• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

Java WebServices with Axis

 
Greenhorn
Posts: 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi There,

I am using Axis 1.2 to implement Java web services. I have put a simple sample and it works with primitive data types in JBOSS.

Now I want to return a collection like ArrayList from a Web Service. When I try this, it shows me the following error.

{http://xml.apache.org/axis/}stackTrace:java.io.IOException: java.lang.IllegalArgumentException: object is not an instance of declaring class
at org.apache.axis.encoding.ser.BeanSerializer.serialize(BeanSerializer.java:275)
at org.apache.axis.encoding.SerializationContext.serializeActual(SerializationContext.java:1504)
at org.apache.axis.encoding.SerializationContext.serialize(SerializationContext.java:980)
at org.apache.axis.encoding.SerializationContext.serialize(SerializationContext.java:734)
at org.apache.axis.encoding.ser.ArraySerializer.serialize(ArraySerializer.java:425)
at org.apache.axis.encoding.SerializationContext.serializeActual(SerializationContext.java:1504)
at org.apache.axis.encoding.SerializationContext.serialize(SerializationContext.java:980)
at org.apache.axis.encoding.SerializationContext.serialize(SerializationContext.java:801)
at org.apache.axis.message.RPCParam.serialize(RPCParam.java:208)
at org.apache.axis.message.RPCElement.outputImpl(RPCElement.java:433)
at org.apache.axis.message.MessageElement.output(MessageElement.java:1208)
at org.apache.axis.message.SOAPBody.outputImpl(SOAPBody.java:139)
at org.apache.axis.message.SOAPEnvelope.outputImpl(SOAPEnvelope.java:478)
at org.apache.axis.message.MessageElement.output(MessageElement.java:1208)
at org.apache.axis.SOAPPart.writeTo(SOAPPart.java:315)
at org.apache.axis.SOAPPart.writeTo(SOAPPart.java:269)
at org.apache.axis.Message.writeTo(Message.java:539)
at org.apache.axis.transport.http.AxisServlet.sendResponse(AxisServlet.java:902)
at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:777)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:619)


Can anyone provide a sample on how to return a collection from a Web Service after serializing it.

Thanks
Krishnan
 
Author and all-around good cowpoke
Posts: 13078
6
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The answer is simple - NEVER try to return a collection, instead return an array. All collections have simple and fast methods to turn the contents into an array.

Think about it - does the client really need the functionality of a collection? Almost certainly not, and if they do there are always simple array to collection constructors.

Another point - what would a non-Java client do with a collection if you could get it serialized?

Bill
 
Bartender
Posts: 2968
6
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
See also
Axis2 support for collections
Implementing Collections In WebServices
 
reply
    Bookmark Topic Watch Topic
  • New Topic