HessianServiceExporter Example

[Temujin_12]

I'm stuck trying to follow http://static.springframework.org/sp...ucho-protocols, to create a SOAP service.

Here are my files:

web.xml

<web-app>
  <servlet>
    <servlet-name>myapp-soap</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>myapp-soap</servlet-name>
    <url-pattern>/soap/*</url-pattern>
  </servlet-mapping>
</web-app>

myapp-soap-servlet.xml

<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 name="/MyApp" class="org.springframework.remoting.caucho.HessianServiceExporter">
        <property name="service">
            <ref bean="myAppService" />
        </property>
        <property name="serviceInterface" value="com.name.myapp.remote.service.MyAppRemoteService" />
    </bean>
    <!-- yes, this bean's class implements com.name.myapp.remote.service.MyAppRemoteService -->
    <bean id="myAppService" class="com.name.myapp.service.impl.MyAppServiceImpl">
        <property name="dao">
            <!-- wiring in my DAO here -->
        </property>
    </bean> 
</beans>

When I load this up, and goto the following URL (note it's loaded in the document root '/myapp/'):

http://localhost/myapp/soap/MyApp?WSDL

...I get the error:

Status 405 - HessianServiceExporter only supports POST requests

Fair enough. So I do the following from the command prompt:

wget --post-data="test" http://localhost/myapp/soap/MyApp?WSDL

...and I get the following in the logs:

org.springframework.web.servlet.PageNotFound  - No mapping found for HTTP request with URI [/myapp/soap/MyApp/] in DispatcherServlet with name 'myapp-soap'

Should "http://localhost/myapp/soap/MyApp?WSDL" (either POST or GET) work in getting the WSDL? If it should, what is going wrong here? If not, what is the proper way to get the WSDL?

[Temujin_12]

Hmmm... on further reading, I think I'm confused as to what Hessian even is (ie: it's not a SOAP implementation).

If I wire up a client as follows:

<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 name="serviceLoader" class="com.name.myapp.remote.test.ServiceLoader">
            <property name="service" ref="service"/>
       </bean>

        <bean id="service" class="org.springframework.remoting.caucho.HessianProxyFactoryBean">
		    <property name="serviceUrl" value="http://localhost/myapp/soap/MyApp"/>
		    <property name="serviceInterface" value="com.name.myapp.remote.service.MyAppRemoteService"/>
		</bean>
       
</beans>

...and make a remote call through the serviceLoader bean (ie: serviceLoader.getService().serviceMethod()) I get the following error:

com.caucho.hessian.io.HessianProtocolException: expected string at 0x6d

...which is a known issue with Spring using Hessian 3.2.1 (see http://jira.springframework.org/browse/SPR-5469).

Is there a way to wire up a SOAP service that's as easy as wiring up Hessian via some kind of service exporter?

[jpreston]

Temujin_12 ,

What about org.springframework.remoting.jaxws.SimpleJaxWsServ iceExporter in Spring 2.5.x? I think it's a SOAP service exporter.

Hope that helps,