Hmm... no idea. I'd start stepping through the code starting at
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter to
see what happens.
M.
Mark Slater schrieb:
On Apr 19, 2006, at 2:07 PM, Mika Göckel wrote:
I'm a little bit confused, because you mixed System.out and log.
Could it be that the first element of the List returns null, it fails
with a NPE in author.isPerson() and we don't see the System.out logs?
M.
Bloody hell. Thanks for catching that. I'm teaching a beginning
programming course this quarter (in Java), and spent all afternoon
yesterday telling students how to use System.out.println().
After fixing the logging statements, I'm finally able to see the
exception that's getting thrown. Its a NullPointerException within the
proxy for my Author object.
2006-04-19 15:11:26,734 INFO
[edu.ucsc.whisper.core.LibraryItemInfoData] - <Setting authors to:
[EMAIL PROTECTED]>
2006-04-19 15:11:26,734 INFO
[edu.ucsc.whisper.core.LibraryItemInfoData] - <author =
[EMAIL PROTECTED]>
2006-04-19 15:11:26,738 INFO
[edu.ucsc.whisper.core.LibraryItemInfoData] - <Exception while
extracting authors>
java.lang.NullPointerException
at $Proxy13.isPerson(Unknown Source)
at edu.ucsc.whisper.core.AuthorData.<init>(AuthorData.java:34)
at
edu.ucsc.whisper.core.LibraryItemInfoData.setAuthors(LibraryItemInfoData.java:273)
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:585)
at
org.codehaus.xfire.aegis.type.basic.BeanType.writeProperty(BeanType.java:223)
The method signature for isPerson() is:
public final boolean isPerson()
So that made me think that perhaps a value wasn't sent for that field,
but the SOAP message did send one (I've formatted this to make it more
readable):
<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/";
xmlns:ns4="http://rpc.whisper.ucsc.edu";
xmlns:ns5="http://core.whisper.ucsc.edu";
>
...
<in0>
<ns5:authors>
<AuthorData>
<person>true</person>
<familyName>Slater</familyName>
<firstName>Mark</firstName>
<otherNames>David</otherNames>
<username>mark</username>
</AuthorData>
</ns5:authors>
<ns5:dateCreated>2006-02-23T00:00:00-08:00</ns5:dateCreated>
<ns5:primaryKeyword>Directions</ns5:primaryKeyword>
<ns5:title>Directions</ns5:title>
<ns5:keywords>
<ns4:string>stephen</ns4:string>
<ns4:string>alameda</ns4:string>
</ns5:keywords>
</in0>
The WSDL for the service is below.
So I tried changing the type from the Author interface to the
AuthorData implementation class, and added logging statements to the
constructors and property setters. With those changes, the output I
get is:
2006-04-19 15:23:40,710 DEBUG
[org.springframework.web.servlet.handler.SimpleUrlHandlerMapping] -
<Looking up handler for [/LibraryService]>
2006-04-19 15:23:40,710 DEBUG
[org.springframework.web.servlet.DispatcherServlet] - <Testing handler
adapter
[EMAIL PROTECTED]>
2006-04-19 15:23:40,827 INFO [edu.ucsc.whisper.core.AuthorData] -
<Making new AuthorData with default Constructor>
2006-04-19 15:23:40,828 INFO
[edu.ucsc.whisper.core.LibraryItemInfoData] - <Setting authors to:
[{AuthorData: authorType=person; fullName=}]>
2006-04-19 15:23:40,828 INFO
[edu.ucsc.whisper.core.LibraryItemInfoData] - <author = {AuthorData:
authorType=person; fullName=}>
2006-04-19 15:23:40,829 INFO
[edu.ucsc.whisper.core.LibraryItemInfoData] - <authorClass = class
edu.ucsc.whisper.core.AuthorData>
2006-04-19 15:23:40,829 INFO
[edu.ucsc.whisper.core.LibraryItemInfoData] - <authorClass interfaces
= [Ljava.lang.Class;@33f21d>
2006-04-19 15:23:40,829 INFO [edu.ucsc.whisper.core.AuthorData] -
<Making new AuthorData with existing Author>
2006-04-19 15:23:40,829 INFO
[edu.ucsc.whisper.core.LibraryItemInfoData] - <authors list is now:
[{AuthorData: authorType=person; fullName=}]>
So you can see that the class is begin created, but the properties
aren't being set. I'd be willing to bet that this is the cause of the
NullPointerException when the dynamic proxy for the Author interface
is used instead of the concrete class. And it brings me back to my
question from last night: Is the AuthorData part of my message
formatted/layed out correctly, and if not, what should it look like?
Thanks,
Mark
WSDL for the types involved.
<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/";
xmlns:ns1="http://core.whisper.ucsc.edu";
xmlns:soap11="http://schemas.xmlsoap.org/soap/envelope/";
xmlns:soap12="http://www.w3.org/2003/05/soap-envelope";
xmlns:soapenc11="http://schemas.xmlsoap.org/soap/encoding/";
xmlns:soapenc12="http://www.w3.org/2003/05/soap-encoding";
xmlns:tns="http://rpc.whisper.ucsc.edu";
xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";
targetNamespace="http://rpc.whisper.ucsc.edu";>
<wsdl:types>
<xsd:schema targetNamespace="http://core.whisper.ucsc.edu";
elementFormDefault="qualified" attributeFormDefault="qualified">
<xsd:complexType name="LibraryItemInfoData">
<xsd:sequence>
<xsd:element name="UUID" type="xsd:string" minOccurs="0"
nillable="true" />
<xsd:element name="authors" type="ns1:ArrayOfAuthorData"
minOccurs="0" nillable="true" />
<xsd:element name="dateCreated" type="xsd:dateTime"
minOccurs="0" nillable="true" />
<xsd:element name="dateEntered" type="xsd:dateTime"
minOccurs="0" nillable="true" />
<xsd:element name="encoding" type="xsd:string" minOccurs="0"
nillable="true" />
<xsd:element name="keywords" type="tns:ArrayOfString"
minOccurs="0" nillable="true" />
<xsd:element name="lastModified" type="xsd:dateTime"
minOccurs="0" nillable="true" />
<xsd:element name="mimeType" type="xsd:string" minOccurs="0"
nillable="true" />
<xsd:element name="primaryKeyword" type="xsd:string"
minOccurs="0" nillable="true" />
<xsd:element name="size" type="xsd:long" minOccurs="0" />
<xsd:element name="title" type="xsd:string" minOccurs="0"
nillable="true" />
<xsd:element name="typeExtension" type="xsd:string"
minOccurs="0" nillable="true" />
<xsd:element name="username" type="xsd:string" minOccurs="0"
nillable="true" />
<xsd:element name="whisperId" type="xsd:string"
minOccurs="0" nillable="true" />
<xsd:any minOccurs="0" maxOccurs="unbounded" />
</xsd:sequence>
<xsd:anyAttribute />
</xsd:complexType>
<xsd:complexType name="ArrayOfAuthorData">
<xsd:sequence>
<xsd:element name="AuthorData" type="ns1:AuthorData"
nillable="true" minOccurs="0" maxOccurs="unbounded" />
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="AuthorData">
<xsd:sequence>
<xsd:element name="familyName" type="xsd:string"
minOccurs="0" nillable="true" />
<xsd:element name="firstName" type="xsd:string"
minOccurs="0" nillable="true" />
<xsd:element name="fullName" type="xsd:string" minOccurs="0"
nillable="true" />
<xsd:element name="organizationName" type="xsd:string"
minOccurs="0" nillable="true" />
<xsd:element name="otherNames" type="xsd:string"
minOccurs="0" nillable="true" />
<xsd:element name="person" type="xsd:boolean" minOccurs="0" />
<xsd:element name="username" type="xsd:string" minOccurs="0"
nillable="true" />
<xsd:any minOccurs="0" maxOccurs="unbounded" />
</xsd:sequence>
<xsd:anyAttribute />
</xsd:complexType>
<xsd:complexType name="ArrayOfString">
<xsd:sequence>
<xsd:element name="string" type="xsd:string" nillable="true"
minOccurs="0" maxOccurs="unbounded" />
</xsd:sequence>
</xsd:complexType>
--
cyber:con gmbh
Mika Göckel
Rathausallee 10
53757 Sankt Augustin
tel (+49)2241 / 9350 0
fax (+49)2241 / 9350 99
mob (+49) 172 / 279 2771
skype mika.goeckel
email [EMAIL PROTECTED]
