enterprise service

8/11/2019 Enterprise Service

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Copyright of Shell International Petroleum 9/9/2014 1

WEB SERVICE

VASANTH


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Copyright of Shell International Petroleum Ltd

WEB SERVICE

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To a great extent, communication between B2B and e-Commerce applications is based on manually declared interfaces, message

formats, and arrangements between business partners. Using Web services, this process can be simplified. They enable you to

combine functions in a single process, even if they are implemented in widely differing software components. Web services are

standalone, executable entities that can be published, searched for, and called, across a network.

Web service enables to:

Publish RFC-enabled function modules, BAPIs, or XI message interfaces. It can be used across the entire Internet using standard

protocols and can easily be added to any development environment. ( See Web service Provider).

Web services can be consumed regardless of where they are stored or how they are implemented. Business processes can be

implemented across several systems, either within an enterprise or across several enterprises. ( See Web service consumer)

Web service Architecture


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Lets see how to create Service provider and consumer Step by step!!!

Service provider creation

Assume already RFC enabled function module is available if not create a new function module Via SE37.

Go to transaction code SE80 with the function group name.

Right click on the function module name and select Create Enterprise Service.

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In web service creation wizard provide the service name and description and then continue.

Check the Map name to map the Function module.


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Continue with the configure Service step to generate SOAP.

Service is transportable, Package and transport number can be given in the next screen.


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Choose finish to complete the Service creation Wizard.

Activate the web service to enable the service in SOAMANAGER.

Generated XML can be seen in the WSDL tab and Security settings can be made in Configuration tab.


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Select GO button, Service definition matches the name is displayed in the search Results.

Select the row and press Apply selection

Existing services and bindings are displayed

Choose create for new bindings. A dialog box will be displayed where we need to specify the Binding name, Service name and

description.


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Choose apply settings , Configuration view is displayed where the details for the new binding get specified. You may need to scroll

down in the browser window to see this view completely

Go to provider Security tab where we can do the security settings.

The provider security settings fall into two main categories:Communication security, i.e. settings dealing with the security while the message is on the network, and

Authentication method to be used for identifying the user environment on the Web Service provider system.

Attached screen contains the minimum security settings required to call Web service.

Various options available ( HTTP or HTTPS / No authentication or User id etc.. ) in both settings. We can choose the relevant one

depends on the requirement.

Details for the each option can be obtained from the following link

http://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htm
http://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htmhttp://help.sap.com/saphelp_nw04s/helpdata/en/b0/787748cf3a4200bb1ba32a62aa8519/frameset.htm


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Save the binding

When the binding gets saved, it is displayed in the list of configurations belonging to the selected service definition. The new binding is

now accessible under its access URL by WS consumers.

To display the WSDL URL for binding select Show /Hide selected Bindings or service WSDL URL.

To consume the Web service above mentioned WSDL URL needs to be used.

Before consuming the web service , Validation on the URL can be done using the WSDL Analyzer in the Tools tab.


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Specify the URL , User id and Password.


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A web service can be consumed by a client application. Different types of client applications can consume a web service. In today?s software

environment, almost every application need a web service to enhance its functionality. The important advantage of a web service is that it returns its

results in xml format, which can be consumed by different types of clients like browser based clients, rich desktop clients, spreadsheets, wireless

devices, interactive voice response(IVR) systems and other business applications.

For a client to consume a Web service, the client must know;

Where the Web service is located

How to invoke the methods of a web service

Creating a soap message

A proxy class is a local representation (on the client computer) which perform the above tasks. So, Proxy classes serve as an intermediate step

between the web page running on the client and the actual Web service on the web server. The proxy class is created from the wsdl document by the

client application developer. In short, the Web service's WSDL document contains the information to create proxy class. The proxy class helps theclient application to use all the services provided by the web service.

The proxy class of an XML web service contains instructions for calling all the XML Web service methods. The proxy also contains code that allows

client application to interface with the SOAP runtime located on the web host. The physical representation of the proxy class is the .wsdl file.

Let see how to generate proxy class and consume the web service using SOAPUI .

Get the WSDL which is generated in the binding step of the service creation.


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