前言
本博客介绍Java中间件的一些知识，仅仅是一些知识储备。
中间件
中间件概念
中间件：中间件是一种介于操作系统和应用软件之间的一种软件，它使用系统软件所提供的基础服务（功能），衔接网络上应用系统的各个部分或不同的应用，能够达到资源共享、功能共享的目的。
若是以新一代的中间件系列产品来组合应用，同时配合以可复用的商务对象构件，则应用开发费用可节省至80%。
中间件分类
- 消息中间件
消息中间件适用与进行网络通讯的系统，建立网络通讯的通道，进行数据和文件的传送
产品：ActiveMQ、ZeroMQ、RabbitMQ、IBM webSphere MQ… - 交易中间件
交易中间件管理分布与不同操作系统的数据，实现数据一致性，保证系统的负载均衡
产品：IBM CICS,Bea tuxedo… - 对象中间件
保证不同厂家的软件之间的交互访问
产品：IBM componentbroker, iona orbix,borland visibroker… - 应用服务器
用来构造internet/intranet应用和其它分布式构件应用
产品：IBM Websphere,Bea weblogic… - 安全中间件
以公钥基础设施（pki）为核心的、建立在一系列相关国际安全标准之上的一个开放式应用开发平台
产品：entrust entrust… - 应用集成服务器
把工作流和应用开发技术如消息及分布式构件结合在一起，使处理能方便自动地和构件、script 应用、工作流行为结合在一起，同时集成文档和电子邮件
产品：lss flowman、ibm flowmark、vitria businessagiliti
ESB
ESB，即企业服务总线
松散耦合一直是企业软件开发中的一个很重要的内容，而面向服务的SOA编程在随着ESB的应用得到了进一步的发展，ESB就像服务提供者和服务使用者之间的中间层 
JMS
JMS，即Java Message Service
ESB仅仅是作为一个中间层，所以应用程序之间的消息通讯必须借助JMS，即通过JMS从服务使用者接收消息，并将其转发到相应的服务提供者。
而且，JMS 还定义了可发送的若干不同类型的消息。例如，Text 消息包含消息的字符串表示形式；Object 消息包含序列化的 Java 对象；Map 消息包含键/值对的映射，等等。
附录：
MQ DEMO：
package com.wms.batchMsg;
import java.io.File;
import java.io.IOException;
import java.sql.Timestamp;
import java.text.ParseException;
import java.util.Date;
import org.apache.log4j.Logger;
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 MQUtil {
private static String qmName;
private static MQQueueManager qMgr;
private static Logger logger = Logger.getLogger(MQUtil.class);
static{
try{
MQEnvironment.hostname=ConfigManager.getValue("MQ_MQHost");
MQEnvironment.channel=ConfigManager.getValue("MQ_Server_Channel");
MQEnvironment.CCSID=Integer.parseInt(ConfigManager.getValue("MQ_CCSID"));
MQEnvironment.port=Integer.parseInt(ConfigManager.getValue("MQ_port"));
//MQEnvironment.userID = ConfigManager.getValue("MQ_UserId");
//MQEnvironment.password = ConfigManager.getValue("MQ_pass");
qmName = ConfigManager.getValue("MQ_QMname");
MQEnvironment.properties.put(MQConstants.TRANSPORT_PROPERTY,MQConstants.TRANSPORT_MQSERIES_CLIENT);
qMgr = new MQQueueManager(qmName);
}catch(MQException e){
e.printStackTrace();
logger.info("qManager failed: Completion code " + e.completionCode + " Reason Code is "
+ e.reasonCode);
}
}
public static MQQueue getSendQueue(String queueName) {
MQQueue sQueue;
int openSendOptions = MQConstants.MQOO_OUTPUT | MQConstants.MQOO_FAIL_IF_QUIESCING
| MQConstants.MQOO_SET_IDENTITY_CONTEXT;
try {
sQueue = qMgr.accessQueue(queueName, openSendOptions);
} catch (MQException e) {
e.printStackTrace();
return null;
}
return sQueue;
}
public static MQQueue getReceiveQueue(String revQueueName){
MQQueue rQueue ;
int openRcvOptions = MQConstants.MQOO_INPUT_AS_Q_DEF | MQConstants.MQOO_FAIL_IF_QUIESCING;
try{
rQueue = qMgr.accessQueue(revQueueName, openRcvOptions);
}catch(MQException e){
e.printStackTrace();
return null;
}
return rQueue;
}
public static void sendMsg(MQMsgEntity entity,String queueName) {
MQQueue sendQ = null;
try {
MQMessage qMsg = new MQMessage();
byte[] qByte = entity.getMsgStr().getBytes("UTF-8");
// String message = entity.getMsgStr();
qMsg.messageId = MQConstants.MQMI_NONE;
//TODO send and receive
if(entity.getCorrelId()!=null){
qMsg.correlationId = entity.getCorrelId();
}
qMsg.format = MQConstants.MQFMT_STRING;
qMsg.write(qByte);
MQPutMessageOptions pmo = new MQPutMessageOptions();
pmo.options = pmo.options + MQConstants.MQPMO_NEW_MSG_ID;
pmo.options = pmo.options + MQConstants.MQPMO_NO_SYNCPOINT;
pmo.options = pmo.options + MQConstants.MQPMO_SET_IDENTITY_CONTEXT;
sendQ = getSendQueue(queueName);
sendQ.put(qMsg, pmo);
qMgr.commit();
//logger.info("The send message is: " +new String(qByte,"UTF-8"));
} catch (MQException e) {
logger.info("A WebSphere MQ error occurred : Completion code "
+ e.completionCode + " Reason Code is "
+ e.reasonCode);
} catch (java.io.IOException e) {
logger.info("An error occurred whilst to the message buffer "
+ e);
}finally{
try{
if(sendQ!=null){
sendQ.close();
}
}catch(MQException e){
// TODO Auto-generated catch block
e.printStackTrace();
logger.info("Error for MQ connection:"+e.getMessage());
}
}
}
// public static void messageHandlerByQueueName(MQMsgEntity entity,String queueName) {
// try {
// if(queueName.equalsIgnoreCase("sap_OrdersQueue")){
// ECOrder order = new ECOrder();
// order.CallOrderCURFC(entity, "ZECI001");
// }else if(queueName.equalsIgnoreCase("sap_OrderPendReqQueue")){
// ECOrderPending orderPending = new ECOrderPending();
// orderPending.CallOrderPendRFC(entity, "ZECI005");
// }else if(queueName.equalsIgnoreCase("sap_OrderPendCancelQueue")){
// ECOrderPending orderPending = new ECOrderPending();
// orderPending.CallCancelOrderPendRFC(entity, "ZECI006");
// }else if(queueName.equalsIgnoreCase("sap_ECReturnsQueue")){
// ECOrder order = new ECOrder();
// order.callOrderCancelRFC(entity, "ZECI001");
// }else if(queueName.equalsIgnoreCase("sap_downpaymentQueue")){
// ECDownPayment downPayment = new ECDownPayment();
// downPayment.callDownPaymentRFC(entity, "ZECI007");
// }else if(queueName.equalsIgnoreCase("sap_360LBPQueue")){
// EC360LBP lbp = new EC360LBP();
// lbp.generateHtmlFromQueue(entity.getMsgStr());
// }
// } catch (Exception e) {
// e.printStackTrace();
// logger.error(e.getMessage());
// }
//
// }
public MQQueueManager generateNewMQQM(){
MQQueueManager qMgr = null;
try{
MQEnvironment.hostname=ConfigManager.getValue("MQ_MQHost");
MQEnvironment.channel=ConfigManager.getValue("MQ_Server_Channel");
MQEnvironment.CCSID=Integer.parseInt(ConfigManager.getValue("MQ_CCSID"));
MQEnvironment.port=Integer.parseInt(ConfigManager.getValue("MQ_port"));
String qmName = ConfigManager.getValue("MQ_QMname");
MQEnvironment.properties.put(MQConstants.TRANSPORT_PROPERTY,MQConstants.TRANSPORT_MQSERIES_CLIENT);
qMgr = new MQQueueManager(qmName);
}catch(MQException e){
e.printStackTrace();
logger.info("qManager failed: Completion code " + e.completionCode + " Reason Code is "
+ e.reasonCode);
}
return qMgr;
}
public void MultiThreadGetMqMessage(MQQueueManager qMgr,String queueName){
MQQueue revQ = null;
String mqString = null;
MQMsgEntity entity = new MQMsgEntity();
int openRcvOptions = MQConstants.MQOO_INPUT_AS_Q_DEF | MQConstants.MQOO_FAIL_IF_QUIESCING;
try {
MQMessage retrievedMessage = new MQMessage();
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.options += MQConstants.MQPMO_NO_SYNCPOINT;//
gmo.options = gmo.options + MQConstants.MQGMO_WAIT;//
gmo.options = gmo.options + MQConstants.MQGMO_FAIL_IF_QUIESCING;//
gmo.waitInterval = MQConstants.MQWI_UNLIMITED;//
gmo.matchOptions = MQConstants.MQMO_MATCH_MSG_ID;
retrievedMessage.format=MQConstants.MQFMT_STRING;
// MQC.MQWI_UNLIMITED;
revQ = qMgr.accessQueue(queueName, openRcvOptions);
revQ.get(retrievedMessage, gmo);
qMgr.commit();
int length = retrievedMessage.getDataLength();
if(length >0){
long startTime = System.currentTimeMillis();
byte[] msg = new byte[length];
retrievedMessage.readFully(msg);
mqString = new String(msg, "UTF-8");
if(queueName.equalsIgnoreCase("sap_360LBPQueue")){
mqString = mqString.replace("'", "\"");
}
long timeuse = System.currentTimeMillis() - startTime;
Date currentDate = new Date();
Timestamp receiveTimestamp = new Timestamp(currentDate.getTime());
logger.info("=========mqString from "+queueName+" :"+mqString);
DBUtil.insertIntoMQLog("Receive",queueName, mqString, timeuse, "success", "", null, receiveTimestamp);
entity.setMsgStr(mqString);
//messageHandlerByQueueName(entity,queueName);
}else{
logger.info("Error MQ string Sent!");
}
}
catch (MQException e) {
e.printStackTrace();
if (e.reasonCode != 2033)
{
logger.info(e.getMessage());
logger.info("Completion code "
+ e.completionCode + " Reason Code is " + e.reasonCode);
}
} catch (IOException e) {
logger.info("IO error:" + e.getMessage());
} finally{
try{
if(revQ!=null){
revQ.close();
}
}catch(MQException mqEx){
int rc = mqEx.reasonCode;
if (rc != MQException.MQRC_NO_MSG_AVAILABLE)
{
logger.info(" PUT Message failed with rc = "
+ rc);
}
}
}
}
public static String getMQMessage(String queueName) throws ParseException {
MQQueue revQ = null;
String mqString = null;
MQMsgEntity entity = new MQMsgEntity();
try {
MQMessage retrievedMessage = new MQMessage();
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.options += MQConstants.MQPMO_NO_SYNCPOINT;//
gmo.options = gmo.options + MQConstants.MQGMO_WAIT;//
gmo.options = gmo.options + MQConstants.MQGMO_FAIL_IF_QUIESCING;//
gmo.waitInterval = MQConstants.MQWI_UNLIMITED;//
gmo.matchOptions = MQConstants.MQMO_MATCH_MSG_ID;
retrievedMessage.format=MQConstants.MQFMT_STRING;
// MQC.MQWI_UNLIMITED;
revQ = getReceiveQueue(queueName);
revQ.get(retrievedMessage, gmo);
qMgr.commit();
int length = retrievedMessage.getDataLength();
if(length >0){
byte[] msg = new byte[length];
retrievedMessage.readFully(msg);
mqString = new String(msg, "UTF-8");
logger.info("=========getMQMessage===mqString from "+queueName+" :"+mqString);
entity.setMsgStr(mqString);
//messageHandlerByQueueName(entity,queueName);
}else{
logger.info("Error MQ string Sent!");
}
}
catch (MQException e) {
e.printStackTrace();
if (e.reasonCode != 2033)
{
e.printStackTrace();
logger.info("Completion code "
+ e.completionCode + " Reason Code is " + e.reasonCode);
}
} catch (java.io.IOException e) {
System.out.println("error" + e.getMessage());
}finally{
try{
if(revQ!=null){
revQ.close();
}
}catch(MQException mqEx){
int rc = mqEx.reasonCode;
if (rc != MQException.MQRC_NO_MSG_AVAILABLE)
{
System.out.println(" PUT Message failed with rc = "
+ rc);
}
}
}
return mqString;
}
public void revAndSend(MQMsgEntity entity,String queueName){
//
sendMsg(entity,queueName);
}
public void subscribeMessage() throws ParseException{
while(true){
logger.info("waiting to get message.....");
getMQMessage("sap_OrdersQueue");
}
}
public void subscribeOrderPendMessage() throws ParseException{
while(true){
logger.info("waiting to get message.....");
getMQMessage("sap_ECReturnsQueue");
}
}
public static void main(String[] args) throws IOException, ParseException {
MQMsgEntity entity = new MQMsgEntity();
String sendMsg = XMLBeanUtil.readFileToString(new File("D://batchXML0108.txt"));
int intPktCtlNbr = 1;
String StrPkt = null;
String newPktCtlNbr =null;
for (int i = 0; i < 20000; i++) {
newPktCtlNbr = String.format("%09d", intPktCtlNbr+i);
StrPkt="<PktCtlNbr>"+"V"+newPktCtlNbr+"</PktCtlNbr>";
String changeSendMsg = sendMsg.replaceAll("<PktCtlNbr>6001996171</PktCtlNbr>", StrPkt);
System.out.println(StrPkt);
entity.setMsgStr(changeSendMsg);
sendMsg(entity,"wms_SAPOrderQueue");
}
// MQUtil util = new MQUtil();
// util.subscribeMessage();
// util.subscribeOrderPendMessage();
// util.messageHandlerByQueueName(entity, "sap_360LBPQueue");
// getMQMessage("sap_OrderPendCancelQueue");
// System.out.println("rev message is:"+message);
}
}