JBoss ESB学习笔记14——第十三个ESB应用Transform CSV to XML

续上篇介绍了第十二个ESB应用，本文介绍第十三个ESB应用——Transform CSV to XML。

 

说明：本文及后续文章虽非百分百的原创，但毕竟包含本人的努力和付出，所以希望大家转载时务请注明出处：http://yarafa.iteye.com/，谢谢合作。

 

 

1 概述
本实例主要演示了如何将一个CSV文件(逗号分隔的值文件)转换成XML格式字符串，本实例的转换是通过配置Smooks实现的，这里的转换过程分为两步，一是将CSV转换成中间XML格式，然后再转换成目标XML格式。

 

2 新建ESB工程
操作过程略。

 

3 ESB配置
3.1 创建消息队列

<?xml version="1.0" encoding="UTF-8"?>
<server>
	<mbean code="org.jboss.jms.server.destination.QueueService"		name="jboss.esb.quickstart.destination:service=Queue,name=transformCSV2XMLGw" xmbean-dd="xmdesc/Queue-xmbean.xml">
		<depends optional-attribute-name="ServerPeer">
jboss.messaging:service=ServerPeer
		</depends>
		<depends>jboss.messaging:service=PostOffice</depends>
	</mbean>
	<mbean code="org.jboss.jms.server.destination.QueueService"		name="jboss.esb.quickstart.destination:service=Queue,name=transformCSV2XMLEsb" 	xmbean-dd="xmdesc/Queue-xmbean.xml">
		<depends optional-attribute-name="ServerPeer">
jboss.messaging:service=ServerPeer
		</depends>
		<depends>jboss.messaging:service=PostOffice</depends>
	</mbean>
</server>

 

3.2 定义Provider
这里将定义一个JMS Provider，并定义2个消息通道，内容如下：

<jms-provider connection-factory="ConnectionFactory" name="JBossMQ">
	<jms-bus busid="gwChanel">
		<jms-message-filter dest-name="queue/transformCSV2XMLGw"
			dest-type="QUEUE" />
	</jms-bus>
	<jms-bus busid="esbChanel">
		<jms-message-filter dest-name="queue/transformCSV2XMLEsb"
			dest-type="QUEUE" />
	</jms-bus>
</jms-provider>

 

3.3 定义转换映射文件
在src目录下新建文件smooks-res.xml，内容如下：

<?xml version='1.0' encoding='UTF-8'?>
<smooks-resource-list xmlns=http://www.milyn.org/xsd/smooks-1.1.xsd
xmlns:csv="http://www.milyn.org/xsd/smooks/csv-1.1.xsd">
    <profiles><profile base-profile="source-csv" /><profile base-profile="canonical-xml" /></profiles>
    <csv:reader targetProfile="source-csv" fields="orderId,orderDate,statusCode,netAmount,totalAmount,tax,userName,firstName,lastName,state,orderLine1Position,orderLine1Quantity,orderLine1ProductId,orderLine1ProductTitle,orderLine1ProductPrice,orderLine2Position,orderLine2Quantity,orderLine2ProductId,orderLine2ProductTitle,orderLine2ProductPrice" />
	<resource-config target-profile="canonical-xml" selector="csv-set"><resource type="xsl">
            <![CDATA[
			<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:smooks-bean="xalan://org.milyn.templating.xslt.XalanJavabeanExtension"
                extension-element-prefixes="smooks-bean"
                version="1.0"><xsl:output method="xml" encoding="UTF-8" /><xsl:template match="*" name="templatelet">
					<orders><xsl:for-each select="csv-record">
							<Order orderId="{orderId}"
                                orderDate="{orderDate}"
                                statusCode="{statusCode}"
                                netAmount="{netAmount}"
                                totalAmount="{totalAmount}"
                                tax="{tax}" >
								<Customer userName="{userName}" firstName="{firstName}" lastName="{lastName}" state="{state}" />
								<OrderLines>
									<OrderLine posistion="{orderLine1Position}" quantity="{orderLine1Quantity}">
										<Product  productId="{orderLine1ProductId}" title="{orderLine1ProductTitle}" price="{orderLine1ProductPrice}"/>
									</OrderLine>
									<OrderLine posistion="{orderLine2Position}" quantity="{orderLine2Quantity}">
										<Product  productId="{orderLine2ProductId}" title="{orderLine2ProductTitle}" price="{orderLine2ProductPrice}"/>
									</OrderLine>
								</OrderLines>
							</Order>
						</xsl:for-each>
					</orders>
                </xsl:template>
			</xsl:stylesheet>]]>
        </resource>
        <param name="is-xslt-templatelet">false</param>
    </resource-config>
</smooks-resource-list>

 

3.4 定义Service

<service category="Transform" description="Transform CSV 2 XML"
	name="TransformService">
	<listeners />
	<actions mep="OneWay" />
</service>

 

3.5 定义Listener

<listeners>
	<jms-listener busidref="gwChanel" is-gateway="true"
		name="gwListener" />
	<jms-listener busidref="esbChanel" name="esbListener" />
</listeners>

 

3.6 定义Action

<action class="org.jboss.soa.esb.actions.SystemPrintln"
name="printAction">
	<property name="message" value="Message before CVS to XML
transformation" />
</action>
<action class="org.jboss.soa.esb.smooks.SmooksAction"
name="transformCSV2XML">
	<property name="smooksConfig" value="/smooks-res.xml" />
	<property name="messageProfile" value="source-csv" />
</action>
<action class="org.jboss.soa.esb.actions.SystemPrintln"
name="printAfterAction">
	<property name="message" value="Message after CVS to XML
transformation" />
</action>
<action class="org.jboss.soa.esb.smooks.SmooksAction"
name="transform2XML">
	<property name="smooksConfig" value="/smooks-res.xml" />
	<property name="messageProfile" value="canonical-xml" />
</action>
<action class="org.jboss.soa.esb.actions.SystemPrintln"
name="printFinishAction">
	<property name="message"
value="Message after Smooks intermediate xml -> target xml" />
</action>

 

3.6 配置部署文件
部署依赖文件deployment.xml内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<jbossesb-deployment>
	<depends>jboss.esb:deployment=smooks.esb</depends>
	<depends>jboss.esb.quickstart.destination:service=Queue,name=transformCSV2XMLGw
	</depends>
	<depends>jboss.esb.quickstart.destination:service=Queue,name=transformCSV2XMLEsb
	</depends>
</jbossesb-deployment>

 

3.7 部署ESB
将整个工程导出成一个ESB文件，并保存至JBoss ESB Server的部署目录下，启动JBoss ESB Server即可。

 

4 ESB客户端
4.1 新建Java工程
这里略去操作过程以及添加所需要的Jar包，具体操作过程可参考第一个ESB实例说明。

 

4.2 发送消息的客户端

/***********************************************************************
 * <p>Project Name: helloworldclient</p>
 * <p>File Name: com.thu.afa.esb.jbossesb.client.TransformCSV2XMLClient.java</p>
 * <p>Copyright: Copyright (c) 2010</p>
 * <p>Company: <a href="http://afa.thu.com">http://afa.thu.com</a></p>
 ***********************************************************************/
package com.thu.afa.esb.jbossesb.client;

import java.io.File;
import java.util.Properties;

import javax.jms.ObjectMessage;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.naming.Context;
import javax.naming.InitialContext;

import org.jboss.soa.esb.util.FileUtil;

/**
 * <p>Class Name: TransformCSV2XMLClient</p>
 * <p>Description: </p>
 * @author Afa
 * @date 2010-9-17
 * @version 1.0
 */
public class TransformCSV2XMLClient
{
	private QueueConnection connection;
	private QueueSession session;
	private Queue queue;
	
	public void setupConnection() throws Exception
	{
		Properties properties = new Properties();
		properties.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");   
		properties.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");   
		properties.put(Context.PROVIDER_URL, "jnp://127.0.0.1:1099");
		InitialContext context = new InitialContext(properties);
		
		QueueConnectionFactory factory = (QueueConnectionFactory) context.lookup("ConnectionFactory");
		connection = factory.createQueueConnection();
		queue = (Queue) context.lookup("queue/transformCSV2XMLGw");
		session = connection.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
		connection.start();
		
		System.out.println("Connection Started");
	}
	
	public void stop() throws Exception
	{
		if(connection != null) connection.stop();
		if(session != null) session.close();
		if(connection != null) connection.close();
	}
	
	public void sendAMessage(String fileName) throws Exception
	{
		QueueSender sender = session.createSender(queue);
		ObjectMessage objectMessage;
		File file = new File(fileName);
		if(!file.exists())
		{
			throw new Exception("Input message file [" + file.getAbsolutePath() + "] not found.");
		}
		String message = FileUtil.readTextFile(file);
		objectMessage = session.createObjectMessage(message);
		objectMessage.setStringProperty("jbesbfilename", "transformedmessageCSV2XML.log");
		sender.send(objectMessage);
		sender.close();
	}
	
	public static void main(String[] args) throws Exception
	{
		TransformCSV2XMLClient client = new TransformCSV2XMLClient();
		client.setupConnection();
		client.sendAMessage("SampleOrder.csv");
		client.stop();
	}
}

 

在客户端工程下创建SampleOrder.csv文件，并用文本编辑器编辑，输入以下内容：

1,Wed Nov 15 13:45:28 EST 2006,0,59.97,64.92,4.95,user1,Harry,Fletcher,SD,1,1,364,The 40-Year-Old Virgin,29.98,2,1,299,Pulp Fiction,29.99
2,Wed Nov 15 13:45:28 EST 2007,0,60.00,64.92,4.95,user2,Kalle,Anka,SD,1,1,364,Fletch,29.98,2,1,299,Fletch Lives,29.99
3,Wed Nov 15 13:45:28 EST 2007,0,60.00,64.92,4.95,user3,Donald,Duck,SD,1,1,364,The Goonies,29.98,2,1,4,Happy Gilmor,29.99

 

运行客户端程序即可看到以下输出结果：

        

 

 

今天阳光明媚，可心里却乌云密布……

天又黑了，可为什么总感觉天还没亮，肚子好饿……

 

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Stay Hungry, Stay Foolish!
http://yarafa.iteye.com
Afa
Apr 9th, 2011
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