SOAP APIs needed to extract SOAP request arguments for message handler implementation

Question

1. I am facing problem in using the Message Handler approach for the implementation
of webservices using SOAP on BEA weblogic 8.1. A SOAP request(XML format) can
be interrupted using the message handler and hence can be modified before it invokes
the webservice method. I have been able to successfully extract the SOAP Name
space xml format as a part of the SOAP request using the APIs given below
APIs:
SOAPBody body = env.getBody();
Name Spaces format:
<m:sayHello xmlns:m="http://www.bea.com/servers/wls70/samples/examples/webservices/basic/statelessSession">
<intVal xsi:type="xsd:int">100</intVal>
<string xsi:type="xsd:string">vikas</string>
</m:sayHello>
The above is a Hello world example which invokes the sayHello method with arguments
as an integer and a string. I have not been able to find the SOAP APIs to extract
these arguments from the SOAP Body.
2. But there are XML apis which can extract the tag data from the SOAPBody e.g
NodeList nl = body.getChildNodes();
for(int i = 0; i < nl.getLength(); i++)
Node node = (Node)nl.item(i);
if(node instanceof SOAPElement){
SOAPElement se = (SOAPElement)node;
String operationName = se.getLocalName();
String value = se.getValue();
The SOAPBody interface implements the following interfaces (Ref : http://java.sun.com/j2ee/1.4/docs/api/index.html
javax.xml.soap > SOAPBody )javax.xml.soap.Node, javax.xml.soap.SOAPElement(SOAP APIs)
org.w3c.dom.Node, org.w3c.dom.Element (XML Parser APis)
3. But webservice implementation of Weblogic Application server 8.1(webservice.jar)
doesn't support the XML parser APIs and only supports the SOAP APIs.
i.e. The SOAPBody Interface of Weblogic Application Server only implements the
javax.xml.soap.Node, javax.xml.soap.SOAPElement (SOAP APIs) and not the XML APIs
(org.w3c.dom.Node, org.w3c.dom.Element)
So the code snippet written as a part of point 2 will not be compiled(give compilation
error) using the webservice.jar of Weblogic 8.1.
4. I have tried to compile the same code using the saaj-1_2-fr-api.jar (SOAP 1.2
apis jar) which I have downloaded from java.sun site. And the code got successfully
compiled.
In this latest version of SOAP APIs jar the SOAPBody interface implements both
the SOAP as well as XML parser Apis.
5. I was not able to run this code on the Weblogic server , bcoz at the runtime
weblogic 8.1 is using its webservice.jar instead of saaj-1_2-fr-api.jar. And
this code was giving me runtime error as
java.lang.NoSuchMethodError: javax.xml.soap.SOAPBody.getChildNodes()Lorg/w3c/dom/NodeList;
(see Fault Detail for stacktrace)</faultstring>
So now I need to find out the version of the webservice.jar of Weblogic 8.1 which
supports SOAP Apis as well as XML parser apis.
Otherwise I have to find out the SOAP apis which can extract the tag data from
the SOAP body.
Please Help.

Answer 1

You can use the SAAJ APIs to get the child nodes.
Example here:
http://manojc.com/tutorial/sample4/ServerHandler.java
so instead of using body.getChildNodes(), you have to use
body.getChildElements() which returns an iterator of SOAPElements.
Regards,
-manoj
http://manojc.com
"Vikas Garg" <[email protected]> wrote in message
news:40dfb5e0$1@mktnews1...
>
1. I am facing problem in using the Message Handler approach for theimplementation
of webservices using SOAP on BEA weblogic 8.1. A SOAP request(XML format)can
be interrupted using the message handler and hence can be modified beforeit invokes
the webservice method. I have been able to successfully extract the SOAPName
space xml format as a part of the SOAP request using the APIs given below
APIs:
SOAPBody body = env.getBody();
Name Spaces format:
<m:sayHelloxmlns:m="http://www.bea.com/servers/wls70/samples/examples/webservices/basic
/statelessSession">
<intVal xsi:type="xsd:int">100</intVal>
<string xsi:type="xsd:string">vikas</string>
</m:sayHello>
The above is a Hello world example which invokes the sayHello method witharguments
as an integer and a string. I have not been able to find the SOAP APIs toextract
these arguments from the SOAP Body.
2. But there are XML apis which can extract the tag data from the SOAPBodye.g
>
NodeList nl = body.getChildNodes();
for(int i = 0; i < nl.getLength(); i++)
Node node = (Node)nl.item(i);
if(node instanceof SOAPElement){
SOAPElement se = (SOAPElement)node;
String operationName = se.getLocalName();
String value = se.getValue();
The SOAPBody interface implements the following interfaces (Ref :http://java.sun.com/j2ee/1.4/docs/api/index.html
javax.xml.soap > SOAPBody )javax.xml.soap.Node, javax.xml.soap.SOAPElement(SOAP APIs)
org.w3c.dom.Node, org.w3c.dom.Element (XML Parser APis)
3. But webservice implementation of Weblogic Application server8.1(webservice.jar)
doesn't support the XML parser APIs and only supports the SOAP APIs.
i.e. The SOAPBody Interface of Weblogic Application Server only implementsthe
javax.xml.soap.Node, javax.xml.soap.SOAPElement (SOAP APIs) and not theXML APIs
(org.w3c.dom.Node, org.w3c.dom.Element)
So the code snippet written as a part of point 2 will not be compiled(givecompilation
error) using the webservice.jar of Weblogic 8.1.
4. I have tried to compile the same code using the saaj-1_2-fr-api.jar(SOAP 1.2
apis jar) which I have downloaded from java.sun site. And the code gotsuccessfully
compiled.
In this latest version of SOAP APIs jar the SOAPBody interface implementsboth
the SOAP as well as XML parser Apis.
5. I was not able to run this code on the Weblogic server , bcoz at theruntime
weblogic 8.1 is using its webservice.jar instead of saaj-1_2-fr-api.jar.And
this code was giving me runtime error as
java.lang.NoSuchMethodError:javax.xml.soap.SOAPBody.getChildNodes()Lorg/w3c/dom/NodeList;
(see Fault Detail for stacktrace)</faultstring>
So now I need to find out the version of the webservice.jar of Weblogic8.1 which
supports SOAP Apis as well as XML parser apis.
Otherwise I have to find out the SOAP apis which can extract the tag datafrom
the SOAP body.
Please Help.