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:
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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;
/**
*
* MQ分组接收文件功能
* 主动轮询
*/
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 ;
/**
* 程序的入口
*
* @param args
*/
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 );
}
}
/**
* 初始化服务器连接信息
*
* @throws Exception
*/
private void init() throws Exception {
/* 为客户机连接设置MQEnvironment属性 */
MQEnvironment.hostname = host;
MQEnvironment.channel = channel;
MQEnvironment.port = port;
/* 连接到队列管理器 */
qmgr = new MQQueueManager(qmgrName);
/* 设置队列打开选项以输 */
int opnOptn = MQConstants.MQOO_INPUT_AS_Q_DEF
| MQConstants.MQOO_FAIL_IF_QUIESCING;
/* 打开队列以输 */
inQueue = qmgr.accessQueue(queueName, opnOptn, null, null, null);
}
/**
* 接受文件的主函数
*
* @throws Exception
*/
public void getGroupMessages() {
/* 设置获取消息选项 */
gmo = new MQGetMessageOptions();
gmo.options = MQConstants.MQGMO_FAIL_IF_QUIESCING;
gmo.options = gmo.options + MQConstants.MQGMO_SYNCPOINT;
/* 等待消息 */
gmo.options = gmo.options + MQConstants.MQGMO_WAIT;
/* 设置等待时间限制 */
gmo.waitInterval = 5000;
/* 只获取消息 */
gmo.options = gmo.options + MQConstants.MQGMO_ALL_MSGS_AVAILABLE;
/* 以辑顺序获取消息 */
gmo.options = gmo.options + MQConstants.MQGMO_LOGICAL_ORDER;
gmo.matchOptions = MQConstants.MQMO_MATCH_GROUP_ID;
/* 创建消息缓冲 */
inMsg = new MQMessage();
try {
FileOutputStream fos = null;
/* 处理组消息 */
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);
/* 查看是否是最后消息标识 */
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);
/* 查看是否是最后消息标识 */
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();
}
}
}
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