ESB系列之中间件技术入门教程
【摘要】
文章目录
##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...
文章目录
##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);
}
}
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文章来源: smilenicky.blog.csdn.net,作者:smileNicky,版权归原作者所有,如需转载,请联系作者。
原文链接:smilenicky.blog.csdn.net/article/details/70596636
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