java往MQ里面发消息和取消息
package test;
import java.io.IOException;
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;
import com.ibm.mq.constants.MQConstants;
public class test1{
//定义队列管理器和队列的名称
private static String qmName;
private static String qName;
private static MQQueueManager qMgr;
static{
//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="172.31.17.162"; //MQ服务器的IP地址
MQEnvironment.channel="SVRCONN_GW"; //服务器连接的通道
MQEnvironment.CCSID=1208; //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=33333; //MQ端口
qmName = "QM_TEST"; //MQ的队列管理器名称
qName = "TEST"; //MQ远程队列的名称
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 int sendMessage(String message){
int result=0;
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_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();
//将数据放入消息缓冲区
putMessage.writeUTF(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);
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 result;
}
/**
* 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 message=null;
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 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 = 1000 ; // 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);
// 从队列中取出消息
queue.get(retrieve, gmo);
byte[] buf = new byte[retrieve.getMessageLength()];
retrieve.readFully(buf);
System.out.println("The message is: " + new String(buf));
queue.close();
}catch (MQException ex) {
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[]) throws InterruptedException {
/*下面两个方法可同时使用,也可以单独使用*/
//sendMessage("this is a test");
//System.out.println("jwh");
for (int i = 0; i < 100; i++) {
getMessage();
Thread.sleep(20000);
}
}
}
*