WSO2 ESB 4.6.0 中 Spring Mediator 的工作示例 [英] Working example on Spring Mediator in WSO2 ESB 4.6.0

问题描述

您好，我正在 WSO2 ESB 4.6.0 中使用 Spring Mediator，使用 this 和 这个教程

Hi i am working on Spring Mediator in WSO2 ESB 4.6.0, using this and this tutorial

我收到如下错误:

ERROR - SpringMediator Cannot look up Spring configuration conf/sample/resources/spring/springsample.xml

ERROR - SpringMediatorCannot reference application context with key : conf/sample/resources/spring/springsample.xml

你能解释一下如何解决这个问题吗?

Could you please explain me how to solve this.

推荐答案

我要按如下方式进行，

该类应扩展 AbstractMediator 并覆盖 mediate() 方法，如下所示，

The class should extends AbstractMediator and override the mediate() method as follows,

package com.test.spring.mediator.workingexampleonspringmediator;

import org.apache.synapse.MessageContext;
import org.apache.synapse.mediators.AbstractMediator;

public class HelloWorld extends AbstractMediator{

           private String message;   
       public void setMessage(String message){
          this.message  = message;
       }

       public boolean mediate(MessageContext arg0) {

          System.out.println("HELLO "+message);
          return true;
    }
}

然后将jar放到[ESBHOME]/repository/components/lib文件夹中

Then place the jar in [ESBHOME]/repository/components/lib folder

在中介方法中，它会打印一条带有参数的消息，例如 HELLO 'arg'

In mediate method it prints a message with the argument like HELLO 'arg'

我在注册表中添加了以下文件(/_system/config/repository/spring/springtest.xml),

And I added the following file to registry (/_system/config/repository/spring/springtest.xml),

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC  "-//SPRING//DTD BEAN//EN"
        "http://www.springframework.org/dtd/spring-beans.dtd"> 
<beans>     
   <bean id="springtest" class="com.test.spring.mediator.workingexampleonspringmediator.HelloWorld"  singleton="false">
   <property name="message"><value>ISURU</value></property>
   </bean>
</beans>

我的代理如下，

<proxy xmlns="http://ws.apache.org/ns/synapse" name="testSpring" transports="https,http" statistics="disable" trace="disable" startOnLoad="true">
   <target>
      <inSequence>
         <log level="full">
            <property name="START" value="__________________________"/>
         </log>
         <spring:spring xmlns:spring="http://ws.apache.org/ns/synapse" bean="springtest" key="conf:/repository/spring/springtest.xml"/>
         <log level="full">
            <property name="END" value="______________________"/>
         </log>
      </inSequence>
   </target>
   <description></description>
</proxy>

在代理中可以看到bean=[springtest.xml的bean id]和class=class的限定名

在我的 ESB 终端中，我使用 springtest.xml 中的给定属性值输出了以下内容，

In my ESB terminal, I got the following out put with the given property value in springtest.xml,

[2013-11-07 17:38:30,654]  INFO - LogMediator To: /services/testSpring.testSpringHttpSoap12Endpoint, WSAction: urn:mediate, SOAPAction: urn:mediate, MessageID: urn:uuid:bcae82e9-4027-43c5-bd7a-cbfa885aaf33, Direction: request, START = __________________________, Envelope: <?xml version='1.0' encoding='utf-8'?><soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope"><soapenv:Body/></soapenv:Envelope>
HELLO ISURU
[2013-11-07 17:38:30,692]  INFO - LogMediator To: /services/testSpring.testSpringHttpSoap12Endpoint, WSAction: urn:mediate, SOAPAction: urn:mediate, MessageID: urn:uuid:bcae82e9-4027-43c5-bd7a-cbfa885aaf33, Direction: request, END = ______________________, Envelope: <?xml version='1.0' encoding='utf-8'?><soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope"><soapenv:Body/></soapenv:Envelope>

您必须在将 jar 放入 repository/components/lib 后重新启动 ESB

You must restart the ESB after placing the jar in repository/components/lib

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