HttpBinding+Static Rout Slip组件开发

今天写了一个组件，用HttpClient向HttpBinding发送XML文档。HttpBC接收到后，发送给Static Rout Slip组件，由这具路由器，把XML分别发送到两个组件中：echo组件显示该消息，response组件在接收到这个消息后，经过简单的处理后，生成一个返回消息。

HttpClient代码如下所示：

import java.io.*;
import java.net.URL;
import java.net.URLConnection;

/**
 * @version $Revision: 356269 $
 */
public class HttpClient {

    public static void main(String[] args) throws Exception {

        URLConnection connection = new URL("http://localhost:8192/Service/").openConnection();
        connection.setDoOutput(true);
        OutputStream os = connection.getOutputStream();

        // Post the request file.
        FileInputStream fis = new FileInputStream("D://servicemix//httptest//request.xml");
       
        //Buffer
        byte[] buf = new byte[256];
        for (int c = fis.read(buf); c != -1; c = fis.read(buf)) {
         os.write(buf,0,c);
        }
        os.close();
        fis.close();

        // Read the response.
        BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String inputLine;
        while ((inputLine = in.readLine()) != null) {
            System.out.println(inputLine);
        }
        in.close();

    }
}

而由Http BC组件与router 组件，还有echo组件，response组件的配置如下：

Assemble配置：

<?xml version="1.0" encoding="UTF-8"?>
<jbi xmlns="http://java.sun.com/xml/ns/jbi" version="1.0">
    
   <service-assembly>
     <identification>
       <name>http-staticrout-demo</name>
       <description>http-staticrout-demo</description>
     </identification>
     <service-unit>
       <identification>
         <name>engine-ldt-su</name>
         <description>Contains staticrout service</description>
       </identification>
       <target>
         <artifacts-zip>engine-su.zip</artifacts-zip>
         <component-name>servicemix-eip</component-name>
       </target>
     </service-unit>
     <service-unit>
       <identification>
         <name>binding-ldt-su</name>
         <description>Contains the binding</description>
       </identification>
       <target>
         <artifacts-zip>binding-su.zip</artifacts-zip>
         <component-name>servicemix-http</component-name>
       </target>
     </service-unit>
 <service-unit>
       <identification>
         <name>component-ldt-su</name>
         <description>component created by ldt</description>
       </identification>
       <target>
         <artifacts-zip>lwechoreponse-su.zip</artifacts-zip>
         <component-name>servicemix-lwcontainer</component-name>
       </target>
     </service-unit>
    </service-assembly>
   
</jbi>

HttpBinding 组件的SU如下所示：

<?xml version="1.0"?>
<beans xmlns:http="http://servicemix.apache.org/http/1.0"
       xmlns:demo="urn:servicemix:http-binding">

 <http:endpoint service="demo:simple-service"
       endpoint="simple-service"
                role="consumer"
                locationURI="http://localhost:8192/Service/"
                defaultMep="http://www.w3.org/2004/08/wsdl/in-out"
                  />
               
</beans>

EIP中的router组件的SU如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:eip="http://servicemix.apache.org/eip/1.0"
  xmlns:demo="urn:servicemix:http-binding"
  xmlns:test="http://ldt.com/test">

 <eip:static-routing-slip service="demo:simple-service" endpoint="simple-service">
  <eip:targets>
    <eip:exchange-target service="test:echo" />
    <eip:exchange-target service="test:response" />
  </eip:targets>
 </eip:static-routing-slip>
</beans>

而echo组件与response组件以POJO组件的形式，部署到LWContainer中，如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<!-- START SNIPPET: servicemix -->
<beans xmlns:my="http://ldt.com/test"
 xmlns:sm="http://servicemix.apache.org/config/1.0">
  <classpath>
    <location>.</location>
  </classpath>
  <sm:serviceunit id="jbi">
    <sm:activationSpecs>
     
      <sm:activationSpec service="my:echo">
        <sm:component>
          <bean class="org.apache.servicemix.components.util.EchoComponent" />
     </sm:component>
      </sm:activationSpec>
      <sm:activationSpec service="my:response">
        <sm:component>
          <bean class="ldt.com.staticrouter.ReceiverComponent" />
        </sm:component>
      </sm:activationSpec>
     
    </sm:activationSpecs>
  </sm:serviceunit>
     
</beans>

 

这个模型得以成功的意义在于：很容易把一个消息发送给多个组件，当业务流程改变时，要向多个组件发送消息时，只需要向router组件的配置文件进行修改，然后把相关的组件部署到ESB中，就完成了业务流程的改变。在我们项目中的应用有：当凤凰公司产品对一部份等级的用户进行下调时，就能用到。比如只向VIP与会员发送降价消息。则在发送消息之前，在router组件中设定VIP接收组件与会员接收组件就完成了业务流程的调整。