RemoteConnectFailureException while trying to access a Service Using Burlap remoting

[Anujkumar1516]

Hi,
I was trying the example given in the book :Spring In Action Chapter 8 on Remoting.
I want to send data remotely from my CitationService to my Client. But I am getting the following exceptions:

Exception in thread "main" org.springframework.remoting.RemoteConnectFailureException: Cannot connect to Burlap remote service at [http://localhost:8080/citation/citation.service]; nested exception is java.net.ConnectException: Connection refused: connect
	at org.springframework.remoting.caucho.BurlapClientInterceptor.convertBurlapAccessException(BurlapClientInterceptor.java:178)
	at org.springframework.remoting.caucho.BurlapClientInterceptor.invoke(BurlapClientInterceptor.java:153)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy1.getCitationForVehicle(Unknown Source)
	at com.tickettodrive.rmi.RmiClient.main(RmiClient.java:16)
Caused by: java.net.ConnectException: Connection refused: connect
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
	at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
	at java.net.Socket.connect(Socket.java:519)
	at java.net.Socket.connect(Socket.java:469)
	at sun.net.NetworkClient.doConnect(NetworkClient.java:157)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
	at sun.net.www.http.HttpClient.<init>(HttpClient.java:233)
	at sun.net.www.http.HttpClient.New(HttpClient.java:306)
	at sun.net.www.http.HttpClient.New(HttpClient.java:323)
	at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:788)
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:729)
	at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:654)
	at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:832)
	at com.caucho.burlap.client.BurlapProxy.invoke(BurlapProxy.java:131)
	at $Proxy0.getCitationForVehicle(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.remoting.caucho.BurlapClientInterceptor.invoke(BurlapClientInterceptor.java:147)
	... 4 more

I am using hessian-3.1.3.jar with Spring 2.5.6
My desktop firewall is turned off.
I am using eclipse 3.4.1 with Tomcat 5.5


I have used the following configurations:

To Define a service:
1) CitationServiceImpl.java

public class CitationServiceImpl implements CitationService {
//   private static final Logger LOGGER = Logger
//                     .getLogger(CitationServiceImpl.class);

	
   public CitationServiceImpl() {}



public Citation[] getCitationForVehicle(String state, String plateNumber) {
	Citation[] citations = new Citation[2];
    // TODO - implement real citation lookup. For now, return dummy values
    citations[0] = new Citation();
    citations[0].setDate(new Date(103, 2, 3)); // yeah, I know it's
    // deprecated.
    citations[0].setViolationCode("PKG123");
    citations[0].setDescription("Parked blocking a fire hydrant");
    citations[1] = new Citation();
    citations[1].setDate(new Date(105, 6, 9)); // yeah, I know it's
    // deprecated.
    citations[1].setViolationCode("SPD110");
    citations[1].setDescription("Driving 98MPH in a school zone");

    return citations;
}


}

My Service side XML ttd-burlap-service.xml:

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
        
  <bean id="citationService" class="com.tickettodrive.CitationServiceImpl" />
  
  <!-- 
    An RMI service exporter, as discussed in section 8.2.2 and shown on 
    page 315.
   -->
  <bean class="org.springframework.remoting.caucho.BurlapServiceExporter">
    <property name="service" ref="citationService"/>
    <property name="serviceInterface"
        value="com.tickettodrive.CitationService"/>
  </bean>
</beans>

My Client Class:

public class BurlapClient {
   public static void main(String[] args) {
      ApplicationContext ctx = new ClassPathXmlApplicationContext(
                        "classpath:com/tickettodrive/burlap/ttd-burlap-client.xml");

      CitationService cs = (CitationService) ctx.getBean("citationService");

      Citation[] citations = cs.getCitationForVehicle("TX", "J55DNY");

      for (int i = 0; i < citations.length; i++) {
         Citation citation = citations[i];
         System.out.println(i + ".  " + citation.getViolationCode() + " - "
                           + citation.getDescription());
      }
   }
}

My ttd-burlap-client.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

<!--  <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">-->
<!--    <property name="location" value="ttd.properties" />-->
<!--  </bean>-->
        
  <!-- 
    BurlapProxyFactoryBean to wire in a Burlap service.
    
    From section 8.3.1, page 317. Notice, that I'm using the short-hand
    value attribute here, while the book shows the long-hand <value>
    element. I had intended for the book to use the short-hand form, as
    shown below, but didn't catch this until the book was already typeset
    and it was too late to change.
   -->  
  <bean id="citationService" 
      class="org.springframework.remoting.caucho.BurlapProxyFactoryBean">
    <property name="serviceUrl" 
        value="http://localhost:8080/citation/citation.service" />
    <property name="serviceInterface" value="com.tickettodrive.CitationService" />
  </bean>

</beans>

My web.xml looks like:

<?xml version="1.0" encoding="ISO-8859-1"?>

<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee web-app_2_4.xsd"
    version="2.4">
    
  <servlet>
    <servlet-name>citation</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>citation</servlet-name>
    <url-pattern>*.service</url-pattern>
  </servlet-mapping>
</web-app>

And finally my citation-servlet.xml looks like:

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

  <bean id="citationService" class="com.tickettodrive.CitationServiceImpl" />
    
  <!-- 
    Exports the citationService bean as a Burlap service.
    
    From section 8.3.2, page 322
    
    Notice, that I'm using the short-hand
    value attribute here, while the book shows the long-hand <value>
    element. I had intended for the book to use the short-hand form, as
    shown below, but didn't catch this until the book was already typeset
    and it was too late to change.    
   -->    
  <bean name="burlapCitationService" 
      class="org.springframework.remoting.caucho.BurlapServiceExporter">
    <property name="service" ref="citationService" />
    <property name="serviceInterface" value="com.tickettodrive.CitationService" />
  </bean>

  <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
    <property name="mappings">
      <props>
        <prop key="/citation.service">burlapCitationService</prop>
      </props>
    </property>
  </bean>
</beans>

Does any one have any Idea why I am getting the error. Am I doing something wrong? Is it something to do with Tomcat?

FYI : I was getting similar connection refused exception when i try to use RMI based remoting using spring. I havent been able to figure that out either.

[Anujkumar1516]

Does anybody has any idea on this issue?

[Anujkumar1516]

I think this forum has run out of steam. Does spring team people even visit this forum anymore?

[dejanp]

You get connection refused exception when the server is not running, at least not on the host:port you are trying to reach.