今天在做MQ的一个例子程序的时候,遇到了CCSID问题,还好弄了半天终于搞定了 :)
今天把MQ文档中的例子拿来做了一下,在调试的过程中遇到了CCSID问题。
下面先把程序总体思路说一下,软硬件的环境是:我使用一台PC机做服务器,并在这台机器上安装WebSphere MQ的服务器。然后把另外一台PC机作为客户端,并且在这台机器上安装WebSphere MQ的Windows 版客户端。服务器端的操作系统是Windows 2000 Professional,客户端是Windows XP。
我做的这个例子是通过客户端的方式来向服务器传递消息。服务器上的MQ中的参数为:
hostname:neu
MQM name: QM_guo
Channel name:ch_server
Q name:Q_guo
PtpSender.java(用于向服务器端传递消息) PtpReceiver.java(用于从服务器端得到消息)
程序代码如下:

/**//*
* Created on 2005-1-18
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/

/** *//**
* @author Ralph
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
import com.ibm.mq.*;
public class PtpSender ...{

public static void main(String[] args) ...{
try...{
String hostName="neu";
String channel="ch_server";
String qManager="QM_guo";
String qName="Q_guo";
//set up the MQEnvironment properties for the client
MQEnvironment.hostname=hostName;
MQEnvironment.channel=channel;
MQEnvironment.properties.put(MQC.TRANSPORT_PROPERTY,MQC.TRANSPORT_MQSERIES);
MQEnvironment.CCSID=1381;
//connetion to Q Manager
MQQueueManager qMgr=new MQQueueManager(qManager);
//set up the open options
int openOptions=MQC.MQOO_OUTPUT|MQC.MQOO_FAIL_IF_QUIESCING;
//open the Q
MQQueue queue=qMgr.accessQueue(qName,openOptions,null,null,null);
//set the put message options,will use the default settings
MQPutMessageOptions pmo=new MQPutMessageOptions();
//build a message and write data
MQMessage outMsg=new MQMessage();
//prepare message with the user data
String msgString="Test Message from PtpSender program";
outMsg.writeUTF(msgString);
//Now we put the message on the Q
queue.put(outMsg,pmo);
//commit the transaction
qMgr.commit();
System.out.println("The message has been sussesfully put #####");
//close the Q and QManager objects
queue.close();
qMgr.disconnect();
}
catch(MQException ex)...{
System.out.println("completion code:"+ex.completionCode+" Reason code:"+ex.reasonCode);
ex.printStackTrace();
}
catch(Exception e)...{
e.printStackTrace();
}
}
}

import com.ibm.mq.MQC;
import com.ibm.mq.MQEnvironment;
import com.ibm.mq.MQQueue;
import com.ibm.mq.MQQueueManager;
import com.ibm.*;
import com.ibm.mq.*;

/**//*
* Created on 2005-1-18
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/

/** *//**
* @author Ralph
*
* TODO To change the template for this generated type comment go to Window -
* Preferences - Java - Code Style - Code Templates
*/
public class PtpReceiver ...{

public static void main(String[] args) ...{
try ...{
String hostName = "neu";
String channel = "ch_server";
String qManager = "QM_guo";
String qName = "Q_guo";
// set up the MQEnvironment properties for the client
MQEnvironment.hostname = hostName;
MQEnvironment.channel = channel;
MQEnvironment.properties.put(MQC.TRANSPORT_PROPERTY,
MQC.TRANSPORT_MQSERIES);
MQEnvironment.CCSID = 1381;
// connetion to Q Manager
MQQueueManager qMgr = new MQQueueManager(qManager);
// set up the open options
int openOptions = MQC.MQOO_INPUT_SHARED
| MQC.MQOO_FAIL_IF_QUIESCING;
// open the Q
MQQueue queue = qMgr.accessQueue(qName, openOptions, null, null,
null);
// set get message options
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.options = gmo.options + MQC.MQGMO_SYNCPOINT;
gmo.options = gmo.options + MQC.MQGMO_WAIT;
gmo.options = gmo.options + MQC.MQGMO_FAIL_IF_QUIESCING;
gmo.waitInterval = 3000;
// build mssage
MQMessage inMsg = new MQMessage();
// get the message from Q
queue.get(inMsg, gmo);
// read the data from the message
String msgString = inMsg.readUTF();
System.out.println("The Message from Q is :" + msgString);
// commit the trasaction
qMgr.commit();
// close the Q and connection
queue.close();
qMgr.disconnect();
} catch (MQException ex) ...{
System.out.println("Completion code is:" + ex.completionCode
+ " reason code is:" + ex.reasonCode);
ex.printStackTrace();
} catch (Exception e) ...{
e.printStackTrace();
}
}
}

文档中的源程序没有红色部分的代码,这是我在调试的过程中出现提示:队列管理器没有打开CCSID功能的提示。经过在网上找资料和查看文档,最后知道是由于Windows 2000与Windows XP CCSID不同导致的,所以在代码中对CCSID的值进行显示的负值后问题解决了。
CCSID的值在AIX上一般设为1383,如果要支持GBK则设为1386,在WIN上设为1381。
本文介绍了一种在使用WebSphere MQ进行消息传递时遇到的CCSID问题及其解决方案。通过设置正确的CCSID值来确保Windows2000与WindowsXP间的兼容性。
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