IBM MQ 学习(一)

jqkyp

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import com.ibm.mq.MQC;
import com.ibm.mq.MQEnvironment;
import com.ibm.mq.MQException;
import com.ibm.mq.MQGetMessageOptions;
import com.ibm.mq.MQMessage;
import com.ibm.mq.MQPutMessageOptions;
import com.ibm.mq.MQQueue;
import com.ibm.mq.MQQueueManager;
public class CLIENT_MQ{  
//定义队列管理器和队列的名称  
private static final String qmName = "MQ_SERVICE";//MQ的队列管理器名称 ;   
//private static final String qName = "MIDDLE_SEND_QUEUE"; //MQ远程队列的名称  
private static MQQueueManager qMgr;//队列管理器
public  static void init(){  
//设置环境:  
//MQEnvironment中包含控制MQQueueManager对象中的环境的构成的静态变量，MQEnvironment的值的设定会在MQQueueManager的构造函数加载的时候起作用，  
//因此必须在建立MQQueueManager对象之前设定MQEnvironment中的值.  
MQEnvironment.hostname="10.172.12.156";          //MQ服务器的IP地址        
MQEnvironment.channel="SERVICE_JAVA";           //通道类型:服务器连接
MQEnvironment.CCSID=1381;//437                    //服务器MQ服务使用的编码1381代表GBK、1208代表UTF(Coded Character Set Identifier:CCSID)  
MQEnvironment.port=1456;                       //MQ端口  
try {  
//定义并初始化队列管理器对象并连接   
//MQQueueManager可以被多线程共享，但是从MQ获取信息的时候是同步的，任何时候只有一个线程可以和MQ通信。  
qMgr = new MQQueueManager(qmName);  
} catch (MQException e) {  
// TODO Auto-generated catch block  
System.out.println("初使化MQ出错");  
e.printStackTrace();  
}   
}  
/**
* 往MQ发送消息
* @param message
* @return
*/  
public static Map<String,Object> sendMessage(Object message,String qName){   
Map<String,Object> map=new HashMap<String,Object>();
try{     
//设置将要连接的队列属性  
// Note. The MQC interface defines all the constants used by the WebSphere MQ Java programming interface   
//(except for completion code constants and error code constants).  
//MQOO_INPUT_AS_Q_DEF:Open the queue to get messages using the queue-defined default.  
//MQOO_OUTPUT:Open the queue to put messages.  
/*目标为远程队列，所有这里不可以用MQOO_INPUT_AS_Q_DEF属性*/  
//int openOptions = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_OUTPUT;  
/*以下选项可适合远程队列与本地队列*/  
//int openOptions = MQC.MQOO_INQUIRE | MQC.MQOO_OUTPUT; //发送时使用
//int qOptioin = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_OUTPUT; 接收时使用
int openOptions = MQC.MQOO_OUTPUT | MQC.MQOO_FAIL_IF_QUIESCING;  
//连接队列   
//MQQueue provides inquire, set, put and get operations for WebSphere MQ queues.   
//The inquire and set capabilities are inherited from MQManagedObject.   
/*关闭了就重新打开*/  
if(qMgr==null || !qMgr.isConnected()){  
qMgr = new MQQueueManager(qmName);  
}  
MQQueue queue = qMgr.accessQueue(qName, openOptions);            
//定义一个简单的消息  
MQMessage putMessage = new MQMessage();
map.put("messageId",putMessage);
//String uuid=java.util.UUID.randomUUID().toString();
//将数据放入消息缓冲区  
putMessage.writeObject(message);   
//设置写入消息的属性（默认属性）  
MQPutMessageOptions pmo = new MQPutMessageOptions();
//将消息写入队列   
queue.put(putMessage,pmo);
map.put("message",message.toString());
queue.close();  
}catch (MQException ex) {   
System.out.println("A WebSphere MQ error occurred : Completion code "   + ex.completionCode + " Reason code " + ex.reasonCode);   
ex.printStackTrace();  
}catch (IOException ex) {   
System.out.println("An error occurred whilst writing to the message buffer: " + ex);   
}catch(Exception ex){  
ex.printStackTrace();  
}finally{  
try {  
qMgr.disconnect();  
} catch (MQException e) {  
e.printStackTrace();  
}  
}  
return map;  
}  

/**
* 处理完消息回放到MQ队列
* @param message
* @return
*/  
public static Map<String,Object> sendReplyMessage(Object message,String qName,MQMessage mqMessage){   
Map<String,Object> map=new HashMap<String,Object>();
try{     
//设置将要连接的队列属性  
// Note. The MQC interface defines all the constants used by the WebSphere MQ Java programming interface   
//(except for completion code constants and error code constants).  
//MQOO_INPUT_AS_Q_DEF:Open the queue to get messages using the queue-defined default.  
//MQOO_OUTPUT:Open the queue to put messages.  
/*目标为远程队列，所有这里不可以用MQOO_INPUT_AS_Q_DEF属性*/  
//int openOptions = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_OUTPUT;  
/*以下选项可适合远程队列与本地队列*/  
//int openOptions = MQC.MQOO_INQUIRE | MQC.MQOO_OUTPUT; //发送时使用
//int qOptioin = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_OUTPUT; 接收时使用
int openOptions = MQC.MQOO_OUTPUT | MQC.MQOO_FAIL_IF_QUIESCING;  
//连接队列   
//MQQueue provides inquire, set, put and get operations for WebSphere MQ queues.   
//The inquire and set capabilities are inherited from MQManagedObject.   
/*关闭了就重新打开*/  
if(qMgr==null || !qMgr.isConnected()){  
qMgr = new MQQueueManager(qmName);  
}  
MQQueue queue = qMgr.accessQueue(qName, openOptions);            
//定义一个简单的消息  
MQMessage putMessage = new MQMessage();
putMessage.messageId=mqMessage.messageId;
map.put("messageId",putMessage);
//String uuid=java.util.UUID.randomUUID().toString();
//将数据放入消息缓冲区  
putMessage.writeObject(message);   
//设置写入消息的属性（默认属性）  
MQPutMessageOptions pmo = new MQPutMessageOptions();
//将消息写入队列   
queue.put(putMessage,pmo);
map.put("message",message.toString());
queue.close();  
}catch (MQException ex) {   
System.out.println("A WebSphere MQ error occurred : Completion code "   + ex.completionCode + " Reason code " + ex.reasonCode);   
ex.printStackTrace();  
}catch (IOException ex) {   
System.out.println("An error occurred whilst writing to the message buffer: " + ex);   
}catch(Exception ex){  
ex.printStackTrace();  
}finally{  
try {  
qMgr.disconnect();  
} catch (MQException e) {  
e.printStackTrace();  
}  
}  
return map;  
}  

/**
* 从队列中去获取消息，如果队列中没有消息，就会发生异常，不过没有关系，有TRY...CATCH，如果是第三方程序调用方法，如果无返回则说明无消息
* 第三方可以将该方法放于一个无限循环的while(true){...}之中，不需要设置等待，因为在该方法内部在没有消息的时候会自动等待。
* @return
*/  
public static String getMessage(String qName,MQMessage mqMessage){  
String message="";  
try{              
//设置将要连接的队列属性  
// Note. The MQC interface defines all the constants used by the WebSphere MQ Java programming interface   
//(except for completion code constants and error code constants).  
//MQOO_INPUT_AS_Q_DEF:Open the queue to get messages using the queue-defined default.  
//MQOO_OUTPUT:Open the queue to put messages.  
//int qOptioin = MQC.MQOO_INQUIRE | MQC.MQOO_OUTPUT; 发送时使用
//int qOptioin = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_OUTPUT; 接收时使用
int openOptions = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_OUTPUT;  
MQMessage retrieve = new MQMessage();  
//设置取出消息的属性（默认属性）  
//Set the put message options.（设置放置消息选项）   
MQGetMessageOptions gmo = new MQGetMessageOptions();   
gmo.options = gmo.options + MQC.MQGMO_SYNCPOINT;//Get messages under sync point control（在同步点控制下获取消息）   
gmo.options = gmo.options + MQC.MQGMO_WAIT;  // Wait if no messages on the Queue（如果在队列上没有消息则等待）   
gmo.options = gmo.options + MQC.MQGMO_FAIL_IF_QUIESCING;// Fail if Qeue Manager Quiescing（如果队列管理器停顿则失败）   
gmo.waitInterval = 3000 ;  // Sets the time limit for the wait.（设置等待的毫秒时间限制）   
/*关闭了就重新打开*/  
if(qMgr==null || !qMgr.isConnected()){  
qMgr = new MQQueueManager(qmName);  
}  
MQQueue queue = qMgr.accessQueue(qName, openOptions);  
MQMessage retrievedMessage = new MQMessage();
//从队列中取出对应messageId的消息
retrieve.messageId = mqMessage.messageId;
// 从队列中取出消息
queue.get(retrieve, gmo);  
Object obj = retrieve.readObject();
message=obj.toString();//解决中文乱码问题
/*
//int size = rcvMessage.getMessageLength();
//byte[] p = new byte[size];
//rcvMessage.readFully(p);
int len=retrieve.getDataLength();
byte[] str = new byte[len];
retrieve.readFully(str,0,len);
message = new String(str);//readUTF();   
*/
queue.close();  
}catch (MQException ex) {
int reason=ex.reasonCode;
if(reason==2033)//no messages
{
message="nomessage";
}else{
System.out.println("A WebSphere MQ error occurred : Completion code " + ex.completionCode + " Reason code " + ex.reasonCode);   
}
}catch (IOException ex) {   
System.out.println("An error occurred whilst writing to the message buffer: " + ex);   
}catch(Exception ex){  
ex.printStackTrace();  
}finally{  
try {  
qMgr.disconnect();  
} catch (MQException e) {  
e.printStackTrace();  
}  
}  
return message;  
}  

public static void main(String args[]) {  
init();
Map<String,Object> map = new HashMap<String,Object>();
map=sendMessage("{name: test get message id 123}","SERVICE_TRANSFER_QUEUE");
MQMessage mqMessage = (MQMessage)map.get("messageId");
outSys("传输消息:",mqMessage.messageId.toString());  
outSys("接收传输队列:",getMessage("SERVICE_TRANSFER_QUEUE",mqMessage));
Map<String,Object> reply_map = new HashMap<String,Object>();
reply_map=sendReplyMessage("{name: local queue 008}","SERVICE_RECEIVE_QUEUE",mqMessage);
outSys("放入正常队列:",reply_map.get("message").toString());
outSys("接收正常队列:",getMessage("SERVICE_RECEIVE_QUEUE",mqMessage));
}
public static void outSys(String display,String val){
System.out.println(display+val);
}
}