[ http://issues.apache.org/jira/browse/XMLRPC-89?page=all ]
Jochen Wiedmann closed XMLRPC-89:
---------------------------------
Resolution: Fixed
Ok, I have committed a partial solution.
First of all, let me explain what the problem is. The XML-RPC library is
working internally with certain classes only. For example, an object array, a
list, and a vector are all internally mapped to an object array. Likewise, a
Hashtable, and Properties, are mapped to a Map.
Now, when we call a method, we are checking the method parameters. If, for
example, the method has a vector as first parameter, then we convert the object
array to a vector. No problem here. The situation is quite different, if we
return a value: We do not now, whether the caller wants an object array, or a
vector.
In short, if the client calls a method
Vector method(Vector);
then the result will be an object array. (Although everything works fine on the
server.) The recommended solution is to use the ClientFactory: An
implementation, which is created by the ClientFactory, knows about the return
type and can apply the same conversion. See
http://svn.apache.org/repos/asf/webservices/xmlrpc/trunk/src/site/apt/advanced.apt
for details on the ClientFactory.
> cannot use Vector, Hashtable, etc as arguments of metheds in handler
> --------------------------------------------------------------------
>
> Key: XMLRPC-89
> URL: http://issues.apache.org/jira/browse/XMLRPC-89
> Project: XML-RPC
> Type: Bug
> Environment: xmlrpc3.0b1 nightlybuild
> Reporter: Zhi Han
> Assignee: Jochen Wiedmann
> Attachments: Req2.xml
>
> In handler, I have methods like
> public Vector getData(Vector req)
> {
> }
> public Vector pingHandler()
> {
> }
> On client side, I have code like:
> Vector req = new Vector();
> req.add("user");
> Vector params = new Vector(1);
> params.add(req);
> client.execute("handler.getData", params);
> I always got exception
> Jun 22, 2006 7:34:37 AM org.apache.xmlrpc.server.XmlRpcStreamServer execute
> SEVERE: execute: Error while performing request
> org.apache.xmlrpc.XmlRpcException: Illegal argument for method getData in
> class test.servlet.XMLRPCHandler
> at
> org.apache.xmlrpc.server.ReflectiveXmlRpcHandler.execute(ReflectiveXmlRpcHandler.java:71)
> at
> org.apache.xmlrpc.server.XmlRpcServerWorker.execute(XmlRpcServerWorker.java:43)
> at org.apache.xmlrpc.server.XmlRpcServer.execute(XmlRpcServer.java:67)
> at
> org.apache.xmlrpc.server.XmlRpcStreamServer.execute(XmlRpcStreamServer.java:196)
> at
> org.apache.xmlrpc.webserver.XmlRpcServletServer.execute(XmlRpcServletServer.java:91)
> at
> org.apache.xmlrpc.webserver.XmlRpcServlet.doPost(XmlRpcServlet.java:99)
> at test.servlet.XMLRPCServlet.doPost(XMLRPCServlet.java:217)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
> at
> org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
> at
> org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
> at
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
> at java.lang.Thread.run(Thread.java:536)
> Caused by:
> java.lang.IllegalArgumentException: argument type mismatch
> 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:324)
> at
> org.apache.xmlrpc.server.ReflectiveXmlRpcHandler.execute(ReflectiveXmlRpcHandler.java:65)
> at
> org.apache.xmlrpc.server.XmlRpcServerWorker.execute(XmlRpcServerWorker.java:43)
> at org.apache.xmlrpc.server.XmlRpcServer.execute(XmlRpcServer.java:67)
> at
> org.apache.xmlrpc.server.XmlRpcStreamServer.execute(XmlRpcStreamServer.java:196)
> at
> org.apache.xmlrpc.webserver.XmlRpcServletServer.execute(XmlRpcServletServer.java:91)
> at
> org.apache.xmlrpc.webserver.XmlRpcServlet.doPost(XmlRpcServlet.java:99)
> at test.servlet.XMLRPCServlet.doPost(XMLRPCServlet.java:217)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
> at
> org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
> at
> org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
> at
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
> at java.lang.Thread.run(Thread.java:536)
> While invoke pingHandler (new argument)
> I got
> org.apache.xmlrpc.client.XmlRpcClientException: Failed to parse servers
> response: Unexpected non-whitespace character data
> at
> org.apache.xmlrpc.client.XmlRpcStreamTransport.readResponse(XmlRpcStreamTransport.java:267)
> at
> org.apache.xmlrpc.client.XmlRpcStreamTransport.sendRequest(XmlRpcStreamTransport.java:216)
> at
> org.apache.xmlrpc.client.XmlRpcClientWorker.execute(XmlRpcClientWorker.java:53)
> at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:166)
> at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:136)
> at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:125)
> at MyXmlRpcClient.main(MyXmlRpcClient.java:32)
> Caused by:
> org.xml.sax.SAXParseException: Unexpected non-whitespace character data
> at
> org.apache.xmlrpc.parser.TypeParserImpl.characters(TypeParserImpl.java:79)
> at
> org.apache.xmlrpc.parser.RecursiveTypeParserImpl.characters(RecursiveTypeParserImpl.java:139)
> at org.apache.xmlrpc.parser.MapParser.characters(MapParser.java:79)
> at
> org.apache.xmlrpc.parser.RecursiveTypeParserImpl.characters(RecursiveTypeParserImpl.java:142)
> at
> org.apache.xmlrpc.parser.RecursiveTypeParserImpl.characters(RecursiveTypeParserImpl.java:142)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.characters(Unknown
> Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanContent(Unknown
> Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
> Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
> Source)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown
> Source)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown
> Source)
> at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown
> Source)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown
> Source)
> at
> org.apache.xmlrpc.client.XmlRpcStreamTransport.readResponse(XmlRpcStreamTransport.java:265)
> at
> org.apache.xmlrpc.client.XmlRpcStreamTransport.sendRequest(XmlRpcStreamTransport.java:216)
> at
> org.apache.xmlrpc.client.XmlRpcClientWorker.execute(XmlRpcClientWorker.java:53)
> at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:166)
> at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:136)
> at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:125)
> at MyXmlRpcClient.main(MyXmlRpcClient.java:32)
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