ESB构架的MULE(一)

mule，就是传说中的一个ESB构架的实现，初步试用了一下，感觉它圈地圈得厉害，把
AXIS，XFIRE，POP3,SMTP,SOCKET,HTTP,JMS等通信连接方式都包括进来，可能是为了一些和老系统的接口
下载的地址是：
http://mule.codehaus.org/display/MULE/Home
下载后放置在路径：
D:\tool\mule-1.4.1
配置MULE_HOME
PATH里面把BIN加入进去
在路径D:\tool\mule-1.4.1\conf下有个配置文件
wrapper.conf
打开后修改
wrapper.java.classpath.2=%MULE_HOME%/lib/user/*.jar
wrapper.java.classpath.3=%MULE_HOME%/lib/boot/*.jar
wrapper.java.classpath.4=E:/project/megaeyes/Mail2Jms/WebRoot/WEB-INF/classes
这里配置的是MULE启动的时候要加载的JAR包和CLASSPATH
我的项目是MAIL2JMS，所以我直接指向了自己的CLASS目录，这样我的任何修改都直接生效了，
另外可以执行他的例子，ECHO.BAT
仿造他的例子，我自己写了一个从邮件服务器JAMES上收到信息后转发给ACTIVE-MQ的东东
类比较少，一一贴出来，实现类EmailManagerImpl.java:

package com.megaeyes.service.impl;
import org.mule.components.simple.LogComponent;
import org.mule.umo.UMOEventContext;
import com.megaeyes.service.EmailManager;
/**
* 
* @author sillycat.luo
*
*/
public class EmailManagerImpl extends LogComponent implements EmailManager {
public Object onCall(UMOEventContext context) throws Exception {
// 调用基类打印出日志
// super.onCall(context);
// 调用transfer 得到对象
Object o = context.getTransformedMessage();
return o;
}
}
消息类，MessageBean.java:
/*
* Created on 2007-7-23 11:40:12
* @author hejing
*/
package com.megaeyes.sms.gateway.databean;
import java.io.Serializable;
public class MessageBean implements Serializable{
    private static final long serialVersionUID = -1353347933934679190L;
    private String topic;           //标题
    private String msgSrcID;        //消息来源编号
    private String msgTypeID;       //消息类型编号
    private String deviceName;      //设备名称
    private String deviceTypeName; //设备类型名称
    private String deviceIP;        //设备IP
    private String msgTypeName;     //消息类型名称
    private String msgID;           //消息流水号
    private String severityName;    //告警级别名称
    private String faultTime;       //故障产生时间
    private String content;         //内容
    
    
    /**
     * @return Returns the content.
     */
    public String getContent() {
        return content;
    }
    /**
     * @param content The content to set.
     */
    public void setContent(String content) {
        this.content = content;
    }
    /**
     * @return Returns the topic.
     */
    public String getTopic() {
        return topic;
    }
    /**
     * @param topic The topic to set.
     */
    public void setTopic(String topic) {
        this.topic = topic;
    }
    /**
     * @return Returns the deviceIP.
     */
    public String getDeviceIP() {
        return deviceIP;
    }
    /**
     * @param deviceIP The deviceIP to set.
     */
    public void setDeviceIP(String deviceIP) {
        this.deviceIP = deviceIP;
    }
    /**
     * @return Returns the deviceName.
     */
    public String getDeviceName() {
        return deviceName;
    }
    /**
     * @param deviceName The deviceName to set.
     */
    public void setDeviceName(String deviceName) {
        this.deviceName = deviceName;
    }
    /**
     * @return Returns the deviceTypeName.
     */
    public String getDeviceTypeName() {
        return deviceTypeName;
    }
    /**
     * @param deviceTypeName The deviceTypeName to set.
     */
    public void setDeviceTypeName(String deviceTypeName) {
        this.deviceTypeName = deviceTypeName;
    }
    /**
     * @return Returns the faultTime.
     */
    public String getFaultTime() {
        return faultTime;
    }
    /**
     * @param faultTime The faultTime to set.
     */
    public void setFaultTime(String faultTime) {
        this.faultTime = faultTime;
    }
    /**
     * @return Returns the msgID.
     */
    public String getMsgID() {
        return msgID;
    }
    /**
     * @param msgID The msgID to set.
     */
    public void setMsgID(String msgID) {
        this.msgID = msgID;
    }
    /**
     * @return Returns the msgSrcID.
     */
    public String getMsgSrcID() {
        return msgSrcID;
    }
    /**
     * @param msgSrcID The msgSrcID to set.
     */
    public void setMsgSrcID(String msgSrcID) {
        this.msgSrcID = msgSrcID;
    }
    /**
     * @return Returns the msgTypeID.
     */
    public String getMsgTypeID() {
        return msgTypeID;
    }
    /**
     * @param msgTypeID The msgTypeID to set.
     */
    public void setMsgTypeID(String msgTypeID) {
        this.msgTypeID = msgTypeID;
    }
    /**
     * @return Returns the msgTypeName.
     */
    public String getMsgTypeName() {
        return msgTypeName;
    }
    /**
     * @param msgTypeName The msgTypeName to set.
     */
    public void setMsgTypeName(String msgTypeName) {
        this.msgTypeName = msgTypeName;
    }
    /**
     * @return Returns the severityName.
     */
    public String getSeverityName() {
        return severityName;
    }
    /**
     * @param severityName The severityName to set.
     */
    public void setSeverityName(String severityName) {
        this.severityName = severityName;
    }
    
}

转换邮件信息的类EmailMessageTransformer.java:

package com.megaeyes.utils;
import java.io.IOException;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMultipart;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dom4j.Document;
import org.mule.transformers.AbstractTransformer;
import org.mule.umo.transformer.TransformerException;
import com.megaeyes.sms.gateway.databean.MessageBean;
/**
* BEAN转换类
* 
* @author sillycat.luo
* 
*/
public class EmailMessageTransformer extends AbstractTransformer {
protected Log log = LogFactory.getLog(EmailMessageTransformer.class);
public EmailMessageTransformer() {
// 初始化要注册的对象类型
registerSourceType(MimeBodyPart.class);
registerSourceType(Message.class);
registerSourceType(String.class);
setReturnClass(String.class);
}
/**
* 实际调用转化类的方法
*/
protected Object doTransform(Object src, String encoding)
   throws TransformerException {
MimeBodyPart mail = null;
if (src instanceof MimeBodyPart) {
   mail = (MimeBodyPart) src;
} else {
   log.error("email transfer should get MimeBodyPart src!");
}
String returnString = "";
MessageBean message = null;
try {
   Object o = mail.getContent();
   if (o instanceof String) {
    returnString = (String) o;
   } else if (o instanceof MimeMultipart) {
    MimeMultipart mime = (MimeMultipart) o;
    if (mime != null) {
     BodyPart body = mime.getBodyPart(0);
     if (body != null) {
      returnString = (String) body.getContent();
     }
    }
   } else {
    log
      .error("there is unknow part from the MimebodyPart.getContent");
   }
} catch (IOException e) {
   log.error(e);
} catch (MessagingException e) {
   log.error("e");
}
// transform string 2 object
message = transFromString2Message(returnString);
return message;
}
/**
* 转化类的工具类
* 
* @param src
*            String like <root><name>sillycat.luo</name></root>
* @return MessageBean Object
*/
private MessageBean transFromString2Message(String src) {
MessageBean message = null;
if (StringUtil.isBlank(src)) {
   log.error("src 2 transfer can't be null");
   return message;
}
Document doc = XmlFileUtil.getDocumentSaxByXmlStr(src);
if (doc != null) {
   message = new MessageBean();
   message.setMsgSrcID(XmlFileUtil.getStringValue("MsgSrcID", doc));
   message.setMsgTypeID(XmlFileUtil.getStringValue("FaultType", doc));
   message
     .setDeviceName(XmlFileUtil
       .getStringValue("DeviceName", doc));
   message.setDeviceTypeName(XmlFileUtil.getStringValue("DeviceType",
     doc));
   message.setDeviceIP(XmlFileUtil.getStringValue("DeviceIp", doc));
   message.setMsgTypeName(XmlFileUtil.getStringValue("FaultTypeName",
     doc));
   message.setMsgID(XmlFileUtil.getStringValue("FaultID", doc));
   message
     .setSeverityName(XmlFileUtil
       .getStringValue("Severity", doc));
   message.setFaultTime(XmlFileUtil.getStringValue("FaultTime", doc));
} else {
   log.error("xml doc string dom4j parse error!");
}
return message;
}
}

最主要的配置文件拉，email-config.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mule-configuration PUBLIC "-//MuleSource //DTD mule-configuration XML V1.0//EN"
                                "http://mule.mulesource.org/dtds/mule-configuration.dtd">
<mule-configuration id="Mule_Echo_Sample" version="1.0">
<description>This is the email mule ESB system</description>
<connector name="activeMQConnector"
className="org.mule.providers.jms.JmsConnector">
<properties>
   <property name="connectionFactoryJndiName"
    value="ConnectionFactory" />
   <property name="jndiInitialFactory"
    value="com.megaeyes.utils.ActiveMQInitialContextFactory" />
   <property name="specification" value="1.1" />
   <property name="jndiDestinations" value="true" />
   <property name="jndiProviderUrl"
    value="tcp://localhost:61616" />
   <map name="connectionFactoryProperties">
    <property name="brokerURL"
     value="tcp://localhost:61616" />
   </map>
</properties>
</connector>
<transformers>
<transformer name="JMSMessageToString"
   className="com.megaeyes.utils.JMSMessageTransformer"
   returnClass="java.lang.String" />
<transformer name="HttpRequestToSoapRequest"
   className="org.mule.providers.soap.transformers.HttpRequestToSoapRequest" />
<transformer name="EmailMessageTransformer"
   className="com.megaeyes.utils.EmailMessageTransformer">
   <properties>
    <property name="checkFrequency" value="2000" />
    <property name="deleteReadMessages" value="true" />
   </properties>
</transformer>
</transformers>
<model name="emailSample">
<mule-descriptor name="MailUM"
   implementation="com.megaeyes.service.impl.EmailManagerImpl">
   <inbound-router>
    <endpoint address="pop3://carl:[email protected]"
     transformers="EmailMessageTransformer" />
   </inbound-router>
   <outbound-router>
    <router
     className="org.mule.routing.outbound.OutboundPassThroughRouter">
     <endpoint address="jms://ConnectionFactory"
      connector="activeMQConnector" />
    </router>
   </outbound-router>
</mule-descriptor>
<!-- 
   <mule-descriptor name="ReSumeUM"
   implementation="com.megaeyes.service.impl.EmailManagerImpl">
   <inbound-router>
   <endpoint address="jms://ConnectionFactory"
   connector="activeMQConnector" transformers="JMSMessageToString"/>
   </inbound-router>
   <outbound-router>    
   <router
   className="org.mule.routing.outbound.OutboundPassThroughRouter">
   <endpoint address="stream://System.out" />
   </router>
   </outbound-router>
   </mule-descriptor>
-->
</model>
</mule-configuration>

一个批处理执行文件，email.bat:

@echo off
call "%MULE_HOME%\bin\mule.bat" -config .\email-config.xml

这样就可以运行了，启动后会拦截所有发送到[email protected]的邮件内容，然后拼装成为MessageBean.java放置在activeMQ的
queue里面。