ascii('a') value from dual
22.从序h字符
S:select char(97) value
O:select chr(97) value from dual
23.q接
S:select '11'+'22'+'33' value
O:select CONCAT('11','22') 33 value from dual
23.子串位置 --q回3
S:select CHARINDEX('s','sdsq',2) value
O:select INSTR('sdsq','s',2) value from dual
23.模糊子串的位|?--q回2,参数L中间%则返?
S:select patindex('%d%q%','sdsfasdqe') value
O:oracle没发玎ͼ但是instr可以通过W四个参数控制出现次?
select INSTR('sdsfasdqe','sd',1,2) value from dual q回6
24.求子?
S:select substring('abcd',2,2) value
O:select substr('abcd',2,2) value from dual
25.子串代替 q回aijklmnef
S:SELECT STUFF('abcdef', 2, 3, 'ijklmn') value
O:SELECT Replace('abcdef', 'bcd', 'ijklmn') value from dual
26.子串全部替换
S:没发?
O:select Translate('fasdbfasegas','fa','? ) value from dual
27.长度
S:len,datalength
O:length
28.大小写{?lower,upper
29.单词首字母大?
S:没发?
O:select INITCAP('abcd dsaf df') value from dual
30.左补I格QLPAD的第一个参CؓI格则同space函数Q?
S:select space(10)+'abcd' value
O:select LPAD('abcd',14) value from dual
31.双I格QRPAD的第一个参CؓI格则同space函数Q?
S:select 'abcd'+space(10) value
O:select RPAD('abcd',14) value from dual
32.删除I格
S:ltrim,rtrim
O:ltrim,rtrim,trim
33. 重复字符?
S:select REPLICATE('abcd',2) value
O:没发?
34.发音怼性比?q两个单词返回gP发音相同)
S:SELECT SOUNDEX ('Smith'), SOUNDEX ('Smythe')
O:SELECT SOUNDEX ('Smith'), SOUNDEX ('Smythe') from dual
SQLServer中用SELECT DIFFERENCE('Smithers', 'Smythers') 比较soundex的差
q回0-4Q?为同韻I1最?
日期函数Q?br /> 35.pȝ旉
S:select getdate() value
O:select sysdate value from dual
36.前后几日
直接与整数相加减
37.求日?
S:select convert(char(10),getdate(),20) value
O:select trunc(sysdate) value from dual
select to_char(sysdate,'yyyy-mm-dd') value from dual
38.求时?
S:select convert(char(8),getdate(),108) value
O:select to_char(sysdate,'hh24:mm:ss') value from dual
39.取日期时间的其他部分
S:DATEPART ?DATENAME 函数 Q第一个参数决定）
O:to_char函数 W二个参数决?
参数---------------------------------下表需要补?
year yy, yyyy
quarter qq, q (季度)
month mm, m (m O无效)
dayofyear dy, y (O表星?
day dd, d (d O无效)
week wk, ww (wk O无效)
weekday dw (O不清?
Hour hh,hh12,hh24 (hh12,hh24 S无效)
minute mi, n (n O无效)
second ss, s (s O无效)
millisecond ms (O无效)
----------------------------------------------
40.当月最后一?
S:不知?
O:select LAST_DAY(sysdate) value from dual
41.本星期的某一天（比如星期日）
S:不知?
O:SELECT Next_day(sysdate,7) vaule FROM DUAL;
42.字符串{旉
S:可以直接转或者select cast('2004-09-08'as datetime) value
O:SELECT To_date('2004-01-05 22:09:38','yyyy-mm-dd hh24-mi-ss') vaule FROM DUAL;
43.求两日期某一部分的差Q比如秒Q?
S:select datediff(ss,getdate(),getdate()+12.3) value
O:直接用两个日期相减（比如d1-d2=12.3Q?
SELECT (d1-d2)*24*60*60 vaule FROM DUAL;
44.Ҏ差值求新的日期Q比如分钟）
S:select dateadd(mi,8,getdate()) value
O:SELECT sysdate+8/60/24 vaule FROM DUAL;
45.求不同时区时?
S:不知?
O:SELECT New_time(sysdate,'ydt','gmt' ) vaule FROM DUAL;
-----时区参数,北京在东8区应该是Ydt-------
AST ADT 大西z标准时?
BST BDT 白oh准时?
CST CDT 中部标准旉
EST EDT 东部标准旉
GMT 格林治标准旉
HST HDT 阿拉斯加?夏威h准时?
MST MDT 山区标准旉
NST U芬兰标准时?
PST PDT 太^z标准时?
YST YDT YUKON标准旉
]]>
/**
* <p>Title: </p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2006</p>
*
* <p>Company: </p>
*
* @author not attributable
* @version 1.0
*/
public class TestConnect {
public TestConnect() {
}
static Connection con = null;
public static void main(String args[]) {
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
//String url="jdbc:odbc:Driver={Microsoft Access Driver(*.mdb)};DBQ=D://demo.mdb";
String url="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=D://demo.mdb";
//String url = "jdbc:odbc:Access";
con = DriverManager.getConnection(url,"","");
Statement stmt = con.createStatement();
String sql = "select * from base";
ResultSet rs = stmt.executeQuery(sql);
while (rs.next()) {
System.out.println("name= " + rs.getString(1));
}
rs.close();
stmt.close();
con.close();
//JakartaBasicDataSource.closeBasicDataSourceConnection();
}
catch (Exception e) {
e.printStackTrace();
System.out.println("now you have not ActiveConnection..........break!!");
}
}
}
]]>
String aveprice=df.format(avprice);
q种写法是整数保留不变Q后面保?位小敎ͼ不则补0
在oracle里有旉要查询结果就保持格式
to_char(col_name,'99999D99')
q表C整C?位，数2位，如果?Ҏ0Q就是强制补0
]]>
一. JMS?
1. JMS基本概念
JMS(Java Message Service)是访问企业消息系l的标准API,它便于消息系
l中的Java应用E序q行消息交换,q且通过提供标准的生、发送、接收消息的接口化企业应用的开发?
2. JMS基本功能
JMS是用于和面向消息的中间g怺通信的应用程序接口。它既支持点对点(point-to-point)的域Q又支持发布/订阅(publish/subscribe)cd的域Qƈ且提供对下列cd的支持：l认可的消息传?事务型消息的传递，一致性消息和h持久性的订阅者支持。JMSq提供了另一U方式来Ҏ的应用与旧的后台pȝ盔R成?
3. WebLogic JMS Server介绍
WebLogic Server8.1W合JAVA规范,q过Sun Microsystems J2EE 1.3?
?作ؓWebLogic的一部分,当然WebLogic JMS Server也完全遵从JMS规范,q支持集?q可以应用于实际企业pȝ.下图是WebLogic JMS Server体系l构.图中可以看到WebLogic JMS Server主要lg? WebLogic JMS servers(用于消息通信),Java客户?JNDI(用于域名查找), 后备存储(用于持久消息存储,Z文g或者JDBC数据?.
? WebLogic JMSҎ?
1. 消息通信模型
JMS 支持两种消息通信模型Q点到点Qpoint-to-pointQ（PTPQ模型和发布/订阅QPub/SubQ模型。除了下列不同之外，q两U消息通信模型非常地相|
PTP 模型规定了一个消息只能有一个接收?Pub/Sub 模型允许一个消息可以有多个接收者?
2. 消息l成
消息传递系l的中心是消息?
一?Message 分ؓ三个l成部分Q?
_headerQ是个标准字D集Q客h和供应商都用它来标识和\由消息?
属性（propertyQ支持把可选头字段d到消息。如果您的应用程序需要不使用标准头字D对消息~目和分c，您就可以d一个属性到消息以实现这个编目和分类。提?set<Type>Property(...) ?get<Type>Property(...) Ҏ以设|和获取各种 Java cd的属性，包括 Object。JMS 定义了一个供应商选择提供的标准属性集?
消息的主体（bodyQ包含要发送给接收应用E序的内宏V每个消息接口特定于它所支持的内容类型?
JMS Z同类型的内容提供了它们各自的消息cdQ但是所有消息都z?Message 接口?
StreamMessageQ包?Java 基本数值流Q用标准操作来序的填充和d?
MapMessageQ包含一l名/值对Q名UCؓ string cdQ而gؓ Java 的基本类型?
TextMessageQ包含一?String?
ObjectMessageQ包含一?Serializable Java 对象Q能使用 JDK 的集合类?
BytesMessageQ包含未解释字节? ~码M以匹配现存的消息格式?
XMLMessage: 包含XML内容。扩展TextMessage,XMLMessage cd的用，使得消息qo非常便利?
3. 消息认模式
非事务性会话中Q应用程序创建的会话? U确认模?而在事务性会话中Q确认模式被忽略?
五种认模式说明:
AUTO_ACKNOWLEDGEQ自动确认模式。一旦接收方应用E序的方法调用从处理消息处返回，会话对象׃认消息的接收?
CLIENT_ACKNOWLEDGEQ客L认模式。会话对象依赖于应用E序对被接收的消息调用一个acknowledge()Ҏ。一旦这个方法被调用Q会话会认最后一ơ确认之后所有接收到的消息。这U模式允许应用程序以一个调用来接收Q处理ƈ认一Ҏ息。注意：在管理控制台中，如果q接工厂的Acknowledge PolicyQ确认方针）属性被讄?Previous"Q提前）Q但是你希望Z个给定的会话认所有接收到的消息，那么q最后一条消息来调用acknowledge()Ҏ?
DUPS_OK_ACKNOWLEDGEQ允许副本的认模式。一旦接收方应用E序的方法调用从处理消息处返回，会话对象׃认消息的接Ӟ而且允许重复认。在需要考虑资源使用Ӟq种模式非常有效。注意：如果你的应用E序无法处理重复的消息的话，你应该避免用这U模式。如果发送消息的初始化尝试失败，那么重复的消息可以被重新发送?
NO_ACKNOWLEDGEQ不认模式。不认收到的消息是需要的。消息发送给一个NO_ACKNOWLEDGE 会话后，它们会被WebLogic 服务器立卛_除。在q种模式下，无法重新获得已接收的消息，而且可能D下面的结果：1. 消息可能丢失Q和Q或者）另一U情况：2. 如果发送消息的初始化尝试失败，会出现重复消息被发送的情况?
MULTICAST_NO_ACKNOWLEDGEQIPl播下的不确认模式，同样无需认。发送给一个MULTICAST_NO_ACKNOWLEDGE会话的消息， 会共享之前所q的NO_ACKNOWLEDGE 认模式一L特征。这U模式支持希望通过IP l播方式q行消息通信的应用程序，而且无需依赖会话认提供的服务质量。注意：如果你的应用E序无法处理消息的丢失或者重复，那么你应该避免用这U模式。如果发送消息的初始化尝试失败的话，重复的消息可能会被再ơ发送?
注：在上表的5 U确认模式中QAUTO_ACKNOWLEDGE QDUPS_OK_ACKNOWLEDGE ?
CLIENT_ACKNOWLEDGE 是JMS 规范定义的，NO_ACKNOWLEDGE 和MULTICAST_NO_ACKNOWLEDGE是WebLogic JMS 提供的?
? 配置JMS
1. 创徏q接工厂
(1) 启动WebLogic Server8.1,d控制?选中JMS Connection Factories节点,点击双? Configure a new JMS Connection Factory...";
(2) 填写q接工厂的名USendJMSFactory和JNDI名称SendJMSFactory,点击"Create";
(3) 勾上"myserver",SendJMSFactory应用到myserver;
2. 定义后备存储
(1) 选中JMS Stores节点,点击双? Configure a new JMS Connection Factory...";
(2) 填写文g后备存储的名USendFileStore和目录Directionary E:\BEA\user_projects\domains\mydomain\sendfilestore,点击"Create".
3. 创徏JMS服务?
(1) 选中JMS Servers节点,点击双? Configure a new JMSServer...";
(2) 填写JMS服务器的名称SendJMSServer和Paging Store设ؓ" SendFileStore",点击"Create";
(3) Target选中"myserver",SendJMSServer应用到myserver.
4. 创徏消息队列
(1) 展开"SendJMSServer"节点,点击" Configure a new JMS Queue...";
(2) 填写消息队列的名USendJMSQueue和JNDI名称SendJMSQueue,点击"Create";
? JMS应用E序
一?JMS 应用E序׃列元素组成：
JMS 客户机??JMS API 发送和接收消息?Java E序?
?JMSQNon-JMSQ客h?认识到这一点很重要 - 旧的E序l常成ؓ整个 JMS 应用E序的一部分Q而且它们的包含应该在设计旉先考虑?
消息??JMS 和非 JMS 客户Z间交换的消息的格式和内容?JMS 应用E序设计所必须考虑的部分?
JMS 供应商。供应商必须提供特定于其 MOM 产品的具体的实现?
受管对象?消息传递系l供应商的管理员创徏了一个对象，它独立于供应商专有的技术。包括连接工厂ConnectionFactory和目的Destination?
一U典型的 JMS E序需要经q下列步骤才能开始消息生和使用:
通过 JNDI 查找 ConnectionFactory?
通过 JNDI 查找一个或多个 Destination?
?ConnectionFactory 创徏一?Connection?
?Connection 创徏一个或多个 Session?
?Session ?Destination 创徏所需?MessageProducer ?MessageConsumer?
启动 Connection?
下面利用上面配置的JMS资源演示点对Ҏ息发送和接收的过E?
? 设计消息发送端
1. 使用的JMS资源
服务器URL: t3://localhost:80
q接工厂: SendJMSFactory
队列: SendJMSQueue
2. 设计步骤
初始化JNDI Tree
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
env.put(Context.PROVIDER_URL, PROVIDER_URL);
return new InitialContext(env);
lookup ConnectionFactory
qconFactory = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY);
lookup Destination
queue = (Queue) ctx.lookup(queueName);
?ConnectionFactory 创徏Connection
qcon = qconFactory.createQueueConnection();
?Connection 创徏一个Session
qsession = qcon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
?Session ?Destination 创徏MessageProducer
qsender = qsession.createSender(queue);
启动 Connection?
qcon.start();
发送消?
msg = qsession.createTextMessage();
msg.setText(message);
qsender.send(msg);
3. 源代?
package jmssample;
import java.util.Hashtable;
import javax.jms.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/** This example shows how to establish a connection
* and send messages to the JMS queue. The classes in this
* package operate on the same JMS queue. Run the classes together to
* witness messages being sent and received, and to browse the queue
* for messages. The class is used to send messages to the queue.
*
* @author Copyright (c) 1999-2003 by BEA Systems, Inc. All Rights Reserved.
*/
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:80";
// 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 {
InitialContext ic = getInitialContext();
QueueSend qs = new QueueSend();
qs.init(ic, QUEUE);
readAndSend(qs);
qs.close();
}
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);
}
}
? 设计消息接收?
1. 使用的JMS资源
服务器URL: t3://localhost:80
q接工厂: SendJMSFactory
队列: SendJMSQueue
2. 设计步骤
初始化JNDI Tree
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
env.put(Context.PROVIDER_URL, PROVIDER_URL);
return new InitialContext(env);
lookup ConnectionFactory
qconFactory = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY);
lookup Destination
queue = (Queue) ctx.lookup(queueName);
?ConnectionFactory 创徏Connection
qcon = qconFactory.createQueueConnection();
?Connection 创徏一个Session
qsession = qcon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
?Session ?Destination 创徏MessageConsumer
qreceiver = qsession.createReceiver(queue);
讄监听
qreceiver.setMessageListener(this);
启动 Connection
qcon.start();
3. 源代?
package jmssample;
import java.util.Hashtable;
import javax.jms.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.util.Hashtable;
import javax.jms.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
/**
* This example shows how to establish a connection to
* and receive messages from a JMS queue. The classes in this
* package operate on the same JMS queue. Run the classes together to
* witness messages being sent and received, and to browse the queue
* for messages. This class is used to receive and remove messages
* from the queue.
*
* @author Copyright (c) 1999-2003 by BEA Systems, Inc. All Rights Reserved.
*/
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:80";
// 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("quit")) {
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) {
while (! qr.quit) {
try {
qr.wait();
} 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);
}
}
? 试消息发送和接收
1. 讄WebLogic Classpath;
2. 转到发送接收程序目录编译文?
3. 执行接受E序;
4. 打开另一H口,执行发送程?
5. 输入发送消?quit",接收E序l束.
]]>
]]>
]]>