I'm trying to invoke Amazon's Web Services using Axis (for Java) 1.3.
I've downloaded their WSDL, run WSDL2Java, and created a simple test
case. When I run the test case, I keep running into the following
exception as Axis parses the response from the server:
org.xml.sax.SAXException: Invalid element in
ca.intelliware.amazonapi.Items - IsValid
I've used a proxy tool to capture the SOAP messages going back and
forth, and based on my reading of the WSDL, the format is fine. Also,
the error message suggests that the code is working with the wrong
object type. Here's the snippet of the SOAP message that's significant:
<Items>
<Request>
<IsValid>True</IsValid>
</Request>
<Item>
...
</Item>
</Items>
I would expect, therefore, that Axis should be working with a Request
class, rather than an Items class.
I've tried some searches on this mailing list, and while there are some
similar problems reported, I haven't been able to see anything that
suggests the answer.
Here are some sanity checks I've tried:
1. The Request class looks properly created, and contains an isValid
(String) member variable and appropriate getter/setter.
2. The Items class looks properly created and does not contain an
isValid member variable (correctly, I believe).
3. The WSDL includes the following:
<xs:element name="Request">
<xs:complexType>
<xs:sequence>
<xs:element name="IsValid" type="xs:string" minOccurs="0"/>
<xs:element name="HelpRequest" type="tns:HelpRequest" minOccurs="0"/>
...
</xs:sequence>
</xs:complexType>
</xs:element>
4. I tried downloading and using Axis 1.2.1, but WSDL2Java didn't seem
to generate versions of the client bindings that'd properly compile.
5. I've tracked the Exception down to these lines in
BeanDeserializer.onStartChild(...):
if (propDesc == null) {
// No such field
throw new SAXException(
Messages.getMessage("badElem00", javaType.getName(),
localName));
}
When I set a breakpoint there in my debugger, I find that the
javaType of the BeanDeserializer is Items (not Request).
Does anyone know what might cause this?
BC
Here's my SOAP request:
<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
<soapenv:Body>
<ItemLookup
xmlns="http://webservices.amazon.com/AWSECommerceService/2005-10-13";>
<AWSAccessKeyId>$MY_ACCESS_KEY</AWSAccessKeyId>
<Shared>
<ItemId>0321278658</ItemId>
</Shared>
</ItemLookup>
</soapenv:Body>
</soapenv:Envelope>
Here's the response:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";>
<SOAP-ENV:Body>
<ItemLookupResponse
xmlns="http://webservices.amazon.com/AWSECommerceService/2005-10-13";>
<OperationRequest>
<HTTPHeaders>
<Header Name="UserAgent" Value="Axis/1.3"></Header>
</HTTPHeaders>
<RequestId>0SSYXJZE5DFVK083SPCW</RequestId>
<Arguments>
<Argument Name="Service" Value="AWSECommerceService"></Argument>
</Arguments>
<RequestProcessingTime>0.0151088237762451</RequestProcessingTime>
</OperationRequest>
<Items>
<Request>
<IsValid>True</IsValid>
</Request>
<Item>
<ASIN>0321278658</ASIN>
<DetailPageURL> ... very long url ... </DetailPageURL>
<ItemAttributes>
<Author>Kent Beck</Author>
<Author>Cynthia Andres</Author>
<ProductGroup>Book</ProductGroup>
<Title>Extreme Programming Explained : Embrace Change (2nd
Edition)</Title>
</ItemAttributes>
</Item>
</Items>
</ItemLookupResponse>
</SOAP-ENV:Body></SOAP-ENV:Envelope>
Here's my stack trace:
org.xml.sax.SAXException: Invalid element in
ca.intelliware.amazonapi.Items - IsValid
at
org.apache.axis.encoding.ser.BeanDeserializer.onStartChild(BeanDeserializer.java:258)
at
org.apache.axis.encoding.DeserializationContext.startElement(DeserializationContext.java:1035)
at
org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:165)
at
org.apache.axis.message.MessageElement.publishToHandler(MessageElement.java:1141)
at org.apache.axis.message.RPCElement.deserialize(RPCElement.java:236)
at org.apache.axis.message.RPCElement.getParams(RPCElement.java:384)
at org.apache.axis.client.Call.invoke(Call.java:2467)
at org.apache.axis.client.Call.invoke(Call.java:2366)
at org.apache.axis.client.Call.invoke(Call.java:1812)
at
ca.intelliware.amazonapi.AWSECommerceServiceBindingStub.itemLookup(AWSECommerceServiceBindingStub.java:2380)
at
ca.intelliware.amazonapi.AWSECommerceServiceTest.testAWSECommerceService(AWSECommerceServiceTest.java:21)
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 junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
And my WSDL can be found here:
http://webservices.amazon.com/AWSECommerceService/AWSECommerceService.wsdl
--
B.C. Holmes \u2625 http://www.bcholmes.org/
"Sel pa vante tèt li di li sale"
-- Haitian proverb
