Presentation 10

SOAP on the Microsoft Platform (.NET)

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Outline

• You have already been introduced to SOAP, WSDL & UDDI on the JAVA platform using AXIS

• Now we will take a look at the MS . NET platforms SOAP capabilities

• Luckily – SOAP & WSDL are well standardized – so we do not need to look at these again

• Instead we will:– Show the counterpart of the AXIS project in .NET - IIS– Show the alternatives to JAVA development – using the

tools from Microsoft Visual Studio .NET

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Apache Tomcat vs. Microsoft Internet Information Server

• Apache Tomcat with AXIS & J2SE Java SDK– Works on:

• Windows, UNIX, LINUX• Open source Can be compiled to any platform (with some work)

– Server listening for events: • HTTP on port 8080 (optional)• Executes Servlets/JSP

– AXIS is an embedded project within the Tomcat environment but works with most J2EE compliant AS• Microsoft Internet Information Server with the .NET Framework SDK (ASP.NET)

– Works on:• Only Windows

– Server listening for events:• HTTP on port 80 (optional)• Executes Web resources – ASP.NET, Web services, Web forms (resulting in client side HTML )

– Tightly integrated with the Visual Studio .NET – for easy deployment & debugging

SOAP ClientJava, C++, C#,

Delphi, VB Application

SOAP ClientJava, C++, C#,

Delphi, VB Application

SOAP over HTTPSOAP over HTTP

Web ServerMS Internet Information Server

& the .NET Framework SDK(ASP.NET)

(vs. Apache Tomcat, with AXIS & J2SE SDK)

Web ServerMS Internet Information Server

& the .NET Framework SDK(ASP.NET)

(vs. Apache Tomcat, with AXIS & J2SE SDK)

Web FormsWeb Forms

WebService

WebService

C++ unman.C++

unman.

Managedcode

Managedcode

Common code base – but only MS!Common code base – but only MS!

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Web service enabling Windows

• You need to:– Install .NET Framework SDK

• Download from Microsoft (130 MB)

– Install Internet Information Server• Enabled via the Control Panel

– Visual Studio .NET• Already installed (7 or 7.1)

• More detailed instructions will follow for the LAB exercise

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Not a Windows ASP.NET course

• You will NOT be required to be an expert on .NET• You will be required to be knowledgeable about it

• ASP.NET is a framework for Web enabling Windows code

• Traditional HTML & DHTML – and Web services• Complete architecture

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Ressources for learning more

• Feel free to learn more about ASP.NET:– Getting started with the .NET framework– http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpcongettingstarte

dwithnetframework.asp

– Link can be found at the course site– Books on the subject

• Beginning .NET Web Services using C# by Joseph Bustos and Karli Watsom (WROK forlag)

• More will be listed on the course site

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Making the HelloWorld application

• Using Notepad !• Using Microsoft Visual Studio .NET• First:

– Install .NET Framework– Install IIS

• Then:– Produce code

• Manually for Notepad• Wizard for Visual Studio

– Deploy in the IIS folder • \inetpub\wwwroot\• As an .asmx file

– Test the Webservice• Using the build in functionality

– Write the Client – and all is well

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C# Notepad HelloWorld

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Deploy & Test

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Developing the Client application

• Support for using Web services in an Visual Studio application

• Stubs are automatically compiled by Visual Studio

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New Application & Add Web Reference

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Discover & bind the Web service

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Visual Studio produces a Proxy DLL

Performed by Visual Studio tool:a DLL is generated (Web Service Proxy Generator), and a header fileand a WSDL support document is madeavailable

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Write the C++ code

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Try it out

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Piece of Cake – Now C#

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C# - coding the connection

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Heterogeneous system C# to Java

Proxy DLL stubgenerated by VS

Proxy DLL skeletongenerated by AXIS

// Hello World.Java

public class HelloWorld {

public HelloWorld() { } public String getHelloWorldMessage(String name) { return "Hello World to "+name; }}

private void button1_Click(object sender, System.EventArgs e){ localhost.HelloWorldService hello = new localhost.HelloWorldService(); textBox1.Text = hello.getHelloWorldMessage("Stefan");}

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Try it with C++

• WARNING: In VS7 there seems to be a bug!– Need to manually paste the

WSDL file and compile the proxy stub DLL

– This works fine in C#– No problem in VS7.1