jechawke 01/08/07 06:43:17 Modified: targets/soap/faq faq_chawke.html Log: Added some new faq entries. Revision Changes Path 1.6 +24 -12 xml-site/targets/soap/faq/faq_chawke.html Index: faq_chawke.html =================================================================== RCS file: /home/cvs/xml-site/targets/soap/faq/faq_chawke.html,v retrieving revision 1.5 retrieving revision 1.6 diff -u -r1.5 -r1.6 --- faq_chawke.html 2001/07/24 12:49:33 1.5 +++ faq_chawke.html 2001/08/07 13:43:17 1.6 @@ -11,7 +11,7 @@ </HEAD> <BODY LINK="#0000ff" VLINK="#800080"> <H1>Apache-SOAP User's FAQ</H1> -This FAQ is based on the questions and answers that appear on the <a href="http://xml.apache.org/soap/mail.html";>Apache-SOAP User's Mailing List</a>.<br> It is currently maintained by <A HREF="mailto:[EMAIL PROTECTED]">Jonathan Chawke</A>, and was last modified on Tue 24-Jul-2001 01:38 GMT. +This FAQ is based on the questions and answers that appear on the <a href="http://xml.apache.org/soap/mail.html";>Apache-SOAP User's Mailing List</a>.<br> It is currently maintained by <A HREF="mailto:[EMAIL PROTECTED]">Jonathan Chawke</A>, and was last modified on Tue 07-Aug-2001 02:25 GMT. <br>Corrections and suggestions for new questions are always welcome. <H1><A NAME="toc">Table of Contents</A></H1><OL><LI><H2>Hot Topics</H2>1.1 <A HREF="#Q1_1">Help! I'm getting this error: "Element must contain a:'faultcode' element"</A><br> 1.2 <A HREF="#Q1_2">Help! I'm getting this error: "Unable to resolve namespace URI for 'xsd'".</A><br> @@ -21,6 +21,7 @@ "Fault String = java.lang.NoSuchMethodError"</A><br> 1.6 <A HREF="#Q1_6">Help! I'm getting this error: "Exception in thread "main" java.lang.NoSuchMethodError at org.apache.soap.util.xml.QName.<init>(QName.java:80)"</A><br> +1.7 <A HREF="#Q1_7">Help! I'm getting this error: "Exception in thread "main" java.lang.AbstractMethodError at org.apache.soap.util.xml.QName.<init>(QName.java:80)"</A><br> <br></LI><LI><H2>General</H2>2.1 <A HREF="#Q2_1">Where can I get help on SOAP issue XYZ?</A><br> 2.2 <A HREF="#Q2_2">Where can I find mailing list archives for the soap-user mailing list?</A><br> 2.3 <A HREF="#Q2_3">I'm just getting started with SOAP. Where can I find a tutorial on SOAP programming?</A><br> @@ -72,6 +73,7 @@ 4.13 <A HREF="#Q4_13">I'm getting an error telling me that class 'XMLParserLiason' is not found. What is wrong?</A><br> 4.14 <A HREF="#Q4_14">Help! I'm getting this error message: "Unable to retrieve PropertyDescriptor for property 'checkMustUnderstands' of class 'class org.apache.soap.server.DeploymentDescriptor'.</A><br> 4.15 <A HREF="#Q4_15">Help! I'm getting this error: "BSF Error: Unable to load language: javascript". I'm using bsf 2.2 and js.jar from rhino14R3.zip.</A><br> +4.17 <A HREF="#Q4_17">Help! I'm getting this error: "Caught SOAPException <SOAP-ENV:Client>: Error opening socket:connection refused"</A><br> 4.18 <A HREF="#Q4_18">Help! I'm getting this error when I run one of the MIME samples: "Error parsing response: javax.mail.MessagingException: Missing start boundary"</A><br> <br></LI><LI><H2>Design and Architecture Issues</H2>5.2 <A HREF="#Q5_2">Can a SOAP server maintain session between multiple client invocations?</A><br> @@ -82,9 +84,10 @@ 5.9 <A HREF="#Q5_9">How do I write a SOAP service that maintains state across a session?</A><br> 5.11 <A HREF="#Q5_11">Is it possible to perform more than one invocation in a single SOAP request?</A><br> 5.12 <A HREF="#Q5_12">I would like to write a SOAP service method that returns a DOM Document (org.w3c.dom.Document). How do I do this?</A><br> -5.14 <A HREF="#Q5_14">What is the performance difference (if any) between SOAP and RMI? Are there any benchmark test results available?</A><br> -5.15 <A HREF="#Q5_15">I am writing a SOAP service which returns a set of data. Is it better to return this data in an object, or as an XML data structure?</A><br> -5.16 <A HREF="#Q5_16">Are Apache SOAP calls synchronous or asynchronous?</A><br> +5.14 <A HREF="#Q5_14">I would like to pass a DOM Element as a parameter to a method. How do I do this?</A><br> +5.15 <A HREF="#Q5_15">What is the performance difference (if any) between SOAP and RMI? Are there any benchmark test results available?</A><br> +5.16 <A HREF="#Q5_16">I am writing a SOAP service which returns a set of data. Is it better to return this data in an object, or as an XML data structure?</A><br> +5.17 <A HREF="#Q5_17">Are Apache SOAP calls synchronous or asynchronous?</A><br> <br></LI><LI><H2>SOAP and Namespaces</H2>6.1 <A HREF="#Q6_1">What are all these SOAP Namespaces?</A><br> 6.2 <A HREF="#Q6_2">Do I need to use namespaces on my XML data?</A><br> 6.3 <A HREF="#Q6_3">What are all those namespace prefixes in my SOAP messages? Won't they keep validation from working?</A><br> @@ -99,6 +102,7 @@ 8.5 <A HREF="#Q8_5">Is there a command-line utility that I can use to generate a WSDL File?</A><br> 8.6 <A HREF="#Q8_6">Is there a command-line utility that I can use to generate WSDL stub and skeleton files?</A><br> 8.7 <A HREF="#Q8_7">Any one know is there any open source UDDI server implementation? (the UDDI4J server is locked into DB2)</A><br> +8.8 <A HREF="#Q8_8">Is there a tool that can be used to parse WSDL files?</A><br> <br></LI><LI><H2>SOAP and .NET</H2>9.1 <A HREF="#Q9_1">Does Apache SOAP work with Microsoft SOAP?</A><br> 9.4 <A HREF="#Q9_4">Help! My Apache SOAP Client cannot connect to a .NET service - the server says it expects 'text/xml' and doesn't understand "text/xml; charset=utf-8".</A><br> </OL> @@ -120,7 +124,9 @@ Ensure that:<BR>(a) You have deployed the sample service you want to use. <BR>(b) Xerces.jar is the very first entry in your classpath (set this in tomcat.bat or tomcat.sh as per the SOAP installation instructions).<BR>(c) There are no other XML parsers in your classpath. Some people have experienced this problem due to an early version of the JAXP package hiding in JAVA_HOME/jre/lib/ext.<BR>(d) The sample classes are in the server's CLASSPATH.<p> 1.6 <STRONG><A NAME="Q1_6">Help! I'm getting this error: "Exception in thread "main" java.lang.NoSuchMethodError at org.apache.soap.util.xml.QName.<init>(QName.java:80)"</A></STRONG><BR> -The most likely cause of this problem is that you have more than one xml parser library (jar) in your classpath. Finding the other xml library can be tricky. Note that the JVM looks in two places BEFORE it looks at classpath. It finds "Bootstrap" classes and "Extension" classes first. $JAVA_HOME/jre/lib/ext is where the extension classes live. <BR>People often find another XML parser hiding in JAVA_HOME\jre\lib\ext. <BR>Libraries to look for include: xml.jar, xsltc.jar. The solution is to delete these jars (or move them to a directory that isn't included in the classpath).<p> +The most likely cause of this problem is that you have more than one xml parser library (jar) in your classpath. Finding the other xml library can be tricky. Note that the JVM looks in two places BEFORE it looks at classpath. It finds "Bootstrap" classes and "Extension" classes first. $JAVA_HOME/jre/lib/ext is where the extension classes live. <BR>People often find another XML parser hiding in JAVA_HOME\jre\lib\ext. <BR>Libraries to look for include: xml.jar, xsltc.jar. The solution is to delete these jars (or move them to a directory that isn't included in the classpath).<BR>Note also that JRun users got around this problem by adding the xerces jar to the JRun classpath in <jrun>/lib/global.properties:<BR> jrun.classpath=c:/myjars/xerces.jar;..�<p> +1.7 <STRONG><A NAME="Q1_7">Help! I'm getting this error: "Exception in thread "main" java.lang.AbstractMethodError at org.apache.soap.util.xml.QName.<init>(QName.java:80)"</A></STRONG><BR> +See Question 1.6 above.<p> <p><H2><u>2. General</u></H2> @@ -165,7 +171,7 @@ 2.24 <STRONG><A NAME="Q2_24">Help! I got the following error message: "SOAP Service Manager: Unable to read 'DeployedServices.ds': assuming fresh start"</A></STRONG><BR> This message will appear the first time you run SOAP, as the file does not exist and needs to be created for the first time. Don't worry - it is just a warning, not an error.<p> 2.28 <STRONG><A NAME="Q2_28">How do I tell my Apache SOAP client to use a proxy server?</A></STRONG><BR> -Here is some sample code to do this:<BR>SOAPHTTPConnection connection = new SOAPHTTPConnection();<BR>connection.setProxyHost("proxy");<BR>connection.setProxyPort(8080);<p> +Here is some sample code to do this:<BR>SOAPHTTPConnection connection = new SOAPHTTPConnection();<BR>connection.setProxyHost("proxy");<BR>connection.setProxyPort(8080);<BR>Call call = new Call(); // prepare the service invocation<BR>call.setSOAPTransport(conn); // use the proxy<p> 2.29 <STRONG><A NAME="Q2_29">How do I perform Proxy Authentication with my Apache SOAP client?</A></STRONG><BR> See the sample code in the weather service client - it shows how to do proxy authentication. Here is some sample code too:<BR>SOAPHTTPConnection connection = new SOAPHTTPConnection();<BR>connection.setProxyHost("proxy");<BR>connection.setProxyPort(8080);<BR>setProxyUserName("username");<BR>setProxyPassword("password");<p> 2.31 <STRONG><A NAME="Q2_31">Are there any commercially ready servlet containers which will support Apache SOAP clients ?</A></STRONG><BR> @@ -192,7 +198,7 @@ 3.6 <STRONG><A NAME="Q3_6">How do I install Apache-SOAP on Bea WebLogic 6.1 beta?</A></STRONG><BR> It seems to be more or less the same process as that used for WebLogic 6.0, but there are some (new) gotchas related to JAXP. See <A HREF="http://xml.apache.org/soap/faq/faq-for-WL6.1beta.html";>http://xml.apache.org/soap/faq/faq-for-WL6.1beta.html</a> [note: when WebLogic 6.1 is released, we will merge this FAQ with the Apache SOAP install docs] and <A HREF="http://marc.theaimsgroup.com/?l=soap-user&m=99270271408539&w=2";>http://marc.theaimsgroup.com/?l=soap-user&m=99270271408539&w=2</a>.<p> 3.7 <STRONG><A NAME="Q3_7">How do I install Apache-SOAP on Resin?</A></STRONG><BR> -Under Resin 1.2.3, configure a web app to point to the soap webapp directory (i.e.<path-to-apache-soap>/webapps/soap).<p> +Under Resin 1.2.3, configure a web app to point to the soap webapp directory (i.e.<path-to-apache-soap>/webapps/soap). See also <A HREF="http://marc.theaimsgroup.com/?l=soap-user&m=99650513909887&w=2";>http://marc.theaimsgroup.com/?l=soap-user&m=99650513909887&w=2</a>.<p> 3.8 <STRONG><A NAME="Q3_8">How do I install Apache-SOAP on IBM WebSphere?</A></STRONG><BR> Apache SOAP has worked under every version of WebSphere from 1.1 to 3.02. It will work out of the box on WebSphere 3.5 with fixpak 2 applied. Wouter Cloetens has provided instructions on using Apache-SOAP with IBM Websphere v1, v2, and v3.0 on <A HREF="http://workspot.net/~zombie/soap/";>http://workspot.net/~zombie/soap/</a>. There are also instructions for WebSphere v3.5 in the Apache-SOAP distribution - see <A HREF="http://xml.apache.org/websrc/cvsweb.cgi/~checkout~/xml-soap/java/docs/install/websphere.html?rev=1.1&content-type=text/html&only_with_tag=MAIN";>http://xml.apache.org/websrc/cvsweb.cgi/~checkout~/xml-soap/java/docs/install/websphere.html?rev=1.1&content-type=text/html&only_with_tag=MAIN</a>. <BR>Be sure to check the following items: <BR>1. Explicitly set the port number that you have exposed the rpcrouter servlet on. Even if it is default(80), just mention it in the URL as <A HREF="http://aaa.bbb.ccc.ddd:port/soap/servlet/rpcrouter";>http://aaa.bbb.ccc.ddd:port/soap/servlet/rpcrouter</a>. <BR>2. Verify that xerces is at the start of your path not only by setting it in the App but also in the websphere configuration files (admin.config, setupclient.bat).<p> 3.9 <STRONG><A NAME="Q3_9">How do I install Apache-SOAP on Bluestone?</A></STRONG><BR> @@ -217,7 +223,7 @@ 4.7 <STRONG><A NAME="Q4_7">Help! I'm using Tomcat+SOAP on Linux. When I try to access the SOAP admin page, Tomcat crashes and I see this message: "HotSpot Virtual Machine Error, Unexpected Signal 11"</A></STRONG><BR> This may be related to a JDK 1.3 bug on Linux; try<BR>- Using JDK 1.2<BR>- Using the -server or -client option on the JDK 1.3 JVM<p> 4.8 <STRONG><A NAME="Q4_8">I am running the SOAP TunnelGui on Red Hat Linux 7.0. Sometimes the client hangs for the HTTP response to arrive. What's wrong?</A></STRONG><BR> -This problem is due to a combination of the JVM you are using and the glibc packages installed in 7.0. Redhat has a patch for glibc which solves this problem (as well as a ton of others).<BR>You should also make sure that the JVM is using the classic<BR>compiler each time. Do this by editing a file called jvm.cfg and<BR>making sure classic is the first available option for the VM. This file<BR>is in $JAVA_HOME/jre/lib.<p> +This problem is due to a combination of the Sun JDK you are using and the glibc packages installed in 7.0. Redhat has a patch for glibc which solves this problem (as well as a ton of others). Here is the<BR>advisory and update: <A HREF="http://www.redhat.com/support/errata/RHBA-2000-079.html";>http://www.redhat.com/support/errata/RHBA-2000-079.html</a>. <BR>You should also make sure that the JVM is using the classic<BR>compiler each time. Do this by editing a file called jvm.cfg and<BR>making sure classic is the first available option for the VM. This file<BR>is in $JAVA_HOME/jre/lib.<BR>You might also consider switching to the IBM or Blackdown JDK if you continue to have problems.<p> 4.9 <STRONG><A NAME="Q4_9">Help! I just upgraded Apache-SOAP. When I run the service manager I get the following error: "javax.servlet.ServletException: Cannot create bean of class org.apache.soap.server.ServiceManager"</A></STRONG><BR> Delete the JSP work files that were stored by your JSP server, so that they are re-generated using the new SOAP classes. In the case of tomcat, these should be in a directory that looks like this: $TOMCAT_HOME/work/localhost_8080/%2Fsoap.<p> 4.10 <STRONG><A NAME="Q4_10">Help! Apache won't integrate with IIS: it says that the message content type should be text/xml but it is read as text/xml. What do I do?</A></STRONG><BR> @@ -231,6 +237,8 @@ Try using a later version of Xerces such as 1.4 (you're probably using 1.2.* or 1.3.1) and see if the problem goes away. Also, make sure that you have removed all previous versions of Apache SOAP from your classpath.<p> 4.15 <STRONG><A NAME="Q4_15">Help! I'm getting this error: "BSF Error: Unable to load language: javascript". I'm using bsf 2.2 and js.jar from rhino14R3.zip.</A></STRONG><BR> This is a result of a code change that the Mozilla folks made which is not backward-compatible. You have two options: <BR>(a) Upgrade to Rhino 1.5. <BR>(b) Re-compile BSF against rhino14R3. The compiler will flag a line of code - remove the last parameter from the function call on this line and the problem should go away.<p> +4.17 <STRONG><A NAME="Q4_17">Help! I'm getting this error: "Caught SOAPException <SOAP-ENV:Client>: Error opening socket:connection refused"</A></STRONG><BR> +The problem is caused by one of the following:<BR>(a) Your SOAP client isn't specifying the right port in the service URL, e.g. It is using <A HREF="http://localhost:80/soap/servlet/rpcrouter";>http://localhost:80/soap/servlet/rpcrouter</a> but the SOAP service router is listening on port 8080 (i.e. <A HREF="http://localhost:8080/soap/servlet/rpcrouter";>http://localhost:8080/soap/servlet/rpcrouter</a> ). <BR>(b) Your SOAP client isn't specifying the right path in the service URL, e.g. it is using <A HREF="http://localhost:8080/rpcrouter";>http://localhost:8080/rpcrouter</a> instead of <A HREF="http://localhost:8080/soap/servlet/rpcrouter";>http://localhost:8080/soap/servlet/rpcrouter</a>. <BR>(c) Your application server/servlet container (e.g. Tomcat) isn't running. <BR>(d) If you are using Apache-SOAP in conjunction with a web server (e.g. Apache or IIS), ensure that the web server is also running.<p> 4.18 <STRONG><A NAME="Q4_18">Help! I'm getting this error when I run one of the MIME samples: "Error parsing response: javax.mail.MessagingException: Missing start boundary"</A></STRONG><BR> Ensure that you have added activation.jar and mail.jar to your classpath.<p> @@ -253,11 +261,13 @@ No. SOAP v1.1 (see <A HREF="http://www.w3.org/TR/SOAP/";>http://www.w3.org/TR/SOAP/</a>), which is what Apache SOAP implements, does not allow that.<p> 5.12 <STRONG><A NAME="Q5_12">I would like to write a SOAP service method that returns a DOM Document (org.w3c.dom.Document). How do I do this?</A></STRONG><BR> You need to return a DOM Element rather than a Document, and you need to specify the use of Literal XML encoding for the return value. The encoding style of a Call return is determined by the encoding style of the Request. DOM Elements use Literal XML encoding. For example, if a service accepts one String Parameter and returns an Element, just set the encoding style for the call to "<A HREF="http://xml.apache.org/xml-soap/literalxml"";>http://xml.apache.org/xml-soap/literalxml";</a> and the encoding style for the parameter to "<A HREF="http://schemas.xmlsoap.org/soap/encoding"";>http://schemas.xmlsoap.org/soap/encoding";</a>. Thus, part of your client code would look like:<BR>...<BR>Call call = new Call();<BR>call.setTargetObjectURI("urn:someservice");<BR>call.setMethodName("callmethod");<BR>call.setEncodingStyleURI( Constants.NS_URI_LITERAL_XML );<BR>String strparam = "joebob";<BR><BR>Vector params = new Vector();<BR>params.addElement( new Parameter( "strparam", String.class,<BR> strparam, Constants.NS_URI_SOAP_ENC ) );<BR>�<BR><BR>See the GetAllListings() method in the Addressbook sample for a more detailed example of how to control the return encoding style.<p> -5.14 <STRONG><A NAME="Q5_14">What is the performance difference (if any) between SOAP and RMI? Are there any benchmark test results available?</A></STRONG><BR> +5.14 <STRONG><A NAME="Q5_14">I would like to pass a DOM Element as a parameter to a method. How do I do this?</A></STRONG><BR> +Try: <BR> params.addElement(new Parameter("name", Element.class, root,<BR>Constants.NS_URI_LITERAL_XML) ); <BR>Where <BR>- 'name' is the name of the parameter expected by the SOAP service method.<BR>- 'root' is an object of type 'Element'.<p> +5.15 <STRONG><A NAME="Q5_15">What is the performance difference (if any) between SOAP and RMI? Are there any benchmark test results available?</A></STRONG><BR> There aren't any official benchmark test results available, but some ad hoc testing by SOAP users suggests that RMI is about 5 times faster than an unoptimized SOAP implementation. The XML parser is considered to be the bottleneck in Apache SOAP. <BR>Bear in mind that:<BR>- Apache SOAP implementations will be optimized in the future, and RMI probably won't. <BR>- The common expectation is that eventually, SOAP implementations will provide performance that is comparable to RMI.<BR>- RMI is Java only, SOAP isn't.<p> -5.15 <STRONG><A NAME="Q5_15">I am writing a SOAP service which returns a set of data. Is it better to return this data in an object, or as an XML data structure?</A></STRONG><BR> +5.16 <STRONG><A NAME="Q5_16">I am writing a SOAP service which returns a set of data. Is it better to return this data in an object, or as an XML data structure?</A></STRONG><BR> If the clients consuming the SOAP service are all written in Java, then it is probably easier to return objects. Otherwise you should probably return your data as XML (i.e. as DOM Elements).<p> -5.16 <STRONG><A NAME="Q5_16">Are Apache SOAP calls synchronous or asynchronous?</A></STRONG><BR> +5.17 <STRONG><A NAME="Q5_17">Are Apache SOAP calls synchronous or asynchronous?</A></STRONG><BR> If you're using the HTTP transport then the calls are synchronous. If you're using the SMTP transport then calls are asynchronous. A number of people have discussed the need to provide one-way calls over HTTP - see <A HREF="http://marc.theaimsgroup.com/?l=soap-user&w=2&r=1&s=one-way&q=b";>http://marc.theaimsgroup.com/?l=soap-user&w=2&r=1&s=one-way&q=b</a>.<p> @@ -291,11 +301,13 @@ 8.4 <STRONG><A NAME="Q8_4">Is there a tool that can validate WSDL?</A></STRONG><BR> Yes: Simon Fell has written a Schematron-based validator for SOAP oriented WSDL documents. See here: <A HREF="http://www.pocketsoap.com/wsdl/";>http://www.pocketsoap.com/wsdl/</a>. Note that the current version only checks the relationships between the various parts of the WSDL, it doesn't really check anything in the schema sections yet. A couple of folks on the schematron mailing list are working on some XSD checking code, and it will be added to the validator when its done.<p> 8.5 <STRONG><A NAME="Q8_5">Is there a command-line utility that I can use to generate a WSDL File?</A></STRONG><BR> -Yes - the IBM web services toolkit (WSTK) 2.3 (<A HREF="http://www.ibm.com/developerworks/webservices/";>http://www.ibm.com/developerworks/webservices/</a>) includes a utility called 'wsdlgen'. It is in WSTK_HOME/bin.<p> +Yes - the IBM web services toolkit (WSTK) 2.3 (<A HREF="http://www.ibm.com/developerworks/webservices/";>http://www.ibm.com/developerworks/webservices/</a>) includes a utility called 'wsdlgen'. It is in WSTK_HOME/bin.<BR>See also the Open Source WSDL4J project on <A HREF="http://oss.software.ibm.com/developerworks/projects/wsdl4j/";>http://oss.software.ibm.com/developerworks/projects/wsdl4j/</a>.<p> 8.6 <STRONG><A NAME="Q8_6">Is there a command-line utility that I can use to generate WSDL stub and skeleton files?</A></STRONG><BR> Yes - the IBM web services toolkit (<A HREF="http://www.ibm.com/developerworks/webservices/";>http://www.ibm.com/developerworks/webservices/</a>) includes a command-line java application that should do what you want: <BR>.com.ibm.wsdl.Main -?<BR>Note that:<BR>(a) It is in the wsdl.jar library.<BR>(b) Passing in '-?' (without the apostrophes) gets you a list of available commands that the class supports.<p> 8.7 <STRONG><A NAME="Q8_7">Any one know is there any open source UDDI server implementation? (the UDDI4J server is locked into DB2)</A></STRONG><BR> Have a look at the following:<BR>- Idoox WASP <A HREF="http://www.idoox.com";>http://www.idoox.com</a> (not open source, uses JDBC)<BR>- The Mind Electric GLUE <A HREF="http://www.themindelectric.com";>http://www.themindelectric.com</a> (not open source, uses JDBC)<BR>- jUUDI, on sourceforge at <A HREF="http://sourceforge.net/projects/uddi/";>http://sourceforge.net/projects/uddi/</a>. It's relatively young (i.e. the current release is an alpha), but SOAP users report that the guy running the project is very helpful, and that it looks like the code runs off whichever db platform you want. Ensure you get the code from CVS, not the (tarball) release.<BR>- pUDDIng at <A HREF="http://www.opensorcerer.org/";>http://www.opensorcerer.org/</a> (UDDI v2.0 on Oracle). The author is talking about adding support for other database platforms.<p> +8.8 <STRONG><A NAME="Q8_8">Is there a tool that can be used to parse WSDL files?</A></STRONG><BR> +Yes, IBM have one. The Web Services Description Language for Java Toolkit (WSDL4J) allows the creation, representation, and manipulation of WSDL documents describing services. See <A HREF="http://oss.software.ibm.com/developerworks/projects/wsdl4j/";>http://oss.software.ibm.com/developerworks/projects/wsdl4j/</a>.<p> <p><H2><u>9. SOAP and .NET</u></H2>
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