java结合WebSphere MQ实现接收队列文件功能

首先我们先来简单介绍下websphere mq以及安装使用简介

websphere mq  : 用于传输信息 具有跨平台的功能。

1 安装websphere mq 并启动

2 websphere mq 建立 queue Manager (如：MQSI_SAMPLE_QM)

3 建立queue 类型选择 Local类型 的 （如lq  ）

4 建立channels 类型选择Server Connection （如BridgeChannel）

接下来，我们来看实例代码：

MQFileReceiver.java

package com.mq.dpca.file;
 
import java.io.File;
import java.io.FileOutputStream;
 
import com.ibm.mq.MQEnvironment;
import com.ibm.mq.MQException;
import com.ibm.mq.MQGetMessageOptions;
import com.ibm.mq.MQMessage;
import com.ibm.mq.MQQueue;
import com.ibm.mq.MQQueueManager;
import com.ibm.mq.constants.MQConstants;
import com.mq.dpca.msg.MQConfig;
import com.mq.dpca.util.ReadCmdLine;
import com.mq.dpca.util.RenameUtil;
 

public class MQFileReceiver {
  private MQQueueManager qmgr; // 连接到队列管理器
 
  private MQQueue inQueue; // 传输队列
 
  private String queueName = ""; // 队列名称
 
  private String host = ""; //
 
  private int port = 1414; // 侦听器的端口号
 
  private String channel = ""; // 通道名称
 
  private String qmgrName = ""; // 队列管理器
 
  private MQMessage inMsg; // 创建消息缓冲
 
  private MQGetMessageOptions gmo; // 设置获取消息选项
 
  private static String fileName = null; // 接收队列上的消息并存入文件
 
  private int ccsid = 0;
 
  private static String file_dir = null;
 
  
  public static void main(String args[]) {
    MQFileReceiver mfs = new MQFileReceiver();
    //初始化连接
    mfs.initproperty();
    //接收文件
    mfs.runGoupReceiver();
    //获取shell脚本名
//   String shellname = MQConfig.getValueByKey(fileName);
//   if(shellname!=null&&!"".equals(shellname)){
//     //调用shell
//     ReadCmdLine.callShell(shellname);
//   }else{
//     System.out.println("have no shell name,only receive files.");
//   }
 
  }
 
  public void runGoupReceiver() {
    try {
      init();
      getGroupMessages();
      qmgr.commit();
      System.out.println("n Messages successfully Receive ");
    } catch (MQException mqe) {
      mqe.printStackTrace();
      try {
 System.out.println("n Backing out Transaction ");
 qmgr.backout();
 System.exit(2);
      } catch (Exception e) {
 e.printStackTrace();
 System.exit(2);
      }
    } catch (Exception e) {
      e.printStackTrace();
      System.exit(2);
    }
  }
 
  
  private void init() throws Exception {
    
    MQEnvironment.hostname = host;
    MQEnvironment.channel = channel;
    MQEnvironment.port = port;
 
    
    qmgr = new MQQueueManager(qmgrName);
 
    
    int opnOptn = MQConstants.MQOO_INPUT_AS_Q_DEF
 | MQConstants.MQOO_FAIL_IF_QUIESCING;
 
    
    inQueue = qmgr.accessQueue(queueName, opnOptn, null, null, null);
  }
 
  
  public void getGroupMessages() {
    
    gmo = new MQGetMessageOptions();
    gmo.options = MQConstants.MQGMO_FAIL_IF_QUIESCING;
    gmo.options = gmo.options + MQConstants.MQGMO_SYNCPOINT;
    
    gmo.options = gmo.options + MQConstants.MQGMO_WAIT;
    
    gmo.waitInterval = 5000;
    
    gmo.options = gmo.options + MQConstants.MQGMO_ALL_MSGS_AVAILABLE;
    
    gmo.options = gmo.options + MQConstants.MQGMO_LOGICAL_ORDER;
    gmo.matchOptions = MQConstants.MQMO_MATCH_GROUP_ID;
    
    inMsg = new MQMessage();
    try {
      FileOutputStream fos = null;
      
      while (true) {
 try {
   inQueue.get(inMsg, gmo);
   if (fos == null) {
     try {
fileName = inMsg.getStringProperty("fileName");
String fileName_full = null;
fileName_full = file_dir + RenameUtil.rename(fileName);
fos = new FileOutputStream(new File(fileName_full));
int msgLength = inMsg.getMessageLength();
byte[] buffer = new byte[msgLength];
inMsg.readFully(buffer);
fos.write(buffer, 0, msgLength);

char x = gmo.groupStatus;
if (x == MQConstants.MQGS_LAST_MSG_IN_GROUP) {
  System.out.println("Last Msg in Group");
  break;
}
inMsg.clearMessage();
 
     } catch (Exception e) {
System.out
    .println("Receiver the message without property,do nothing!");
inMsg.clearMessage();
     }
   } else {
     int msgLength = inMsg.getMessageLength();
     byte[] buffer = new byte[msgLength];
     inMsg.readFully(buffer);
     fos.write(buffer, 0, msgLength);
     
     char x = gmo.groupStatus;
     if (x == MQConstants.MQGS_LAST_MSG_IN_GROUP) {
System.out.println("Last Msg in Group");
break;
     }
     inMsg.clearMessage();
   }
 } catch (Exception e) {
   char x = gmo.groupStatus;
   if (x == MQConstants.MQGS_LAST_MSG_IN_GROUP) {
     System.out.println("Last Msg in Group");
   }
   break;
 }
      }
      if (fos != null)
 fos.close();
    } catch (Exception e) {
      System.out.println(e.getMessage());
    }
  }
 
  public void initproperty() {
    MQConfig config = new MQConfig().getInstance();
    if (config.getMQ_MANAGER() != null) {
      qmgrName = config.getMQ_MANAGER();
      queueName = config.getMQ_QUEUE_NAME();
      channel = config.getMQ_CHANNEL();
      host = config.getMQ_HOST_NAME();
      port = Integer.valueOf(config.getMQ_PROT());
      ccsid = Integer.valueOf(config.getMQ_CCSID());
      file_dir = config.getFILE_DIR();
    }
  }
}