Guidelines for Web Service Usage

Hi,
I am being given a web services project from tomorrow in my company.My organization has given me a sample user requirement and i have to fulfill it.
I have never interacted with webservices though i am quite fluent with java.I would appreciate if someone would give some links,tutorial where i could do step by step development to develop a web service using wsdl.
Thank you for your consideration.

You could look at w3schools.com for their tutorial on web services (SOAP, WSDL etc).
I don't have a Java tutorial to recommend, but I will say this...define what you're passing into and out of the web service as XML (preferably in some sort of business XSD), and write the WSDL first. Then generate your server code from that. Don't try and take the shortcut of writing your Java and then generating your WSDL from it. Odds are you'll come up with a less flexible web service that is unwittingly tied to your implementation if you do that.

Similar Messages

Why do I get parsing errors with my WSDL URL for Web Services usage

Hi,
I am puzzled with the errors I get when I want to create a Web Service datastore.
Scenario: I have created a SAP Web Service from CRM using SOAMANAGER. The WSDL URL produced by SOAMANAGER is accessibile when pasting the URL directly in Internet Explorer. WSDL URL [http://UXCIQ0M.WDF.SAP.CORP:50076/sap/bc/srt/wsdl/srvc_CBDCB34C89C29304E10000000A4282C0/wsdl11/allinone/ws_policy/document?sap-client=504]
When using the WSDL URL in the Web Service datastore URL field, I get the error An error occurred while importing metadata: WSDLException; faultcode=PARSER_ERROR: Problem parsing: The element type "br" must be terminated by matching tag "/br". (BODI-1111469) (BODI-1112446)
When I save the WSDL defintion in a local file and use a local file path, I get the errors An error occurred while importing metadata: WSDLException (at /wsdl:definitions/wsdl:portype/wsp:Policy): faultcode=INVALID_WSDL: Encountered unexpected element 'Policy. (BODI-1111469) (BODI-1112446)
My questions:
- Why do I get different parsing errors despite the fact that the XML is the same?
- The WSDL is generated by SOAMANAGER. Shouldn't it work directly when integrating with Web Services generated from an SAP environment?
- Is this related to confiurgation issue? I have set the Job Manager to Support adapter, message broker and SNMP communication
- What is the difference between the datastore of type Adapter and the datastore Web Service? In the white paper [http://www.sdn.sap.com/irj/boc/go/portal/prtroot/docs/library/uuid/20bd5e60-11f9-2b10-2bbb-b5109cceff08?quicklink=index&overridelayout=true] it is mentioned to use the Adapter type to consume a Web Service. It is not clear to me why we have those 2 types.
Thanks & Best Regards
Isabelle

Some updates on this issue, which might help others in the community.
- Data Service doesn't support ws_policy.
- SAP NetWeaver 7.0 SOAMANAGER generate WDSL with ws_policy. In future releases, it is possible to specify not to use ws_policy
- In most cases, replacing ws_policy with standard in the URL directly, works. It doesn't work with Data Services :(.
- Replacing ALL ws_policy in the XML directly is currently the only way to have the WSDL definition being parsed properly by Data Services.

Query for web services usage within BOXI R2.

Do we need a license to use the web services provided within the BO XI R2 framework ?

With having a Business Objects XIR2 Enterprise system, you have the license to use these web services, and our other SDK's.

WEB Service usage

Hi All,
Please share with me any documents available for web service usage in TM 7.0.
Thanks,
Selvakumar M.

Hi,
you can find the documentation of available enterprise services for Transportation Management in the ES Workplace: [http://esworkplace.sap.com/socoview(bD1lbiZjPTAwMSZkPW1pbg==)/render.asp?packageid=DE0426DD9B0249F19515001A64D3F462&id=8EF5A9E0BB3B11DA2B24000F20DAC9EF|http://esworkplace.sap.com/socoview(bD1lbiZjPTAwMSZkPW1pbg==)/render.asp?packageid=DE0426DD9B0249F19515001A64D3F462&id=8EF5A9E0BB3B11DA2B24000F20DAC9EF]
Best regards, Ralf

SSL certificates and Web Services Usage inside Oracle Database Questions!

We have implemented a specific business logic using PL/SQL for our client, so we open a file and process each line of this, doing something in the Database and also call a Web Services (Service1) using UTL_HTTP package. Service1 runs in a Windows 2008 Server in the DMZ as Database server.
Service1 is already working, and we can call the service from PL/SQL without troubles.
However, according with security client's policies they requires all Web services be consumed via https including Service1, so we must to follow the procedure established for Oracle in order to enable the calling of service1 via https from the Database.
Our client's DBA and IT Team are concerned about two subjects before to continue to follow the certificate installation:
     - SSL Certificates:
1- Can installed certificates in the Database put in risk the stability of the database?
          2- Can installed certificates in the Database generate performance issues?
          3- Can installed certificates reloading the Databases?
          2- Can installed certificates in the Database generate security issues?
     - Web services:
1- Can web services calling from the Database put in risk the stability of the database?
2- Can web services calling from the Database generate performance issues?
3- Can web services calling from the Database generate security issues in the DMZ?
Could you please give us any clues, about the possible negative impact related with the SSL certificates and Web Services Usage inside Oracle Database, if it’s the case this impact exists?.
Those are the links describing the procedure mentioned above.
1 -http://www.kotti.es/2009/11/oracle-wallet/
DB: Oracle 9i.
Average number of lines in file: 300
Periodicity: Twice at day.

Thiago:
You are correct in that there should be no problem interacting with a Web service that has an HTTPS endpoint as long as you create a wallet and specify it when you make your UTL_HTTP calls, like the PayPal example.
I am not aware of a PL/SQL utility to create a XMLDsig Standard message, but if you find some Java source out there that does it, you may be able to follow a technique I used for a similar use case:
http://jastraub.blogspot.com/2009/07/hmacsha256-in-plsql.html
Regards,
Jason

Re: Why doesn't WL7.0 support get/post bindings for web services ...

hi!!!
Could you pls point to any code example.
thanks
Pushpa
"Richard Berger" <[email protected]> wrote:
>
Manoj: Thanks for the answer - do you have or can you point me at any
code samples
that accomplish this? (Yes, .NET is limited to strings/ints in their
get/post
bindings).
Thanks so much!
RB
PS - Also, can you explain any apparent discrepancy between your answer
and what
the WL documentation stated (again, it may be my misunderstanding).
"manoj cheenath" <[email protected]> wrote:
WL 7.0 does allow you to access the web service through
the browser. It even allows you to invoke service methods
with complex type arguments (.Net only supports primitive
types) and also to view the request and response soap
message for the invocation.
regards,
-manoj
"Richard Berger" <[email protected]> wrote in message
news:[email protected]...
This might be a naive question, but according to the documentation,WL 7.0
does
not support http post/get bindings for web services. Thus, for meto
access a
web service, I need to write a "middle tier" of some sort (I used
the
automatically
generated Java proxy code and JSP). All works fine, but it seems
like
it
would
sure be nice to have HTML forms access web services without havingto
write a
middle tier.
NET does this and it is extremely useful - is there a reason that
BEA
chose not
to provide this feature? (e.g. is it architecturally unsound in anyway?
or is
there an easy way to simulate it?). Given some of the Web Workshoppositioning
re: ease of use and .NET comparison, this seems like an omission.
Any insights are greatly appreciated.
Enjoy,
RB
PS - Here's the info from the documentation
Web Services Description Language (WSDL) 1.1 Specification
WSDL is an XML-based language that describes Web services. WSDL definesWeb services
as a set of endpoints operating on messages; these message containeither
message-style
or RPC-style information. The operations and messages are describedabstractly
in WSDL, and then bound to a concrete network protocol and messageformat
to define
an endpoint. Related concrete endpoints are combined into abstractendpoints (services).
WSDL is extensible to allow the description of endpoints and theirassociated
messages regardless of what message formats or network protocols areused
to communicate,
however, the only bindings described in the specification describehow to
use
WSDL in conjunction with SOAP 1.1, HTTP GET/POST, and MIME.
Note: WebLogic Server supports only SOAP 1.1 bindings.
The WSDL 1.1 Specification is available at http://www.w3.org/TR/wsdl.

This isn't a straight FORM Post as in the http binding support in WSDL. It posts
a soap message.
It's apparent that Workshop supports form-post and form-get.
But I dont see how it is done with straight WebLogic webservices. Does WebLogic
server read the web-services.xml or the WSDL file? I dont see a way to put in
http-post binding in the former and in the latter it seems to be ignored.
Can someone clarify.
Thanks.
Chu-chi
"manoj cheenath" <[email protected]> wrote:
Here is a live example:
http://65.193.192.35:7001/base/SoapInteropBaseService
Here is an example that you can download:
http://manojc.com/?sample2
This is how you run it:
http://manojc.com/?tutorial/doc/howtorun.html
More info can be found from the edocs:
7.0:
http://edocs.bea.com/wls/docs70/webserv/index.html
8.1:
http://edocs.bea.com/wls/docs81/webserv/index.html
Regards,
-manoj
http://manojc.com
"pushpa krishna" <[email protected]> wrote in message
news:[email protected]...
hi!!!
Could you pls point to any code example.
thanks
Pushpa
"Richard Berger" <[email protected]> wrote:
Manoj: Thanks for the answer - do you have or can you point me at
any
code samples
that accomplish this? (Yes, .NET is limited to strings/ints in their
get/post
bindings).
Thanks so much!
RB
PS - Also, can you explain any apparent discrepancy between your answer
and what
the WL documentation stated (again, it may be my misunderstanding).
"manoj cheenath" <[email protected]> wrote:
WL 7.0 does allow you to access the web service through
the browser. It even allows you to invoke service methods
with complex type arguments (.Net only supports primitive
types) and also to view the request and response soap
message for the invocation.
regards,
-manoj
"Richard Berger" <[email protected]> wrote in message
news:[email protected]...
This might be a naive question, but according to the documentation,WL 7.0
does
not support http post/get bindings for web services. Thus, for
me
to
access a
web service, I need to write a "middle tier" of some sort (I used
the
automatically
generated Java proxy code and JSP). All works fine, but it seems
like
it
would
sure be nice to have HTML forms access web services without havingto
write a
middle tier.
NET does this and it is extremely useful - is there a reason that
BEA
chose not
to provide this feature? (e.g. is it architecturally unsound in
any
way?
or is
there an easy way to simulate it?). Given some of the Web Workshoppositioning
re: ease of use and .NET comparison, this seems like an omission.
Any insights are greatly appreciated.
Enjoy,
RB
PS - Here's the info from the documentation
Web Services Description Language (WSDL) 1.1 Specification
WSDL is an XML-based language that describes Web services. WSDL
defines
Web services
as a set of endpoints operating on messages; these message containeither
message-style
or RPC-style information. The operations and messages are describedabstractly
in WSDL, and then bound to a concrete network protocol and messageformat
to define
an endpoint. Related concrete endpoints are combined into abstractendpoints (services).
WSDL is extensible to allow the description of endpoints and theirassociated
messages regardless of what message formats or network protocols
are
used
to communicate,
however, the only bindings described in the specification describehow to
use
WSDL in conjunction with SOAP 1.1, HTTP GET/POST, and MIME.
Note: WebLogic Server supports only SOAP 1.1 bindings.
The WSDL 1.1 Specification is available at http://www.w3.org/TR/wsdl.

Why doesn't WL7.0 support get/post bindings for web services ...

This might be a naive question, but according to the documentation, WL 7.0 does
not support http post/get bindings for web services. Thus, for me to access a
web service, I need to write a "middle tier" of some sort (I used the automatically
generated Java proxy code and JSP). All works fine, but it seems like it would
sure be nice to have HTML forms access web services without having to write a
middle tier.
.NET does this and it is extremely useful - is there a reason that BEA chose not
to provide this feature? (e.g. is it architecturally unsound in any way? or is
there an easy way to simulate it?). Given some of the Web Workshop positioning
re: ease of use and .NET comparison, this seems like an omission.
Any insights are greatly appreciated.
Enjoy,
RB
PS - Here's the info from the documentation
Web Services Description Language (WSDL) 1.1 Specification
WSDL is an XML-based language that describes Web services. WSDL defines Web services
as a set of endpoints operating on messages; these message contain either message-style
or RPC-style information. The operations and messages are described abstractly
in WSDL, and then bound to a concrete network protocol and message format to define
an endpoint. Related concrete endpoints are combined into abstract endpoints (services).
WSDL is extensible to allow the description of endpoints and their associated
messages regardless of what message formats or network protocols are used to communicate,
however, the only bindings described in the specification describe how to use
WSDL in conjunction with SOAP 1.1, HTTP GET/POST, and MIME.
Note: WebLogic Server supports only SOAP 1.1 bindings.
The WSDL 1.1 Specification is available at http://www.w3.org/TR/wsdl.

Manoj: Thanks for the answer - do you have or can you point me at any code samples
that accomplish this? (Yes, .NET is limited to strings/ints in their get/post
bindings).
Thanks so much!
RB
PS - Also, can you explain any apparent discrepancy between your answer and what
the WL documentation stated (again, it may be my misunderstanding).
"manoj cheenath" <[email protected]> wrote:
WL 7.0 does allow you to access the web service through
the browser. It even allows you to invoke service methods
with complex type arguments (.Net only supports primitive
types) and also to view the request and response soap
message for the invocation.
regards,
-manoj
"Richard Berger" <[email protected]> wrote in message
news:[email protected]...
This might be a naive question, but according to the documentation,WL 7.0
does
not support http post/get bindings for web services. Thus, for meto
access a
web service, I need to write a "middle tier" of some sort (I used theautomatically
generated Java proxy code and JSP). All works fine, but it seems likeit
would
sure be nice to have HTML forms access web services without havingto
write a
middle tier.
NET does this and it is extremely useful - is there a reason that BEAchose not
to provide this feature? (e.g. is it architecturally unsound in anyway?
or is
there an easy way to simulate it?). Given some of the Web Workshoppositioning
re: ease of use and .NET comparison, this seems like an omission.
Any insights are greatly appreciated.
Enjoy,
RB
PS - Here's the info from the documentation
Web Services Description Language (WSDL) 1.1 Specification
WSDL is an XML-based language that describes Web services. WSDL definesWeb services
as a set of endpoints operating on messages; these message containeither
message-style
or RPC-style information. The operations and messages are describedabstractly
in WSDL, and then bound to a concrete network protocol and messageformat
to define
an endpoint. Related concrete endpoints are combined into abstractendpoints (services).
WSDL is extensible to allow the description of endpoints and theirassociated
messages regardless of what message formats or network protocols areused
to communicate,
however, the only bindings described in the specification describehow to
use
WSDL in conjunction with SOAP 1.1, HTTP GET/POST, and MIME.
Note: WebLogic Server supports only SOAP 1.1 bindings.
The WSDL 1.1 Specification is available at http://www.w3.org/TR/wsdl.

WSDL error during generation of ABAP proxy for web service

Hi friends,
I am getting error during the generation of ABAP proxy object for web service developed in .NET .
Error : Proxy generation terminated: WSDL error (<extension> not supported).
How to make this WSDL file compatible for ABAP proxy.
I have tried to edit WSDL file in XML Spy but did not get any option to replace/remove the tag <extention>.
If any one worked on this. Please help me its urgent.
Thanks and regards,
Shivanand.

HI ,
I am having the same issue!!!
Does ABAP Proxy Generation support <extension> ?
Is there a list available of what is supported and what not (please consider I do not have access to sap notes)?
Thanks

Best book for Web Services

Can you suggest me what's best book for Web Services and XML to study? I'm planning to buy..
Thanks in advance..

Why does it need to be the best one? What would that even mean? Just buy something reputable, like an O'Reilly book, it's not going to be so horrifically poor that you can't learn from it

How to activate trace for web services

Hi Experts,
How to activate trace for web services in SOAMANAGER.
We are not able to view the Payload trace of the error logs.
Can anyone please let me know how to go about this???
Regards,
Ashwini

Hi Ashwini,
The thread below might be useful to you:
[SOAMANAGER - Get the XML generated;
Regards, Trevor

Building client proxies for web services with SOAP attachemtns

Hi all.
I'm currently building a series of web services that take SOAP attachments as
input, but I am unable to generate the java proxies for testing the services via
WebLogic Workshop 8.1. When I attempt to build the proxy, I get the following
error:
Warning: Failed to generate client proxy from WSDL definition for this service.
Suggestion: Please verify the <types> section of the WSDL.
Is there something I need to alter to get this to work, or does workshop not support
client proxies for web services with DataHandler parameters?
Thanks.
-Brian

Thanks for the help. This is my first web service with SOAP attachments, so it
may have been a long time till I realized that.
-Brian
"Michael Wooten" <[email protected]> wrote:
>
Thanks Brian,
The problem is that you are trying to use the "document" soap-style :-)
If you change this to "rpc", you'll should be able to successfully generate
the
client proxy jar. The soap-style property, is at the bottom of the "protocol"
property sheet section, for the JWS.
Regards,
Mike Wooten
"Brian McLoughlin" <[email protected]> wrote:
Sure, sorry about that. Attached is the wsdl for a sample web service
I created
just to test the proxy generation.
"Michael Wooten" <[email protected]> wrote:
Hi Brian,
Would it be possible for you to post the WSDL, so we can see what might
be causing
the problem?
Regards,
Mike Wooten
"Brian McLoughlin" <[email protected]> wrote:
Hi all.
I'm currently building a series of web services that take SOAP attachments
as
input, but I am unable to generate the java proxies for testing theservices
via
WebLogic Workshop 8.1. When I attempt to build the proxy, I get the
following
error:
Warning: Failed to generate client proxy from WSDL definition for
this
service.
Suggestion: Please verify the <types> section of the WSDL.
Is there something I need to alter to get this to work, or does workshop
not support
client proxies for web services with DataHandler parameters?
Thanks.
-Brian

Stub for web service in JSP

How do i embed a scriptlet inside my JSP page for the stub of my web service? is there any examples that i can refer to?
Thanks in advance. ;)

Check out the 2 How To:
9.0.4 / 10.1.2 "How to use OC4J JSP Tags for Web Services" [1].
10.1.3 (preview) "Access J2EE 1.4 JAX-RPC Java Web Services from Web Clients" [2].
Hope this helps,
Eric
[1] http://www.oracle.com/technology/sample_code/tech/java/codesnippet/webservices/wstags/index.html
[2] http://www.oracle.com/technology/products/jdev/101/howtos/jaxrpc/java14_ws_web_clients.html

About XML Parameter for Web Service invoking

I would like to use the XML parameter as the Web Service's input(Attachment is
the XML schema) in WebLogic Server 8 sp1. When I generated the Web Service and
use the WebLogic Server generate test web page to test it, I got Exception. The
WebLogic Server can't constructe the input XML.
The correct XML should look like this:
<ids>
<desc>Description</desc>
<id>1</id>
<id>2</id>
<id>3</id>
</ids>
Is there any one can tell me whether this kind of XML was permitted for Web Service
invoking or not?
[sample.xsd]

Hi Andy,
On the test page, before the invoke of the operation, did it say
something like:

if so, the service itself may be working OK, the deficiency is that the
test page tries its best to determine sample values for the invoke,
however it does not know in this case.
Did you try with a client?
Your XML should be fine.
Regards,
Bruce
Andy wrote:
>
I would like to use the XML parameter as the Web Service's input(Attachment is
the XML schema) in WebLogic Server 8 sp1. When I generated the Web Service and
use the WebLogic Server generate test web page to test it, I got Exception. The
WebLogic Server can't constructe the input XML.
The correct XML should look like this:
<ids>
<desc>Description</desc>
<id>1</id>
<id>2</id>
<id>3</id>
</ids>
Is there any one can tell me whether this kind of XML was permitted for Web Service
invoking or not?
Name: sample.xsd
sample.xsd Type: ACT Project (text/xml)
Encoding: base64

(261936172) Q general Are there seperate logs for web services?

Q<general> Are there seperate logs for web services?
A<general> It does not appear that there are any separate logs for web services.
There is knex.log file that records the errors that occur during deployment of
your .jws files. There is also the standard server log that provides information
about server status - you can write to this programmatically if you wish. There
is also the access.log file which record all the HTTP requests so this might cover
some of your web service requests that are transmitted over HTTP.

Maybe the user has deniad Access to the Runbook, check in Runbook Designer.
Seidl Michael | http://www.techguy.at |
twitter.com/techguyat | facebook.com/techguyat

Invalid Content Type Error for Web Service

Hi Experts,
We have a XI / PI Web Service, and have created an Adaptive Web Service Model for the same. For using this web service model, we have created a HTTP destination of type WSDL.
This configuration works great in our development and consolidation server.
While working with our production server, with all the settings same as consolidation server, the following error is generated for Web Service call. using the AWS model
java.io.IOException: Invalid content type while requesting http://<host>:<port>/webdynpro/resources/<application_package>/guicall.wsdl. Expected Content-type: text/xml, received Content-type: content/unknown, used user to connect: null
The HTTP destination address is the one specified in bold above.
Also, in later part of the stack trace we are bale to see this error:
com.sap.tc.webdynpro.model.webservice.exception.WSModelRuntimeException: Exception on creation of service metadata for WS metadata destination
Please guide us on this issue.
Best Regards,
Alka.

Hi Alka,
How did you configure the Webservice Destinations in Visual Admin for a webservice explosed by XI system.
I mean what was the URL specified, did you specify XI SYSTEM userid password ???
How was the webservice published to inspection.wsil in XI system ??
Thanks,
Regards,
Aditya Metukul

Guidelines for Web Service Usage

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