Problem in calling a web service hosted on tomcat from BEA WebLogic portal

Question

Hi,
I have a wsdl file for my web service which is hosted on apache tomcat 5.5(running on port : 8080). The contents of the wsdl file are-
*<?xml version="1.0" encoding="UTF-8"?>*
*<wsdl:definitions targetNamespace="http://soa.tutorials.serg.edu" xmlns:apachesoap="http://xml.apache.org/xml-soap" xmlns:impl="http://soa.tutorials.serg.edu" xmlns:intf="http://soa.tutorials.serg.edu" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">*
*<!--WSDL created by Apache Axis version: 1.4*
Built on Apr 22, 2006 (06:55:48 PDT)-->
*<wsdl:types>*
*<schema elementFormDefault="qualified" targetNamespace="http://soa.tutorials.serg.edu" xmlns="http://www.w3.org/2001/XMLSchema">*
*<element name="getNums">*
*<complexType>*
*<sequence>*
*<element name="n" type="xsd:int"/>*
*<element name="m" type="xsd:int"/>*
*</sequence>*
*</complexType>*
*</element>*
*<element name="getNumsResponse">*
*<complexType>*
*<sequence>*
*<element maxOccurs="unbounded" name="getNumsReturn" type="xsd:int"/>*
*</sequence>*
*</complexType>*
*</element>*
*<element name="getNums2">*
*<complexType>*
*<sequence>*
*<element name="n" type="xsd:int"/>*
*<element name="m" type="xsd:int"/>*
*</sequence>*
*</complexType>*
*</element>*
*<element name="getNums2Response">*
*<complexType>*
*<sequence>*
*<element maxOccurs="unbounded" name="getNums2Return" type="xsd:int"/>*
*</sequence>*
*</complexType>*
*</element>*
*</schema>*
*</wsdl:types>*
*<wsdl:message name="getNums2Request">*
*<wsdl:part element="impl:getNums2" name="parameters"/>*
*</wsdl:message>*
*<wsdl:message name="getNumsRequest">*
*<wsdl:part element="impl:getNums" name="parameters"/>*
*</wsdl:message>*
*<wsdl:message name="getNums2Response">*
*<wsdl:part element="impl:getNums2Response" name="parameters"/>*
*</wsdl:message>*
*<wsdl:message name="getNumsResponse">*
*<wsdl:part element="impl:getNumsResponse" name="parameters"/>*
*</wsdl:message>*
*<wsdl:portType name="Echo">*
*<wsdl:operation name="getNums">*
*<wsdl:input message="impl:getNumsRequest" name="getNumsRequest"/>*
*<wsdl:output message="impl:getNumsResponse" name="getNumsResponse"/>*
*</wsdl:operation>*
*<wsdl:operation name="getNums2">*
*<wsdl:input message="impl:getNums2Request" name="getNums2Request"/>*
*<wsdl:output message="impl:getNums2Response" name="getNums2Response"/>*
*</wsdl:operation>*
*</wsdl:portType>*
*<wsdl:binding name="EchoSoapBinding" type="impl:Echo">*
*<wsdlsoap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>*
*<wsdl:operation name="getNums">*
*<wsdlsoap:operation soapAction=""/>*
*<wsdl:input name="getNumsRequest">*
*<wsdlsoap:body use="literal"/>*
*</wsdl:input>*
*<wsdl:output name="getNumsResponse">*
*<wsdlsoap:body use="literal"/>*
*</wsdl:output>*
*</wsdl:operation>*
*<wsdl:operation name="getNums2">*
*<wsdlsoap:operation soapAction=""/>*
*<wsdl:input name="getNums2Request">*
*<wsdlsoap:body use="literal"/>*
*</wsdl:input>*
*<wsdl:output name="getNums2Response">*
*<wsdlsoap:body use="literal"/>*
*</wsdl:output>*
*</wsdl:operation>*
*</wsdl:binding>*
*<wsdl:service name="EchoService">*
*<wsdl:port binding="impl:EchoSoapBinding" name="Echo">*
*<wsdlsoap:address location="http://localhost:8080/SOATest/services/Echo"/>*
*</wsdl:port>*
*</wsdl:service>*
*</wsdl:definitions>*
I created a client from the above wsdl file using ClientGen wizard in WebLogic. This client contains the follwoing classes-
Echo.java
EchoService.java
EchoService_Impl.java
Echo_Stub.java
I created a JSP portlet and the jsp content of it is-
String url = "http://localhost:8080/SOATest/services/Echo";
Echo echo = new EchoService_Impl(url).getEcho();
getNumsResponse = echo.getNums(getNums);
I tried to call that web service from BEA weblogic portal through a JSP potlet. I got an error saying -
*<An exception [javax.xml.rpc.ServiceException: Failed to parse WSDL http://localhost:8080/SOATest/services/Echo weblogic.wsee.wsdl.WsdlException: Failed to read wsdl file from url due to -- java.io.IOException: Error at Line:2, token:[OPENTAGBEGIN]All tags must be contained within a single element] was thrown while rendering the content at [TestEcho.jsp].*
*javax.servlet.ServletException: javax.xml.rpc.ServiceException: Failed to parse WSDL http://localhost:8080/SOATest/services/Echo weblogic.wsee.wsdl.WsdlException: Failed to read wsdl file from url due to -- java.io.IOException: Error at Line:2, token:[OPENTAGBEGIN]All tags must be contained within a single element*
*     at weblogic.servlet.jsp.PageContextImpl.handlePageException(PageContextImpl.java:420)*
*     at jsp_servlet.__testecho._jspService(__testecho.java:112)*
*     at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)*
*     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)*
*     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)*
*     Truncated. see log file for complete stacktrace*
*javax.xml.rpc.ServiceException: Failed to parse WSDL http://localhost:8080/SOATest/services/Echo weblogic.wsee.wsdl.WsdlException: Failed to read wsdl file from url due to -- java.io.IOException: Error at Line:2, token:[OPENTAGBEGIN]All tags must be contained within a single element*
*     at weblogic.wsee.jaxrpc.ServiceImpl.throwServiceException(ServiceImpl.java:174)*
*     at weblogic.wsee.jaxrpc.ServiceImpl.loadWsdlDefinition(ServiceImpl.java:485)*
*     at weblogic.wsee.jaxrpc.ServiceImpl.<init>(ServiceImpl.java:119)*
*     at edu.serg.tutorials.soa.EchoService_Impl.<init>(Unknown Source)*
*     at edu.serg.tutorials.soa.EchoService_Impl.<init>(Unknown Source)*
*     Truncated. see log file for complete stacktrace*
*weblogic.wsee.wsdl.WsdlException: Failed to read wsdl file from url due to -- java.io.IOException: Error at Line:2, token:[OPENTAGBEGIN]All tags must be contained within a single element*
*     at weblogic.wsee.wsdl.WsdlReader.getDocument(WsdlReader.java:313)*
*     at weblogic.wsee.wsdl.WsdlDefinitions.parse(WsdlDefinitions.java:405)*
*     at weblogic.wsee.wsdl.WsdlDefinitions.parse(WsdlDefinitions.java:391)*
*     at weblogic.wsee.wsdl.WsdlFactory.parse(WsdlFactory.java:79)*
*     at weblogic.wsee.wsdl.WsdlFactory.parse(WsdlFactory.java:66)*
*     Truncated. see log file for complete stacktrace*
*java.io.IOException: Error at Line:2, token:[OPENTAGBEGIN]All tags must be contained within a single element*
*     at weblogic.xml.domimpl.Loader.load(Loader.java:38)*
*     at weblogic.wsee.util.dom.DOMParser.getWebLogicDocumentImpl(DOMParser.java:122)*
*     at weblogic.wsee.util.dom.DOMParser.getDocument(DOMParser.java:65)*
*     at weblogic.wsee.wsdl.WsdlReader.getDocument(WsdlReader.java:311)*
*     at weblogic.wsee.wsdl.WsdlDefinitions.parse(WsdlDefinitions.java:405)*
*     Truncated. see log file for complete stacktrace*
*javax.xml.stream.XMLStreamException: Error at Line:2, token:[OPENTAGBEGIN]All tags must be contained within a single element*
*     at weblogic.xml.stax.XMLStreamReaderBase.advance(XMLStreamReaderBase.java:206)*
*     at weblogic.xml.stax.XMLStreamReaderBase.next(XMLStreamReaderBase.java:237)*
*     at weblogic.xml.domimpl.Loader.load(Loader.java:112)*
*     at weblogic.xml.domimpl.Loader.load(Loader.java:73)*
*     at weblogic.xml.domimpl.Loader.load(Loader.java:35)*
*     Truncated. see log file for complete stacktrace*
*Error at Line:2, token:[OPENTAGBEGIN]All tags must be contained within a single element*
*     at weblogic.xml.babel.baseparser.BaseParser.parseProlog(BaseParser.java:417)*
*     at weblogic.xml.babel.baseparser.BaseParser.parseSome(BaseParser.java:328)*
*     at weblogic.xml.stax.XMLStreamReaderBase.advance(XMLStreamReaderBase.java:195)*
*     at weblogic.xml.stax.XMLStreamReaderBase.next(XMLStreamReaderBase.java:237)*
*     at weblogic.xml.domimpl.Loader.load(Loader.java:112)*
*     Truncated. see log file for complete stacktrace*
My web service is using soap binding. I have tested it with eclipse and other tools also. It is working well and good. But when I tried to call a web service which is created and hosted on WebLogic server(running on port : 7001), I got the correct output.
Can anyone help me out in calling a web service hosted on different server from WebLogic server.
Thanks in advance,
Tiijnar
Edited by: user8715057 on Aug 13, 2009 1:11 AM

Answer 1

Hi
1. The way you are invoking the WebService deployed on Tomcat server is looks suspicious. It may be valid by adding extra ?wsdl etc into the url, but still I have not seen this way to invoke the webservice.
2. So you used Weblogic ant task to generate client JARs by giving this WSDL. So looks like it generated the 4 classes (.java) and in addition any other classes for Request/Response xml objects.
3. Look at the source code of EchoService.java. It should have one default empty constructor. Internally it uses the default wsdl defined in this class. You will see another constructor that takes WSDL URL as one of the parameters (QName) etc. Echo.java is the class corresponding to the Port. In the same EchoService you should see an instance method like getEcho() something like that. This Echo.java class will have methods for all the Operations defined on this Port. So the standard code snippet we use most of the times will be like this:
EchoService myEchoService = new EchoService(); // Default it uses WSDL deployed on Tomcat at localhost:8080
Echo myEchoPort = myEchoService.getEchoPort(); // Something along these lines.
myEchoPort.xxxYYY(); // NOW this is the operation name that takes the input parameters and returns outputs defined as per the WSDL defintions. If the Input and Outputs are complex xml types, it will have corresponing .JAVA files with setters and getters.
Now if this WebService is deployed on same Tomcat but on different machine or different port, you just give the full WSDL URL with that host and port in the constructor for new EchoService(...). You may need to instantiate QName object. But look at the methods generated in EchoService.java class.
The way you are using with Impl and Stubs class may also work. I am not much famiiar with this APIs apporach. Still look at the methods generated in these classes.
Also if you latest Sun JDK 1.6, it also has one command like wsimport. Infact if you install WLS 10.3 with Sun JDK, it should have C:\beawlp103\jdk160_05\bin\wsimport command. This will also generate client jar given a WSDL URL.
Thanks
Ravi Jegga