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Posted to soap-dev@ws.apache.org by "Todd D. Johnson" <to...@salarinc.com> on 2002/06/10 19:30:02 UTC
Problems with (De)Serializers w/ Code
I have attached code samples to the bottom. I am resending bc I did not see
my earlier message show up on the archives. I am using the following
environment
java 1.4
Tomcat 4.0.3
Soap 2.3
Xerces 1.4.4
I have written a simple class that implements not only the class functions,
but the serialization and deserialization as well. I am having problems
calling a simple function on the class that returns itself. Right now the
class has only one member (a string) and thus the marshall and unmarshall
functions are responsible for handling just that member. When a client
calls the function, apache tomcat loads the constructor, calls the function,
but never calls the marshall function (as reported through the apache
console). The only thing returned to the client is
Fault Code = SOAP-ENV:Server
Fault String = java.lang.NullPointerException
Does anyone have any ideas? I've gotten the simple soap examples to run
just fine. (And subsequently my code and descriptor are pretty identical)
It's pretty weird because I know that the marshall/unmarshall methods are
never being accessed by the server. The exception is being thrown at
(RPCJavaProvider.java:138) which seems to me that it can't find a reference
to my (de)serializer.
Another question: the only reference to the class GuideSerializer that is
made is at the client while building the call. Is this correct? Do I need
to somehow map GuideSerializer to the type Guide in the
DeploymentDescriptor???
Thanks,
Todd D. Johnson
Implementing server class:
public Guide getSampleGuide(int guideSeq){
System.out.println("Guide.getSampleGuide called");
setGuideName("Sample Tickler Guide");
//g.setGuideType("DefaultGuidePublishingAgentImpl");
System.out.println("Guide.getSampleGuide exiting");
return this;
}
DeploymentDescriptor:
<isd:service xmlns:isd="http://xml.apache.org/xml-soap/deployment"
id="urn:tickler">
<isd:provider type="java" scope="Request" methods="getSampleGuide">
<isd:java class="com.salarinc.tickler.foundation.Guide"
static="false"/>
</isd:provider>
<isd:faultListener>org.apache.soap.server.DOMFaultListener</isd:faultListene
r>
<isd:mappings>
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:x="urn:tickler-guide" qname="x:guide"
javaType="com.salarinc.tickler.foundation.Guide"
java2XMLClassName="org.apache.soap.encoding.soapenc.BeanSerializer"
xml2JavaClassName="org.apache.soap.encoding.soapenc.BeanSerializer"/>
</isd:mappings>
</isd:service>
Client code:
Integer x=new Integer(7);
Integer y=new Integer(8);
final String urn= "urn:tickler";
Vector params = new Vector();
URL url = null;
try{
url = new URL("http://" + serverhost + ":" + serverport+
soapservlet);
}catch(java.net.MalformedURLException e){
System.out.println("Error creating a url: "+e.getMessage());
}
ServiceManagerClient client = new ServiceManagerClient(url);
try{
String[] apps = client.list();
System.out.println("Deployed Services at "+url.toString()+"
are:");
for(int i = 0; i < apps.length; i++){
System.out.println("\t"+apps[i]);
DeploymentDescriptor desc = client.query(apps[i]);
System.out.println("\t\tMethods for
"+desc.getScriptFilenameOrString()+" are:");
String[] methods = desc.getMethods();
for(int j = 0; j < methods.length; j++){
System.out.println("\t\t\t"+methods[j]);
}
}
}catch(SOAPException e){
System.out.println("Could not connect to ServiceManager at
"+url.toString()+": "+e.getMessage());
}
// Build the call.
Call call = new Call();
SOAPHTTPConnection shc = new SOAPHTTPConnection ();
shc.setMaintainSession (true);
call.setSOAPTransport(shc);
call.setTargetObjectURI(urn);
call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
call.setMethodName("getSampleGuide");
params.addElement(new Parameter("guideSeq" , Integer.class, new
Integer(7), null));
call.setParams(params);
GuideSerializer ser_0 = new GuideSerializer();
SOAPMappingRegistry smr = call.getSOAPMappingRegistry();
smr.mapTypes("http://schemas.xmlsoap.org/soap/encoding/", new QName(
"urn:tickler-guide", "guide"), Guide.class, ser_0, ser_0);
call.setSOAPMappingRegistry(smr);
Response resp = null;
try{
resp = call.invoke(url,"");
}catch(org.apache.soap.SOAPException e){
System.out.println("Got a soap exception while invoking
"+e.getMessage());
System.exit(1);
}
if (resp.generatedFault()) {
Fault fault = resp.getFault();
System.out.println("Ouch, the call failed: ");
System.out.println(" Fault Code = " + fault.getFaultCode());
System.out.println(" Fault String = " +
fault.getFaultString());
} else {
Parameter result = resp.getReturnValue();
if(result.getType() == Guide.class){
Guide g = (Guide)result.getValue();
System.out.println("The guide name is " + g.getGuideName());
}else{
System.out.println("ERROR server returned a
:"+result.getType().toString());
System.exit(1);
}
}
Serializer/Deserializer
public Bean unmarshall(String inScopeEncStyle, QName elementType,
Node src, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
throws IllegalArgumentException
{
Element root = (Element)src;
Element tempEl = DOMUtils.getFirstChildElement(root);
Guide target;
try
{
target =
(Guide)Guide.class.newInstance
();
}
catch (Exception e)
{
throw new IllegalArgumentException("Problem instantiating bean: "
+ e.getMessage());
}
while (tempEl != null)
{
Bean paramBean = xjmr.unmarshall(inScopeEncStyle,
RPCConstants.Q_ELEM_PARAMETER,
tempEl, ctx);
Parameter param = (Parameter)paramBean.value;
String tagName = tempEl.getTagName();
if (tagName.equals("name"))
{
target.setGuideName((java.lang.String)param.getValue());
}
tempEl = DOMUtils.getNextSiblingElement(tempEl);
}
return new Bean(Guide.class, target);
}
public void marshall(String inScopeEncStyle, Class javaType,
Object src, Object context, Writer sink,
NSStack nsStack, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
throws IllegalArgumentException, IOException
{
nsStack.pushScope();
SoapEncUtils.generateStructureHeader(inScopeEncStyle, javaType,
context,
sink, nsStack, xjmr);
sink.write(StringUtils.lineSeparator);
Guide src2 = (Guide)src;
Parameter param;
param = new Parameter("namme", String.class, new String
("Test"), null);
xjmr.marshall(inScopeEncStyle, Parameter.class, param, null,
sink, nsStack, ctx);
sink.write(StringUtils.lineSeparator);
sink.write("</" + context + '>');
nsStack.popScope();
}
server gunk:
</SHTTP/1.1 500 Internal Server Error Content-Type: text/xml; charset=utf-8
Content-Length: 3369 Date: Mon, 10 Jun 2002 14:24:09 GMT Server: Apache
Tomcat/4.0.2 (HTTP/1.1 Connector) Set-Cookie:
JSESSIONID=4F9E94EB66517ADC4DEAD0E2AE6E5966;Pa<?xml version='1.0'
encoding='UTF-8'?> <SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <SOAP-ENV:Body>
<SOAP-ENV:Fault> <faultcode>SOAP-ENV:Server</faultcode>
<faultstring>java.lang.NullPointerException</faultstring>
<faultactor>/soap/servlet/rpcrouter</faultactor> <detail>
<stackTrace>[SOAPException: faultCode=SOAP-ENV:Server;
msg=java.lang.NullPointerException] at
org.apache.soap.providers.RPCJavaProvider.invoke(RPCJavaProvider.java:138)
at
org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.java:35
4) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247) at
org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicat
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:243) at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66) at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:190) at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66) at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
46) at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64) at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
) at org.ndardPipeline.invokeNext(StandardPipeline.java:566) at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:170) at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64) at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
) at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64) at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64) at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174) at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66) at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.CainerBase.java:943) at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
1012) at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107
) at java.lang.Thread.run(Thread.java:536) </stackTrace> </detail>
</SOAP-ENV:Fault>
Re: Problems with (De)Serializers w/ Code
Posted by Sanjiva Weerawarana <sa...@watson.ibm.com>.
I put that WSDL in there as I generated the addressbook2 client
using a WSDL stub generator (our own old WSDL Toolkit if I recall).
I agree we should take it out from there as Apache SOAP doesn't
do any WSDL stuff!
Sanjiva.
----- Original Message -----
From: "Scott Nichol" <sn...@scottnichol.com>
To: <so...@xml.apache.org>
Sent: Tuesday, June 11, 2002 4:03 AM
Subject: Re: Problems with (De)Serializers w/ Code
> > What is the deal with WSDL? I noticed that the AddressBook2 sample has
a
> > .wsdl file in the sample directory, but nothing seems to really
reference
> > it. How do you lock an object or service to a WSDL file? Does apache
soap
> > not really support .wsdl (and axis does?)
>
> Frankly, I do not know what the WSDL file is doing there (nor do I know
whether
> it is accurate!). Apache SOAP does not consumer or generate WSDL. Axis
does
> both. However, the WSDL generator in Axis can generate WSDL for classes
you use
> as Apache SOAP services (well, it worked for me when I tried it once),
which is
> great if you need to support clients that expect WSDL.
>
> Scott Nichol
>
Re: Problems with (De)Serializers w/ Code
Posted by Sanjiva Weerawarana <sa...@watson.ibm.com>.
I put that WSDL in there as I generated the addressbook2 client
using a WSDL stub generator (our own old WSDL Toolkit if I recall).
I agree we should take it out from there as Apache SOAP doesn't
do any WSDL stuff!
Sanjiva.
----- Original Message -----
From: "Scott Nichol" <sn...@scottnichol.com>
To: <so...@xml.apache.org>
Sent: Tuesday, June 11, 2002 4:03 AM
Subject: Re: Problems with (De)Serializers w/ Code
> > What is the deal with WSDL? I noticed that the AddressBook2 sample has
a
> > .wsdl file in the sample directory, but nothing seems to really
reference
> > it. How do you lock an object or service to a WSDL file? Does apache
soap
> > not really support .wsdl (and axis does?)
>
> Frankly, I do not know what the WSDL file is doing there (nor do I know
whether
> it is accurate!). Apache SOAP does not consumer or generate WSDL. Axis
does
> both. However, the WSDL generator in Axis can generate WSDL for classes
you use
> as Apache SOAP services (well, it worked for me when I tried it once),
which is
> great if you need to support clients that expect WSDL.
>
> Scott Nichol
>
Re: Problems with (De)Serializers w/ Code
Posted by Scott Nichol <sn...@scottnichol.com>.
> What is the deal with WSDL? I noticed that the AddressBook2 sample has a
> .wsdl file in the sample directory, but nothing seems to really reference
> it. How do you lock an object or service to a WSDL file? Does apache soap
> not really support .wsdl (and axis does?)
Frankly, I do not know what the WSDL file is doing there (nor do I know whether
it is accurate!). Apache SOAP does not consumer or generate WSDL. Axis does
both. However, the WSDL generator in Axis can generate WSDL for classes you use
as Apache SOAP services (well, it worked for me when I tried it once), which is
great if you need to support clients that expect WSDL.
Scott Nichol
Re: Problems with (De)Serializers w/ Code
Posted by Scott Nichol <sn...@scottnichol.com>.
> What is the deal with WSDL? I noticed that the AddressBook2 sample has a
> .wsdl file in the sample directory, but nothing seems to really reference
> it. How do you lock an object or service to a WSDL file? Does apache soap
> not really support .wsdl (and axis does?)
Frankly, I do not know what the WSDL file is doing there (nor do I know whether
it is accurate!). Apache SOAP does not consumer or generate WSDL. Axis does
both. However, the WSDL generator in Axis can generate WSDL for classes you use
as Apache SOAP services (well, it worked for me when I tried it once), which is
great if you need to support clients that expect WSDL.
Scott Nichol
RE: Problems with (De)Serializers w/ Code
Posted by "Todd D. Johnson" <to...@salarinc.com>.
Hey, thanks so much for your help. I think I just needed someone to lay it
out for me. I have, however come across some questions:
What is the deal with WSDL? I noticed that the AddressBook2 sample has a
.wsdl file in the sample directory, but nothing seems to really reference
it. How do you lock an object or service to a WSDL file? Does apache soap
not really support .wsdl (and axis does?)
Again, thank you so much
Todd
-----Original Message-----
From: Scott Nichol [mailto:snicholnews@scottnichol.com]
Sent: Monday, June 10, 2002 4:53 PM
To: soap-dev@xml.apache.org
Subject: Re: Problems with (De)Serializers w/ Code
Todd,
You basically figured this out yourself:
>>>>
Another question: the only reference to the class GuideSerializer that is
made is at the client while building the call. Is this correct? Do I need
to somehow map GuideSerializer to the type Guide in the
DeploymentDescriptor???
<<<<
If, as your original message claims, Guide implements the Serializer and
Deserializer interfaces, it must be listed as the [de-]serializing class in
your
deployement descriptor, as in
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:x="urn:tickler-guide" qname="x:guide"
javaType="com.salarinc.tickler.foundation.Guide"
java2XMLClassName="com.salarinc.tickler.foundation.Guide"
xml2JavaClassName="com.salarinc.tickler.foundation.Guide"/>
It looks, however, like you have a separate class for [de-]serialization,
GuideSerializer. In that case, use
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:x="urn:tickler-guide" qname="x:guide"
javaType="com.salarinc.tickler.foundation.Guide"
java2XMLClassName="com.salarinc.tickler.foundation.GuideSerializer"
xml2JavaClassName="com.salarinc.tickler.foundation.GuideSerializer"/>
Scott Nichol
----- Original Message -----
From: "Todd D. Johnson" <to...@salarinc.com>
To: <so...@xml.apache.org>
Sent: Monday, June 10, 2002 1:30 PM
Subject: Problems with (De)Serializers w/ Code
> I have attached code samples to the bottom. I am resending bc I did not
see
> my earlier message show up on the archives. I am using the following
> environment
> java 1.4
> Tomcat 4.0.3
> Soap 2.3
> Xerces 1.4.4
>
> I have written a simple class that implements not only the class
functions,
> but the serialization and deserialization as well. I am having problems
> calling a simple function on the class that returns itself. Right now the
> class has only one member (a string) and thus the marshall and unmarshall
> functions are responsible for handling just that member. When a client
> calls the function, apache tomcat loads the constructor, calls the
function,
> but never calls the marshall function (as reported through the apache
> console). The only thing returned to the client is
>
> Fault Code = SOAP-ENV:Server
> Fault String = java.lang.NullPointerException
>
> Does anyone have any ideas? I've gotten the simple soap examples to run
> just fine. (And subsequently my code and descriptor are pretty identical)
>
> It's pretty weird because I know that the marshall/unmarshall methods are
> never being accessed by the server. The exception is being thrown at
> (RPCJavaProvider.java:138) which seems to me that it can't find a
reference
> to my (de)serializer.
>
> Another question: the only reference to the class GuideSerializer that is
> made is at the client while building the call. Is this correct? Do I
need
> to somehow map GuideSerializer to the type Guide in the
> DeploymentDescriptor???
>
> Thanks,
>
> Todd D. Johnson
>
> Implementing server class:
>
> public Guide getSampleGuide(int guideSeq){
> System.out.println("Guide.getSampleGuide called");
> setGuideName("Sample Tickler Guide");
> //g.setGuideType("DefaultGuidePublishingAgentImpl");
> System.out.println("Guide.getSampleGuide exiting");
> return this;
> }
>
> DeploymentDescriptor:
>
> <isd:service xmlns:isd="http://xml.apache.org/xml-soap/deployment"
> id="urn:tickler">
> <isd:provider type="java" scope="Request" methods="getSampleGuide">
> <isd:java class="com.salarinc.tickler.foundation.Guide"
> static="false"/>
> </isd:provider>
>
>
<isd:faultListener>org.apache.soap.server.DOMFaultListener</isd:faultListene
> r>
> <isd:mappings>
> <isd:map
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
> xmlns:x="urn:tickler-guide" qname="x:guide"
> javaType="com.salarinc.tickler.foundation.Guide"
>
> java2XMLClassName="org.apache.soap.encoding.soapenc.BeanSerializer"
>
> xml2JavaClassName="org.apache.soap.encoding.soapenc.BeanSerializer"/>
> </isd:mappings>
> </isd:service>
>
> Client code:
>
> Integer x=new Integer(7);
> Integer y=new Integer(8);
> final String urn= "urn:tickler";
>
> Vector params = new Vector();
>
> URL url = null;
> try{
> url = new URL("http://" + serverhost + ":" + serverport+
> soapservlet);
> }catch(java.net.MalformedURLException e){
> System.out.println("Error creating a url: "+e.getMessage());
> }
>
> ServiceManagerClient client = new ServiceManagerClient(url);
> try{
> String[] apps = client.list();
> System.out.println("Deployed Services at "+url.toString()+"
> are:");
> for(int i = 0; i < apps.length; i++){
> System.out.println("\t"+apps[i]);
> DeploymentDescriptor desc = client.query(apps[i]);
> System.out.println("\t\tMethods for
> "+desc.getScriptFilenameOrString()+" are:");
> String[] methods = desc.getMethods();
> for(int j = 0; j < methods.length; j++){
> System.out.println("\t\t\t"+methods[j]);
> }
> }
> }catch(SOAPException e){
> System.out.println("Could not connect to ServiceManager at
> "+url.toString()+": "+e.getMessage());
> }
>
> // Build the call.
> Call call = new Call();
> SOAPHTTPConnection shc = new SOAPHTTPConnection ();
> shc.setMaintainSession (true);
> call.setSOAPTransport(shc);
> call.setTargetObjectURI(urn);
>
> call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
>
> call.setMethodName("getSampleGuide");
>
> params.addElement(new Parameter("guideSeq" , Integer.class, new
> Integer(7), null));
>
> call.setParams(params);
> GuideSerializer ser_0 = new GuideSerializer();
> SOAPMappingRegistry smr = call.getSOAPMappingRegistry();
> smr.mapTypes("http://schemas.xmlsoap.org/soap/encoding/", new QName(
> "urn:tickler-guide", "guide"), Guide.class, ser_0, ser_0);
> call.setSOAPMappingRegistry(smr);
> Response resp = null;
> try{
> resp = call.invoke(url,"");
> }catch(org.apache.soap.SOAPException e){
> System.out.println("Got a soap exception while invoking
> "+e.getMessage());
> System.exit(1);
> }
>
> if (resp.generatedFault()) {
> Fault fault = resp.getFault();
> System.out.println("Ouch, the call failed: ");
> System.out.println(" Fault Code = " +
fault.getFaultCode());
> System.out.println(" Fault String = " +
> fault.getFaultString());
> } else {
> Parameter result = resp.getReturnValue();
> if(result.getType() == Guide.class){
> Guide g = (Guide)result.getValue();
> System.out.println("The guide name is " +
g.getGuideName());
> }else{
> System.out.println("ERROR server returned a
> :"+result.getType().toString());
> System.exit(1);
> }
>
> }
>
> Serializer/Deserializer
>
> public Bean unmarshall(String inScopeEncStyle, QName elementType,
> Node src, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
> throws IllegalArgumentException
> {
> Element root = (Element)src;
> Element tempEl = DOMUtils.getFirstChildElement(root);
> Guide target;
>
> try
> {
> target =
> (Guide)Guide.class.newInstance
> ();
> }
> catch (Exception e)
> {
> throw new IllegalArgumentException("Problem instantiating bean: "
> + e.getMessage());
> }
>
> while (tempEl != null)
> {
> Bean paramBean = xjmr.unmarshall(inScopeEncStyle,
> RPCConstants.Q_ELEM_PARAMETER,
> tempEl, ctx);
> Parameter param = (Parameter)paramBean.value;
> String tagName = tempEl.getTagName();
>
>
> if (tagName.equals("name"))
> {
> target.setGuideName((java.lang.String)param.getValue());
> }
>
> tempEl = DOMUtils.getNextSiblingElement(tempEl);
> }
>
> return new Bean(Guide.class, target);
> }
>
> public void marshall(String inScopeEncStyle, Class javaType,
> Object src, Object context, Writer sink,
> NSStack nsStack, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
> throws IllegalArgumentException, IOException
> {
>
> nsStack.pushScope();
>
> SoapEncUtils.generateStructureHeader(inScopeEncStyle, javaType,
> context,
> sink, nsStack, xjmr);
>
> sink.write(StringUtils.lineSeparator);
>
> Guide src2 = (Guide)src;
> Parameter param;
>
> param = new Parameter("namme", String.class, new String
> ("Test"), null);
> xjmr.marshall(inScopeEncStyle, Parameter.class, param, null,
> sink, nsStack, ctx);
> sink.write(StringUtils.lineSeparator);
>
> sink.write("</" + context + '>');
>
> nsStack.popScope();
> }
>
>
>
>
> server gunk:
> </SHTTP/1.1 500 Internal Server Error Content-Type: text/xml;
charset=utf-8
> Content-Length: 3369 Date: Mon, 10 Jun 2002 14:24:09 GMT Server: Apache
> Tomcat/4.0.2 (HTTP/1.1 Connector) Set-Cookie:
> JSESSIONID=4F9E94EB66517ADC4DEAD0E2AE6E5966;Pa<?xml version='1.0'
> encoding='UTF-8'?> <SOAP-ENV:Envelope
> xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <SOAP-ENV:Body>
> <SOAP-ENV:Fault> <faultcode>SOAP-ENV:Server</faultcode>
> <faultstring>java.lang.NullPointerException</faultstring>
> <faultactor>/soap/servlet/rpcrouter</faultactor> <detail>
> <stackTrace>[SOAPException: faultCode=SOAP-ENV:Server;
> msg=java.lang.NullPointerException] at
> org.apache.soap.providers.RPCJavaProvider.invoke(RPCJavaProvider.java:138)
> at
>
org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.java:35
> 4) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
>
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
> FilterChain.java:247) at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicat
>
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
> va:243) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
>
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
> va:190) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
>
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
> 46) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
> org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
> at
>
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
> ) at org.ndardPipeline.invokeNext(StandardPipeline.java:566) at
>
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
> java:170) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
>
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
> ) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
> at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
>
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
> :174) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.CainerBase.java:943) at
>
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
> 1012) at
>
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107
> ) at java.lang.Thread.run(Thread.java:536) </stackTrace> </detail>
> </SOAP-ENV:Fault>
>
>
>
RE: Problems with (De)Serializers w/ Code
Posted by "Todd D. Johnson" <to...@salarinc.com>.
Hey, thanks so much for your help. I think I just needed someone to lay it
out for me. I have, however come across some questions:
What is the deal with WSDL? I noticed that the AddressBook2 sample has a
.wsdl file in the sample directory, but nothing seems to really reference
it. How do you lock an object or service to a WSDL file? Does apache soap
not really support .wsdl (and axis does?)
Again, thank you so much
Todd
-----Original Message-----
From: Scott Nichol [mailto:snicholnews@scottnichol.com]
Sent: Monday, June 10, 2002 4:53 PM
To: soap-dev@xml.apache.org
Subject: Re: Problems with (De)Serializers w/ Code
Todd,
You basically figured this out yourself:
>>>>
Another question: the only reference to the class GuideSerializer that is
made is at the client while building the call. Is this correct? Do I need
to somehow map GuideSerializer to the type Guide in the
DeploymentDescriptor???
<<<<
If, as your original message claims, Guide implements the Serializer and
Deserializer interfaces, it must be listed as the [de-]serializing class in
your
deployement descriptor, as in
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:x="urn:tickler-guide" qname="x:guide"
javaType="com.salarinc.tickler.foundation.Guide"
java2XMLClassName="com.salarinc.tickler.foundation.Guide"
xml2JavaClassName="com.salarinc.tickler.foundation.Guide"/>
It looks, however, like you have a separate class for [de-]serialization,
GuideSerializer. In that case, use
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:x="urn:tickler-guide" qname="x:guide"
javaType="com.salarinc.tickler.foundation.Guide"
java2XMLClassName="com.salarinc.tickler.foundation.GuideSerializer"
xml2JavaClassName="com.salarinc.tickler.foundation.GuideSerializer"/>
Scott Nichol
----- Original Message -----
From: "Todd D. Johnson" <to...@salarinc.com>
To: <so...@xml.apache.org>
Sent: Monday, June 10, 2002 1:30 PM
Subject: Problems with (De)Serializers w/ Code
> I have attached code samples to the bottom. I am resending bc I did not
see
> my earlier message show up on the archives. I am using the following
> environment
> java 1.4
> Tomcat 4.0.3
> Soap 2.3
> Xerces 1.4.4
>
> I have written a simple class that implements not only the class
functions,
> but the serialization and deserialization as well. I am having problems
> calling a simple function on the class that returns itself. Right now the
> class has only one member (a string) and thus the marshall and unmarshall
> functions are responsible for handling just that member. When a client
> calls the function, apache tomcat loads the constructor, calls the
function,
> but never calls the marshall function (as reported through the apache
> console). The only thing returned to the client is
>
> Fault Code = SOAP-ENV:Server
> Fault String = java.lang.NullPointerException
>
> Does anyone have any ideas? I've gotten the simple soap examples to run
> just fine. (And subsequently my code and descriptor are pretty identical)
>
> It's pretty weird because I know that the marshall/unmarshall methods are
> never being accessed by the server. The exception is being thrown at
> (RPCJavaProvider.java:138) which seems to me that it can't find a
reference
> to my (de)serializer.
>
> Another question: the only reference to the class GuideSerializer that is
> made is at the client while building the call. Is this correct? Do I
need
> to somehow map GuideSerializer to the type Guide in the
> DeploymentDescriptor???
>
> Thanks,
>
> Todd D. Johnson
>
> Implementing server class:
>
> public Guide getSampleGuide(int guideSeq){
> System.out.println("Guide.getSampleGuide called");
> setGuideName("Sample Tickler Guide");
> //g.setGuideType("DefaultGuidePublishingAgentImpl");
> System.out.println("Guide.getSampleGuide exiting");
> return this;
> }
>
> DeploymentDescriptor:
>
> <isd:service xmlns:isd="http://xml.apache.org/xml-soap/deployment"
> id="urn:tickler">
> <isd:provider type="java" scope="Request" methods="getSampleGuide">
> <isd:java class="com.salarinc.tickler.foundation.Guide"
> static="false"/>
> </isd:provider>
>
>
<isd:faultListener>org.apache.soap.server.DOMFaultListener</isd:faultListene
> r>
> <isd:mappings>
> <isd:map
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
> xmlns:x="urn:tickler-guide" qname="x:guide"
> javaType="com.salarinc.tickler.foundation.Guide"
>
> java2XMLClassName="org.apache.soap.encoding.soapenc.BeanSerializer"
>
> xml2JavaClassName="org.apache.soap.encoding.soapenc.BeanSerializer"/>
> </isd:mappings>
> </isd:service>
>
> Client code:
>
> Integer x=new Integer(7);
> Integer y=new Integer(8);
> final String urn= "urn:tickler";
>
> Vector params = new Vector();
>
> URL url = null;
> try{
> url = new URL("http://" + serverhost + ":" + serverport+
> soapservlet);
> }catch(java.net.MalformedURLException e){
> System.out.println("Error creating a url: "+e.getMessage());
> }
>
> ServiceManagerClient client = new ServiceManagerClient(url);
> try{
> String[] apps = client.list();
> System.out.println("Deployed Services at "+url.toString()+"
> are:");
> for(int i = 0; i < apps.length; i++){
> System.out.println("\t"+apps[i]);
> DeploymentDescriptor desc = client.query(apps[i]);
> System.out.println("\t\tMethods for
> "+desc.getScriptFilenameOrString()+" are:");
> String[] methods = desc.getMethods();
> for(int j = 0; j < methods.length; j++){
> System.out.println("\t\t\t"+methods[j]);
> }
> }
> }catch(SOAPException e){
> System.out.println("Could not connect to ServiceManager at
> "+url.toString()+": "+e.getMessage());
> }
>
> // Build the call.
> Call call = new Call();
> SOAPHTTPConnection shc = new SOAPHTTPConnection ();
> shc.setMaintainSession (true);
> call.setSOAPTransport(shc);
> call.setTargetObjectURI(urn);
>
> call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
>
> call.setMethodName("getSampleGuide");
>
> params.addElement(new Parameter("guideSeq" , Integer.class, new
> Integer(7), null));
>
> call.setParams(params);
> GuideSerializer ser_0 = new GuideSerializer();
> SOAPMappingRegistry smr = call.getSOAPMappingRegistry();
> smr.mapTypes("http://schemas.xmlsoap.org/soap/encoding/", new QName(
> "urn:tickler-guide", "guide"), Guide.class, ser_0, ser_0);
> call.setSOAPMappingRegistry(smr);
> Response resp = null;
> try{
> resp = call.invoke(url,"");
> }catch(org.apache.soap.SOAPException e){
> System.out.println("Got a soap exception while invoking
> "+e.getMessage());
> System.exit(1);
> }
>
> if (resp.generatedFault()) {
> Fault fault = resp.getFault();
> System.out.println("Ouch, the call failed: ");
> System.out.println(" Fault Code = " +
fault.getFaultCode());
> System.out.println(" Fault String = " +
> fault.getFaultString());
> } else {
> Parameter result = resp.getReturnValue();
> if(result.getType() == Guide.class){
> Guide g = (Guide)result.getValue();
> System.out.println("The guide name is " +
g.getGuideName());
> }else{
> System.out.println("ERROR server returned a
> :"+result.getType().toString());
> System.exit(1);
> }
>
> }
>
> Serializer/Deserializer
>
> public Bean unmarshall(String inScopeEncStyle, QName elementType,
> Node src, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
> throws IllegalArgumentException
> {
> Element root = (Element)src;
> Element tempEl = DOMUtils.getFirstChildElement(root);
> Guide target;
>
> try
> {
> target =
> (Guide)Guide.class.newInstance
> ();
> }
> catch (Exception e)
> {
> throw new IllegalArgumentException("Problem instantiating bean: "
> + e.getMessage());
> }
>
> while (tempEl != null)
> {
> Bean paramBean = xjmr.unmarshall(inScopeEncStyle,
> RPCConstants.Q_ELEM_PARAMETER,
> tempEl, ctx);
> Parameter param = (Parameter)paramBean.value;
> String tagName = tempEl.getTagName();
>
>
> if (tagName.equals("name"))
> {
> target.setGuideName((java.lang.String)param.getValue());
> }
>
> tempEl = DOMUtils.getNextSiblingElement(tempEl);
> }
>
> return new Bean(Guide.class, target);
> }
>
> public void marshall(String inScopeEncStyle, Class javaType,
> Object src, Object context, Writer sink,
> NSStack nsStack, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
> throws IllegalArgumentException, IOException
> {
>
> nsStack.pushScope();
>
> SoapEncUtils.generateStructureHeader(inScopeEncStyle, javaType,
> context,
> sink, nsStack, xjmr);
>
> sink.write(StringUtils.lineSeparator);
>
> Guide src2 = (Guide)src;
> Parameter param;
>
> param = new Parameter("namme", String.class, new String
> ("Test"), null);
> xjmr.marshall(inScopeEncStyle, Parameter.class, param, null,
> sink, nsStack, ctx);
> sink.write(StringUtils.lineSeparator);
>
> sink.write("</" + context + '>');
>
> nsStack.popScope();
> }
>
>
>
>
> server gunk:
> </SHTTP/1.1 500 Internal Server Error Content-Type: text/xml;
charset=utf-8
> Content-Length: 3369 Date: Mon, 10 Jun 2002 14:24:09 GMT Server: Apache
> Tomcat/4.0.2 (HTTP/1.1 Connector) Set-Cookie:
> JSESSIONID=4F9E94EB66517ADC4DEAD0E2AE6E5966;Pa<?xml version='1.0'
> encoding='UTF-8'?> <SOAP-ENV:Envelope
> xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <SOAP-ENV:Body>
> <SOAP-ENV:Fault> <faultcode>SOAP-ENV:Server</faultcode>
> <faultstring>java.lang.NullPointerException</faultstring>
> <faultactor>/soap/servlet/rpcrouter</faultactor> <detail>
> <stackTrace>[SOAPException: faultCode=SOAP-ENV:Server;
> msg=java.lang.NullPointerException] at
> org.apache.soap.providers.RPCJavaProvider.invoke(RPCJavaProvider.java:138)
> at
>
org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.java:35
> 4) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
>
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
> FilterChain.java:247) at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicat
>
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
> va:243) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
>
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
> va:190) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
>
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
> 46) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
> org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
> at
>
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
> ) at org.ndardPipeline.invokeNext(StandardPipeline.java:566) at
>
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
> java:170) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
>
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
> ) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
> at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
>
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
> :174) at
>
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.CainerBase.java:943) at
>
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
> 1012) at
>
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107
> ) at java.lang.Thread.run(Thread.java:536) </stackTrace> </detail>
> </SOAP-ENV:Fault>
>
>
>
Re: Problems with (De)Serializers w/ Code
Posted by Scott Nichol <sn...@scottnichol.com>.
Todd,
You basically figured this out yourself:
>>>>
Another question: the only reference to the class GuideSerializer that is
made is at the client while building the call. Is this correct? Do I need
to somehow map GuideSerializer to the type Guide in the
DeploymentDescriptor???
<<<<
If, as your original message claims, Guide implements the Serializer and
Deserializer interfaces, it must be listed as the [de-]serializing class in your
deployement descriptor, as in
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:x="urn:tickler-guide" qname="x:guide"
javaType="com.salarinc.tickler.foundation.Guide"
java2XMLClassName="com.salarinc.tickler.foundation.Guide"
xml2JavaClassName="com.salarinc.tickler.foundation.Guide"/>
It looks, however, like you have a separate class for [de-]serialization,
GuideSerializer. In that case, use
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:x="urn:tickler-guide" qname="x:guide"
javaType="com.salarinc.tickler.foundation.Guide"
java2XMLClassName="com.salarinc.tickler.foundation.GuideSerializer"
xml2JavaClassName="com.salarinc.tickler.foundation.GuideSerializer"/>
Scott Nichol
----- Original Message -----
From: "Todd D. Johnson" <to...@salarinc.com>
To: <so...@xml.apache.org>
Sent: Monday, June 10, 2002 1:30 PM
Subject: Problems with (De)Serializers w/ Code
> I have attached code samples to the bottom. I am resending bc I did not see
> my earlier message show up on the archives. I am using the following
> environment
> java 1.4
> Tomcat 4.0.3
> Soap 2.3
> Xerces 1.4.4
>
> I have written a simple class that implements not only the class functions,
> but the serialization and deserialization as well. I am having problems
> calling a simple function on the class that returns itself. Right now the
> class has only one member (a string) and thus the marshall and unmarshall
> functions are responsible for handling just that member. When a client
> calls the function, apache tomcat loads the constructor, calls the function,
> but never calls the marshall function (as reported through the apache
> console). The only thing returned to the client is
>
> Fault Code = SOAP-ENV:Server
> Fault String = java.lang.NullPointerException
>
> Does anyone have any ideas? I've gotten the simple soap examples to run
> just fine. (And subsequently my code and descriptor are pretty identical)
>
> It's pretty weird because I know that the marshall/unmarshall methods are
> never being accessed by the server. The exception is being thrown at
> (RPCJavaProvider.java:138) which seems to me that it can't find a reference
> to my (de)serializer.
>
> Another question: the only reference to the class GuideSerializer that is
> made is at the client while building the call. Is this correct? Do I need
> to somehow map GuideSerializer to the type Guide in the
> DeploymentDescriptor???
>
> Thanks,
>
> Todd D. Johnson
>
> Implementing server class:
>
> public Guide getSampleGuide(int guideSeq){
> System.out.println("Guide.getSampleGuide called");
> setGuideName("Sample Tickler Guide");
> //g.setGuideType("DefaultGuidePublishingAgentImpl");
> System.out.println("Guide.getSampleGuide exiting");
> return this;
> }
>
> DeploymentDescriptor:
>
> <isd:service xmlns:isd="http://xml.apache.org/xml-soap/deployment"
> id="urn:tickler">
> <isd:provider type="java" scope="Request" methods="getSampleGuide">
> <isd:java class="com.salarinc.tickler.foundation.Guide"
> static="false"/>
> </isd:provider>
>
> <isd:faultListener>org.apache.soap.server.DOMFaultListener</isd:faultListene
> r>
> <isd:mappings>
> <isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
> xmlns:x="urn:tickler-guide" qname="x:guide"
> javaType="com.salarinc.tickler.foundation.Guide"
>
> java2XMLClassName="org.apache.soap.encoding.soapenc.BeanSerializer"
>
> xml2JavaClassName="org.apache.soap.encoding.soapenc.BeanSerializer"/>
> </isd:mappings>
> </isd:service>
>
> Client code:
>
> Integer x=new Integer(7);
> Integer y=new Integer(8);
> final String urn= "urn:tickler";
>
> Vector params = new Vector();
>
> URL url = null;
> try{
> url = new URL("http://" + serverhost + ":" + serverport+
> soapservlet);
> }catch(java.net.MalformedURLException e){
> System.out.println("Error creating a url: "+e.getMessage());
> }
>
> ServiceManagerClient client = new ServiceManagerClient(url);
> try{
> String[] apps = client.list();
> System.out.println("Deployed Services at "+url.toString()+"
> are:");
> for(int i = 0; i < apps.length; i++){
> System.out.println("\t"+apps[i]);
> DeploymentDescriptor desc = client.query(apps[i]);
> System.out.println("\t\tMethods for
> "+desc.getScriptFilenameOrString()+" are:");
> String[] methods = desc.getMethods();
> for(int j = 0; j < methods.length; j++){
> System.out.println("\t\t\t"+methods[j]);
> }
> }
> }catch(SOAPException e){
> System.out.println("Could not connect to ServiceManager at
> "+url.toString()+": "+e.getMessage());
> }
>
> // Build the call.
> Call call = new Call();
> SOAPHTTPConnection shc = new SOAPHTTPConnection ();
> shc.setMaintainSession (true);
> call.setSOAPTransport(shc);
> call.setTargetObjectURI(urn);
>
> call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
>
> call.setMethodName("getSampleGuide");
>
> params.addElement(new Parameter("guideSeq" , Integer.class, new
> Integer(7), null));
>
> call.setParams(params);
> GuideSerializer ser_0 = new GuideSerializer();
> SOAPMappingRegistry smr = call.getSOAPMappingRegistry();
> smr.mapTypes("http://schemas.xmlsoap.org/soap/encoding/", new QName(
> "urn:tickler-guide", "guide"), Guide.class, ser_0, ser_0);
> call.setSOAPMappingRegistry(smr);
> Response resp = null;
> try{
> resp = call.invoke(url,"");
> }catch(org.apache.soap.SOAPException e){
> System.out.println("Got a soap exception while invoking
> "+e.getMessage());
> System.exit(1);
> }
>
> if (resp.generatedFault()) {
> Fault fault = resp.getFault();
> System.out.println("Ouch, the call failed: ");
> System.out.println(" Fault Code = " + fault.getFaultCode());
> System.out.println(" Fault String = " +
> fault.getFaultString());
> } else {
> Parameter result = resp.getReturnValue();
> if(result.getType() == Guide.class){
> Guide g = (Guide)result.getValue();
> System.out.println("The guide name is " + g.getGuideName());
> }else{
> System.out.println("ERROR server returned a
> :"+result.getType().toString());
> System.exit(1);
> }
>
> }
>
> Serializer/Deserializer
>
> public Bean unmarshall(String inScopeEncStyle, QName elementType,
> Node src, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
> throws IllegalArgumentException
> {
> Element root = (Element)src;
> Element tempEl = DOMUtils.getFirstChildElement(root);
> Guide target;
>
> try
> {
> target =
> (Guide)Guide.class.newInstance
> ();
> }
> catch (Exception e)
> {
> throw new IllegalArgumentException("Problem instantiating bean: "
> + e.getMessage());
> }
>
> while (tempEl != null)
> {
> Bean paramBean = xjmr.unmarshall(inScopeEncStyle,
> RPCConstants.Q_ELEM_PARAMETER,
> tempEl, ctx);
> Parameter param = (Parameter)paramBean.value;
> String tagName = tempEl.getTagName();
>
>
> if (tagName.equals("name"))
> {
> target.setGuideName((java.lang.String)param.getValue());
> }
>
> tempEl = DOMUtils.getNextSiblingElement(tempEl);
> }
>
> return new Bean(Guide.class, target);
> }
>
> public void marshall(String inScopeEncStyle, Class javaType,
> Object src, Object context, Writer sink,
> NSStack nsStack, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
> throws IllegalArgumentException, IOException
> {
>
> nsStack.pushScope();
>
> SoapEncUtils.generateStructureHeader(inScopeEncStyle, javaType,
> context,
> sink, nsStack, xjmr);
>
> sink.write(StringUtils.lineSeparator);
>
> Guide src2 = (Guide)src;
> Parameter param;
>
> param = new Parameter("namme", String.class, new String
> ("Test"), null);
> xjmr.marshall(inScopeEncStyle, Parameter.class, param, null,
> sink, nsStack, ctx);
> sink.write(StringUtils.lineSeparator);
>
> sink.write("</" + context + '>');
>
> nsStack.popScope();
> }
>
>
>
>
> server gunk:
> </SHTTP/1.1 500 Internal Server Error Content-Type: text/xml; charset=utf-8
> Content-Length: 3369 Date: Mon, 10 Jun 2002 14:24:09 GMT Server: Apache
> Tomcat/4.0.2 (HTTP/1.1 Connector) Set-Cookie:
> JSESSIONID=4F9E94EB66517ADC4DEAD0E2AE6E5966;Pa<?xml version='1.0'
> encoding='UTF-8'?> <SOAP-ENV:Envelope
> xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <SOAP-ENV:Body>
> <SOAP-ENV:Fault> <faultcode>SOAP-ENV:Server</faultcode>
> <faultstring>java.lang.NullPointerException</faultstring>
> <faultactor>/soap/servlet/rpcrouter</faultactor> <detail>
> <stackTrace>[SOAPException: faultCode=SOAP-ENV:Server;
> msg=java.lang.NullPointerException] at
> org.apache.soap.providers.RPCJavaProvider.invoke(RPCJavaProvider.java:138)
> at
> org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.java:35
> 4) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
> FilterChain.java:247) at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicat
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
> va:243) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
> va:190) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
> org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
> 46) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at
> org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
> ) at org.ndardPipeline.invokeNext(StandardPipeline.java:566) at
> org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
> java:170) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
> ) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
> :174) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.CainerBase.java:943) at
> org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
> 1012) at
> org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107
> ) at java.lang.Thread.run(Thread.java:536) </stackTrace> </detail>
> </SOAP-ENV:Fault>
>
>
>
Re: Problems with (De)Serializers w/ Code
Posted by Scott Nichol <sn...@scottnichol.com>.
Todd,
You basically figured this out yourself:
>>>>
Another question: the only reference to the class GuideSerializer that is
made is at the client while building the call. Is this correct? Do I need
to somehow map GuideSerializer to the type Guide in the
DeploymentDescriptor???
<<<<
If, as your original message claims, Guide implements the Serializer and
Deserializer interfaces, it must be listed as the [de-]serializing class in your
deployement descriptor, as in
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:x="urn:tickler-guide" qname="x:guide"
javaType="com.salarinc.tickler.foundation.Guide"
java2XMLClassName="com.salarinc.tickler.foundation.Guide"
xml2JavaClassName="com.salarinc.tickler.foundation.Guide"/>
It looks, however, like you have a separate class for [de-]serialization,
GuideSerializer. In that case, use
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:x="urn:tickler-guide" qname="x:guide"
javaType="com.salarinc.tickler.foundation.Guide"
java2XMLClassName="com.salarinc.tickler.foundation.GuideSerializer"
xml2JavaClassName="com.salarinc.tickler.foundation.GuideSerializer"/>
Scott Nichol
----- Original Message -----
From: "Todd D. Johnson" <to...@salarinc.com>
To: <so...@xml.apache.org>
Sent: Monday, June 10, 2002 1:30 PM
Subject: Problems with (De)Serializers w/ Code
> I have attached code samples to the bottom. I am resending bc I did not see
> my earlier message show up on the archives. I am using the following
> environment
> java 1.4
> Tomcat 4.0.3
> Soap 2.3
> Xerces 1.4.4
>
> I have written a simple class that implements not only the class functions,
> but the serialization and deserialization as well. I am having problems
> calling a simple function on the class that returns itself. Right now the
> class has only one member (a string) and thus the marshall and unmarshall
> functions are responsible for handling just that member. When a client
> calls the function, apache tomcat loads the constructor, calls the function,
> but never calls the marshall function (as reported through the apache
> console). The only thing returned to the client is
>
> Fault Code = SOAP-ENV:Server
> Fault String = java.lang.NullPointerException
>
> Does anyone have any ideas? I've gotten the simple soap examples to run
> just fine. (And subsequently my code and descriptor are pretty identical)
>
> It's pretty weird because I know that the marshall/unmarshall methods are
> never being accessed by the server. The exception is being thrown at
> (RPCJavaProvider.java:138) which seems to me that it can't find a reference
> to my (de)serializer.
>
> Another question: the only reference to the class GuideSerializer that is
> made is at the client while building the call. Is this correct? Do I need
> to somehow map GuideSerializer to the type Guide in the
> DeploymentDescriptor???
>
> Thanks,
>
> Todd D. Johnson
>
> Implementing server class:
>
> public Guide getSampleGuide(int guideSeq){
> System.out.println("Guide.getSampleGuide called");
> setGuideName("Sample Tickler Guide");
> //g.setGuideType("DefaultGuidePublishingAgentImpl");
> System.out.println("Guide.getSampleGuide exiting");
> return this;
> }
>
> DeploymentDescriptor:
>
> <isd:service xmlns:isd="http://xml.apache.org/xml-soap/deployment"
> id="urn:tickler">
> <isd:provider type="java" scope="Request" methods="getSampleGuide">
> <isd:java class="com.salarinc.tickler.foundation.Guide"
> static="false"/>
> </isd:provider>
>
> <isd:faultListener>org.apache.soap.server.DOMFaultListener</isd:faultListene
> r>
> <isd:mappings>
> <isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
> xmlns:x="urn:tickler-guide" qname="x:guide"
> javaType="com.salarinc.tickler.foundation.Guide"
>
> java2XMLClassName="org.apache.soap.encoding.soapenc.BeanSerializer"
>
> xml2JavaClassName="org.apache.soap.encoding.soapenc.BeanSerializer"/>
> </isd:mappings>
> </isd:service>
>
> Client code:
>
> Integer x=new Integer(7);
> Integer y=new Integer(8);
> final String urn= "urn:tickler";
>
> Vector params = new Vector();
>
> URL url = null;
> try{
> url = new URL("http://" + serverhost + ":" + serverport+
> soapservlet);
> }catch(java.net.MalformedURLException e){
> System.out.println("Error creating a url: "+e.getMessage());
> }
>
> ServiceManagerClient client = new ServiceManagerClient(url);
> try{
> String[] apps = client.list();
> System.out.println("Deployed Services at "+url.toString()+"
> are:");
> for(int i = 0; i < apps.length; i++){
> System.out.println("\t"+apps[i]);
> DeploymentDescriptor desc = client.query(apps[i]);
> System.out.println("\t\tMethods for
> "+desc.getScriptFilenameOrString()+" are:");
> String[] methods = desc.getMethods();
> for(int j = 0; j < methods.length; j++){
> System.out.println("\t\t\t"+methods[j]);
> }
> }
> }catch(SOAPException e){
> System.out.println("Could not connect to ServiceManager at
> "+url.toString()+": "+e.getMessage());
> }
>
> // Build the call.
> Call call = new Call();
> SOAPHTTPConnection shc = new SOAPHTTPConnection ();
> shc.setMaintainSession (true);
> call.setSOAPTransport(shc);
> call.setTargetObjectURI(urn);
>
> call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
>
> call.setMethodName("getSampleGuide");
>
> params.addElement(new Parameter("guideSeq" , Integer.class, new
> Integer(7), null));
>
> call.setParams(params);
> GuideSerializer ser_0 = new GuideSerializer();
> SOAPMappingRegistry smr = call.getSOAPMappingRegistry();
> smr.mapTypes("http://schemas.xmlsoap.org/soap/encoding/", new QName(
> "urn:tickler-guide", "guide"), Guide.class, ser_0, ser_0);
> call.setSOAPMappingRegistry(smr);
> Response resp = null;
> try{
> resp = call.invoke(url,"");
> }catch(org.apache.soap.SOAPException e){
> System.out.println("Got a soap exception while invoking
> "+e.getMessage());
> System.exit(1);
> }
>
> if (resp.generatedFault()) {
> Fault fault = resp.getFault();
> System.out.println("Ouch, the call failed: ");
> System.out.println(" Fault Code = " + fault.getFaultCode());
> System.out.println(" Fault String = " +
> fault.getFaultString());
> } else {
> Parameter result = resp.getReturnValue();
> if(result.getType() == Guide.class){
> Guide g = (Guide)result.getValue();
> System.out.println("The guide name is " + g.getGuideName());
> }else{
> System.out.println("ERROR server returned a
> :"+result.getType().toString());
> System.exit(1);
> }
>
> }
>
> Serializer/Deserializer
>
> public Bean unmarshall(String inScopeEncStyle, QName elementType,
> Node src, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
> throws IllegalArgumentException
> {
> Element root = (Element)src;
> Element tempEl = DOMUtils.getFirstChildElement(root);
> Guide target;
>
> try
> {
> target =
> (Guide)Guide.class.newInstance
> ();
> }
> catch (Exception e)
> {
> throw new IllegalArgumentException("Problem instantiating bean: "
> + e.getMessage());
> }
>
> while (tempEl != null)
> {
> Bean paramBean = xjmr.unmarshall(inScopeEncStyle,
> RPCConstants.Q_ELEM_PARAMETER,
> tempEl, ctx);
> Parameter param = (Parameter)paramBean.value;
> String tagName = tempEl.getTagName();
>
>
> if (tagName.equals("name"))
> {
> target.setGuideName((java.lang.String)param.getValue());
> }
>
> tempEl = DOMUtils.getNextSiblingElement(tempEl);
> }
>
> return new Bean(Guide.class, target);
> }
>
> public void marshall(String inScopeEncStyle, Class javaType,
> Object src, Object context, Writer sink,
> NSStack nsStack, XMLJavaMappingRegistry xjmr, SOAPContext ctx)
> throws IllegalArgumentException, IOException
> {
>
> nsStack.pushScope();
>
> SoapEncUtils.generateStructureHeader(inScopeEncStyle, javaType,
> context,
> sink, nsStack, xjmr);
>
> sink.write(StringUtils.lineSeparator);
>
> Guide src2 = (Guide)src;
> Parameter param;
>
> param = new Parameter("namme", String.class, new String
> ("Test"), null);
> xjmr.marshall(inScopeEncStyle, Parameter.class, param, null,
> sink, nsStack, ctx);
> sink.write(StringUtils.lineSeparator);
>
> sink.write("</" + context + '>');
>
> nsStack.popScope();
> }
>
>
>
>
> server gunk:
> </SHTTP/1.1 500 Internal Server Error Content-Type: text/xml; charset=utf-8
> Content-Length: 3369 Date: Mon, 10 Jun 2002 14:24:09 GMT Server: Apache
> Tomcat/4.0.2 (HTTP/1.1 Connector) Set-Cookie:
> JSESSIONID=4F9E94EB66517ADC4DEAD0E2AE6E5966;Pa<?xml version='1.0'
> encoding='UTF-8'?> <SOAP-ENV:Envelope
> xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <SOAP-ENV:Body>
> <SOAP-ENV:Fault> <faultcode>SOAP-ENV:Server</faultcode>
> <faultstring>java.lang.NullPointerException</faultstring>
> <faultactor>/soap/servlet/rpcrouter</faultactor> <detail>
> <stackTrace>[SOAPException: faultCode=SOAP-ENV:Server;
> msg=java.lang.NullPointerException] at
> org.apache.soap.providers.RPCJavaProvider.invoke(RPCJavaProvider.java:138)
> at
> org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.java:35
> 4) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
> FilterChain.java:247) at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicat
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
> va:243) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
> va:190) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
> org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
> 46) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at
> org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
> ) at org.ndardPipeline.invokeNext(StandardPipeline.java:566) at
> org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
> java:170) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
> ) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 64) at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
> :174) at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
> 66) at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.CainerBase.java:943) at
> org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
> 1012) at
> org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107
> ) at java.lang.Thread.run(Thread.java:536) </stackTrace> </detail>
> </SOAP-ENV:Fault>
>
>
>