package houseloanbroker;
…省略import
public class HouseLoanAgency extends ComponentSupport implements MessageExchangeListener {

//创建HouseLoanAgency服务
public HouseLoanAgency() {
setService(new Qname("urn:sample:soa:houseloanagency", "HouseLoanAgencyService"));
setEndpoint("houseLoanAgency");
}

//创建客户房屋数量信息
private static String[][] loanStatusList = { 
 {"Zhang San","0"},
 {"Li Si","1"},
 {"Wang Wu","2"},
 {"Zhao Liu","3"}
};

//onMessageExchange不停地监听请求消息
Public void onMessageExchange(MessageExchange exchange) throws MessagingException {
//接收到消息交换（请求—响应类型）
InOut inOut = (InOut) exchange;

//如果消息交换的状态为“done”，则返回
if (inOut.getStatus() == ExchangeStatus.DONE) {
return;
//如果消息交换的状态为“error”，也返回
} else if (inOut.getStatus() == ExchangeStatus.ERROR) {
return;
}
try {
    //将消息交换的输入信息转换为XML的document对象
    Document doc = (Document) new SourceTransformer().toDOMNode(inOut.getInMessage());

    //得到节点为“name”的节点值
    String name = textValueOfXPath(doc, "//*[local-name()='name']");

String operation = null;
if (inOut.getOperation() != null) {
     operation = inOut.getOperation().getLocalPart();
} else {
     operation = doc.getDocumentElement().getLocalName();
}
String output;
//如果请求消息中的操作为“getHouseNumber”，那么创建返回带有
//客户房屋数量的返回消息“output”
If ("getHouseNumber".equals(operation)) {    
output = "<getHouseNumberResponse
xmlns=\"urn:sample:soa:houseloanagency\"><housenumber>" +
getHouseNumber(name) + "</housenumber>
</getHouseNumberResponse>";
}else {
throw new UnsupportedOperationException(operation);
}
//如果查询的房屋数量为-1，表示系统中没有该客户，
//那么返回没有该客户的错误信息
If(getHouseNumber(name) == -1)
{
Fault fault = inOut.createFault();
fault.setContent(new StringSource("<InvalidNAME
xmlns=\"urn:sample:soa:houseloanagency\">
<name>" +name + "</name></InvalidNAME>"));  
fail(inOut, fault);
 
} else
{
 //将正常的返回消息“output”返回给服务请求者
 NormalizedMessage answer = inOut.createMessage();
 answer.setContent(new StringSource(output));
 answer(inOut, answer);
}

} catch (Exception e) {
throw new MessagingException(e);
}
}

//通过姓名“name”得到房屋数量
private int getHouseNumber(String name)  {
 int houseNumber = -1;
 for (int I=0; I<loanStatusList.length; I++){
  String[] item = loanStatusList[I];
  String itemName = item[0];
  int itemNum = Integer.parseInt(item[1]);
  
  if (name.equalsIgnoreCase(itemName))
  {
   houseNumber = itemNum;
   break;
  }
 }
 
 return houseNumber;
}

//通过xpath得到节点值
protected String textValueOfXPath(Node node, String xpath) throws TransformerException {
CachedXPathAPI cachedXPathAPI = new CachedXPathAPI();
NodeIterator iterator = cachedXPathAPI.selectNodeIterator(node, xpath);
Node root = iterator.nextNode();
if (root instanceof Element) {
Element element = (Element) root;
if (element == null) {
return "";
}
String text = DOMUtil.getElementText(element);
return text;
}
else if (root != null) {
return root.getNodeValue();
} else {
return null;
}
}
}

 package loanbroker;
import javax.jbi.messaging.ExchangeStatus;
import javax.jbi.messaging.InOut;
import javax.jbi.messaging.MessageExchange;
import javax.jbi.messaging.MessagingException;
import javax.jbi.messaging.NormalizedMessage;
import javax.xml.namespace.Qname;
import org.apache.servicemix.MessageExchangeListener;
import org.apache.servicemix.components.util.ComponentSupport;
import org.apache.servicemix.jbi.jaxp.StringSource;

public class Bank extends ComponentSupport implements MessageExchangeListener {

private double rate;
private double firstPaidRatio;

//创建Bank服务
public Bank(int number) {
setService(new Qname("urn:logicblaze:soa:bank", "Bank" + number));
setEndpoint("bank");
}

//监听请求消息，并将带有贷款利率和首付比率的响应消息返回给服务请求者，贷款利率
//和首付比率是在servicemix.xml文件中配置的
Public void onMessageExchange(MessageExchange exchange) throws MessagingException {
 
InOut inOut = (InOut) exchange;
if (inOut.getStatus() == ExchangeStatus.DONE) {
      return;
} else if (inOut.getStatus() == ExchangeStatus.ERROR) {
      return;
}
System.err.println(getService().getLocalPart() + " requested");
try {
      String output = "<getLoanQuoteResponse xmlns=\"urn:logicblaze:soa:bank\"><rate>"
       + getRate() + "</rate><firstpaidratio>" + getFirstPaidRatio() + "</firstpaidratio>
       </getLoanQuoteResponse>";
      NormalizedMessage answer = inOut.createMessage();
      answer.setContent(new StringSource(output));
      answer(inOut, answer);
} catch (Exception e) {
      throw new MessagingException(e);
}
}

public double getFirstPaidRatio() {
  return firstPaidRatio;
}

public void setFirstPaidRatio(double firstPaidRatio) {
  this.firstPaidRatio = firstPaidRatio;
}

public double getRate() {
  return rate;
}

public void setRate(double rate) {
  this.rate = rate;
}
}